Alcator C-Mod Run 1101222 Information

Miniproposals

Miniproposal: 623

Date Filed: 11/19/2010

Title: The detection of LH waves using refelctometry

First Author: Seung Gyou Baek

Session Leader: Seung Gyou Baek (shots 1-33)

Operators
Session leader(s):	Seung Gyou Baek
Physics operator(s):	Yijun Lin
Engineering operator(s):	Bill Parkin,Ed Fitzgerald,Gary Dekow

Engineering Operator Run Comment
1101222: MP623, detection of LH waves using reflectometry PO: Y. Lin, S

Session Leader Plans

Entered: Dec 22 2010 08:02:00:300AM

Author: Seung Gyou Baek

This experiment is MP 623: The detection of LH waves using reflectometry

The objective of this experiment is to measure scattered signals (both frequency up-shifted (64.6GHz) and down-shifted (55.4GHz)) by the interaction between the 60GHz probe waves and 4.6GHz LH waves.

Working gas: D2
Standard diagnostics for LH experiments
LH launcher position: .1mm
LH start and stop time: 0.7-1.2 sec
cryopump on for density control

run plan

spectrum recorder will measure scattered signals about 10 times during 0.5sec. My plan is to average those signals to have a representative amplitude for each shot. I will detect up-shifted and down-shifted frequency component separately, in order to have maximum signal to noise ratio. Plasma parameters will be scanned in L-mode plasmas to see their effects on the amplitude of scattered signals.

measurement of up-shifted frequency (64.6GHz) component

establish USN (cryopump, reference shot=1101019014,B=5.4T, outer gap=)
+ symbol: low priority

start from high density plasma to check the power amplitude of scattered signals.
0.nl04=1.0e20 m^-2, Ip=0.8MA, n||=1.9 (0.7-0.95sec),2.1 (0.95-1.2sec), Plh=600kW

density scan (n||=1.9, 2.1)

1.nl04=0.4e20 m^-2, Ip=0.8MA, n||=1.9 (0.7-0.95sec), 2.1(0.95-1.2sec), Plh=600kW
2.nl04=0.6e20 m^-2, Ip=0.8MA, n||=1.9 (0.7-0.95sec), 2.1(0.95-1.2sec), Plh=600kW
+3.nl04=0.7e20 m^-2, Ip=0.8MA, n||=1.9 (0.7-0.95sec), 2.1(0.95-1.2sec), Plh=600kW
4.nl04=0.8e20 m^-2, Ip=0.8MA, n||=1.9 (0.7-0.95sec), 2.1(0.95-1.2sec), Plh=600kW
+5.nl04=0.9e20 m^-2, Ip=0.8MA, n||=1.9 (0.7-0.95sec), 2.1(0.95-1.2sec), Plh=600kW
6.nl04=1.0e20 m^-2, Ip=0.8MA, n||=1.9 (0.7-0.95sec), 2.1(0.95-1.2sec), Plh=600kW

density scan (n||=2.3,2.5)

7.nl04=0.5e20 m^-2, Ip=0.8MA, n||=2.3 (0.7-0.95sec), 2.5(0.95-1.2sec), Plh=600kW
8.nl04=0.6e20 m^-2, Ip=0.8MA, n||=2.3 (0.7-0.95sec), 2.5(0.95-1.2sec), Plh=600kW
+9.nl04=0.7e20 m^-2, Ip=0.8MA, n||=2.3 (0.7-0.95sec), 2.5(0.95-1.2sec), Plh=600kW
10.nl04=0.8e20 m^-2, Ip=0.8MA, n||=2.3 (0.7-0.95sec), 2.5(0.95-1.2sec), Plh=600kW
+11.nl04=0.9e20 m^-2, Ip=0.8MA, n||=2.3 (0.7-0.95sec), 2.5(0.95-1.2sec), Plh=600kW
12.nl04=1.0e20 m^-2, Ip=0.8MA, n||=2.3 (0.7-0.95sec), 2.5(0.95-1.2sec), Plh=600kW

power scan

13.nl04=0.6e20 m^-2, Ip=0.8MA, n||=1.9, Plh=200kW (0.7-0.95sec), 400kW(0.95-1.2sec)
14.nl04=0.6e20 m^-2, Ip=0.8MA, n||=1.9, Plh=600kW (0.7-0.95sec), 800kW(0.95-1.2sec)
15.nl04=0.9e20 m^-2, Ip=0.8MA, n||=1.9, Plh=200kW (0.7-0.95sec), 400kW(0.95-1.2sec)
16.nl04=0.9e20 m^-2, Ip=0.8MA, n||=1.9, Plh=600kW (0.7-0.95sec), 800kW(0.95-1.2sec)

+17.nl04=0.6e20 m^-2, Ip=0.8MA, n||=2.5, Plh=200kW (0.7-0.95sec), 400kW(0.95-1.2sec)
+18.nl04=0.6e20 m^-2, Ip=0.8MA, n||=2.5, Plh=600kW (0.7-0.95sec), 800kW(0.95-1.2sec)
+19.nl04=0.9e20 m^-2, Ip=0.8MA, n||=2.5, Plh=200kW (0.7-0.95sec), 400kW(0.95-1.2sec)
+20.nl04=0.9e20 m^-2, Ip=0.8MA, n||=2.5, Plh=600kW (0.7-0.95sec), 800kW(0.95-1.2sec)

current scan

21.nl04=0.5-1.0e20 m^-2 (0.7-1.2sec), Ip=0.4MA, n||=2.1, Plh=600kW
22.nl04=0.5-1.0e20 m^-2 (0.7-1.2sec), Ip=0.6MA, n||=2.1, Plh=600kW
23.nl04=0.5-1.0e20 m^-2 (0.7-1.2sec), Ip=0.8MA, n||=2.1, Plh=600kW
24.nl04=0.5-1.0e20 m^-2 (0.7-1.2sec), Ip=1.0MA, n||=2.1, Plh=600kW

ICRF , H-mode plasma
25.nl04=0.7e20 m^-2 when in H-mode, Ip=1.0MA, n||=2.1, Plh=600kW
26.nl04=0.8e20 m^-2 when in H-mode, Ip=1.0MA, n||=2.1, Plh=600kW
27.nl04=0.9e20 m^-2 when in H-mode, Ip=1.0MA, n||=2.1, Plh=600kW
28.nl04=1.0e20 m^-2 when in H-mode, Ip=1.0MA, n||=2.1, Plh=600kW

29. repeat with down-shifted component measurement

Physics Operators Plans

Entered: Dec 21 2010 10:49:00:127AM

Author: Yijun Lin

1101222: MP623, detection of LH waves using reflectometry

PO: Y. Lin, SL: S.G. Baek

------------------
Engineering Setup
-----------------

Run begins at 09:00 and ends at 17:00

Power systems as on: 1101221006 (5.4 T)
Acoil: +Dtop -Dbot -Jtop +Jbot (standard) Hybrid Enabled

Gas setup:

Fill B-Top with 6 psi D2 Hybrid enabled (PG4)

fill B-side lower with 4 psi Ne Hybrid DISABLED (PG1)

fill H-bottom with 1 psi Ar Hybrid enabled (PG5)

leave B-side upper as is Hybrid DISABLED (PG2)

fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3)

leave NINJA as DISABLED

Enable the following gate valves and shutters, assuming no vacuum problems:
ECE, VUV, Z-bolo, HIREX-Sr, B-spectrometer GV

Torvac gatevalve toggle (yes/no): no

Boronization: no
Overnight ECDC: yes
ICRF: YES (all transmitters, ready for run-on. They may be needed later in the run)
LH: yes
Cryopump: yes
DNB: No

overnight ECDC
Gas Setup
Gas: D2, 2.0e-4 Torr
sweep: 44/45/103 cm
scan: 20/120 s

===============================================

Session Leader Summaries

Entered: Dec 25 2010 07:30:01:613PM

Author: Seung Gyou Baek

The goal of today's experiment was to document the level of scattered signals and noise floor from the interaction between the 60GHz reflectometer probe beam and LH waves. The focus was concentrated on detect up-shifted frequency component (64.6GHz) with a plasma parameter scan mostly with USN configuration, 5.4T field. The scattered signal was started to observe for the plasma with nl04>7e19 m^-2. Below this density, it is thought to be that the noise floor is greater than the scattered signals.

shot 5,8,10,11 -density scan with n||=1.9 and 2.1
shot 13,14,15,16 - density scan with n||=1.9 and 2.3
shot 18,22,19,20,21 -power scan with Plh=200 and 500kW
shot 26,27 -current scan (.8MA and 1MA)
shot 32,33 -H-mode discharge

Physics Operator Summaries

Entered: Dec 22 2010 05:12:12:990PM

Author: Yijun Lin

PO_summary: 1101222

Last run of calendar year 2010.

Most of the SL_plan has been carried out (density scan, LH power scan, current scan, and H-mode with ICRF).

Problems:
1. H-bottom gas valve high voltage fault. (switched Argon to B-side lower from shot 10).
2. Problem with EF1L. Caused disruptions on 24, 25, and 28. See power-system entries for these shots).

Total 33 plasma attempts and got 33 plasmas.
Fizzle/dud: 0
disruption: 11 (locked mode, injection, and EF1l problem)

Session Leader Comments

Dec 22 2010 09:08:35:063AM 1101222001 Seung Gyou Baek plan: run #0

result: disruption at 0.52sec

next: repeat

Dec 22 2010 09:27:46:223AM 1101222002 Seung Gyou Baek result: LH tripped and plasma disrupted, but checked the presence of scattered signals

next: nl04=0.4 with same lh system

Dec 22 2010 09:31:56:860AM 1101222002 Seung Gyou Baek result: checked the presence of scattered signals

next: nl04=0.4 with same lh system

Dec 22 2010 09:38:52:960AM 1101222003 Seung Gyou Baek result: nl04~5e19, but ok
next: nl04=6e19 with same lh

Dec 22 2010 09:52:28:597AM 1101222004 Seung Gyou Baek result: according to Yuri, locked mode. tripping during n||=2.1,

next: try nl04=6e20 again,and lower LH power to 500kW to avoid ionization near LH grill.

Dec 22 2010 10:07:04:553AM 1101222005 Seung Gyou Baek result: density still lower than requested, several trips during n||=2.1

next: move to nl04=0.8 to incrsease the density

Dec 22 2010 10:20:56:987AM 1101222006 Seung Gyou Baek locked mode at 0.34sec and disrupted later

next: repeat with nl04=0.8

Dec 22 2010 10:36:53:813AM 1101222007 Seung Gyou Baek disrupted before lh at 0.46 sec

next: turn off the Argon, and repeat

Dec 22 2010 10:48:34:043AM 1101222008 Seung Gyou Baek nice steady nl04~7.5, spectrum recorder shows slight decrease of the noise floor, but still cannot see scattered signals.Greg informs that outer gap changes during n||=2.1 which causes tripping.

next: raise nl04~8.5

Dec 22 2010 11:07:11:717AM 1101222009 Seung Gyou Baek scattered signals appear over the noise floor. many LH trips durig n||=2.1

next: repeat except outer gap 2cm, lower Plh=500kW,

Dec 22 2010 11:25:18:917AM 1101222010 Seung Gyou Baek nl04=7.5e19, LH went smoothly.

next: increase nl04 by 1e19

Dec 22 2010 11:35:59:497AM 1101222011 Seung Gyou Baek many LH trips

next: increase outer gap to 2.5cm, repeat

Dec 22 2010 11:58:28:920AM 1101222012 Seung Gyou Baek many LH trips, but spectrum recorder shows no change in the noise floor during LH. was able to obseve several scatterd peaks.

next: nl04=0.5e20,n||=2.3 and 2.5

Dec 22 2010 12:07:01:450PM 1101222013 Seung Gyou Baek nl04~5e19,many LH trips, but spectrum recorder definitely shows high noise floor.

next: same as shot 8, n||=1.9,2.3, Plh=400kW

Dec 22 2010 12:20:03:033PM 1101222014 Seung Gyou Baek nl04~7.4e19, nice shot

next: same as shot 10 except n||=1.9, 2.3, Plh=400kW

Dec 22 2010 12:21:32:007PM 1101222014 Seung Gyou Baek nl04~7.4e19, nice shot

next: same as shot 10 except n||=1.9, 2.3, Plh=400kW

Dec 22 2010 12:35:20:560PM 1101222015 Seung Gyou Baek another good shot, nl04 slightly higher than previous shot,

next: increase nl04 slightly,same LH system

Dec 22 2010 12:54:21:837PM 1101222016 Seung Gyou Baek
good shot

next: change in LH power, same as shot #13, n||=1.9, Plh=200->400kW

Dec 22 2010 01:08:33:410PM 1101222017 Seung Gyou Baek good shot

next: same except Plh=200,600kW

Dec 22 2010 01:22:52:790PM 1101222018 Seung Gyou Baek good low density plasma

next: move to higher density, same as 14, but Plh change

Dec 22 2010 01:23:56:697PM 1101222018 Seung Gyou Baek good low density plasma

next: move to higher density, same as 14, but Plh change

Dec 22 2010 01:39:27:050PM 1101222019 Seung Gyou Baek good shot, can see the difference between 200kW and 550kW

next: raise the density same as 15

Dec 22 2010 01:55:01:383PM 1101222020 Seung Gyou Baek another good LH shot, noise floor dropped by 5dB during Plh=550kW, compared to #19

next: raise density same as 16

Dec 22 2010 02:07:43:820PM 1101222021 Seung Gyou Baek good shot,

next: repeat with nl04~6e19

Dec 22 2010 02:29:52:403PM 1101222022 Seung Gyou Baek good shot at nl04~5.7e19

next: now move to current scan with discharge #20
Ip=0.4MA

Dec 22 2010 02:37:38:093PM 1101222023 Seung Gyou Baek Ip seems to low for this density.

next: try higher current, 1MA

Dec 22 2010 02:50:56:723PM 1101222024 Seung Gyou Baek disrupted at 0.47 sec

next: repeat

Dec 22 2010 03:27:29:153PM 1101222025 Seung Gyou Baek disruption at 0.72sec

next: repeat the discharge #20

Dec 22 2010 03:37:04:397PM 1101222026 Seung Gyou Baek good shot, behaves same to #20.

next: try Ip=1MA

Dec 22 2010 04:10:57:060PM 1101222027 Seung Gyou Baek clean LH shot, do not notice the difference between shot #26 and shot #27

next: raise plasma current Ip=1.2MA

Dec 22 2010 04:13:34:193PM 1101222028 Seung Gyou Baek give up the current scan

next:
reload 1101221005 with appropriate changes (see physop)
add ICRF 2MW for 0.6-0.9sec, LH n||=2.3, 400kW for LH=0.7~1.2

Dec 22 2010 04:24:48:940PM 1101222029 Seung Gyou Baek had a brief H-mode, there is a single measurment during H-mode

next: repeat with longer ICRF pulse (0.6-1.2sec)

Dec 22 2010 04:33:08:300PM 1101222030 Seung Gyou Baek disruption at 0.75 sec

next: try again

Dec 22 2010 04:41:49:160PM 1101222030 Seung Gyou Baek disrupted

next: repeat

Dec 22 2010 04:47:12:100PM 1101222031 Seung Gyou Baek brief H-mode before LH comes
L-mode nl04~5.5e19 with 2MW ICRF during LH

next: repeat with 3MW ICRF

Dec 22 2010 05:00:23:840PM 1101222032 Seung Gyou Baek lots of H-mode, see one scattered signal during H-mode

next: raise density slightly

Dec 22 2010 05:13:58:570PM 1101222033 Seung Gyou Baek observe several scattered signals during H-mode

last shot of the year. Thank you,everybody!

Physics Operator Comments

Dec 22 2010 08:47:15:980AM 1101222001 Yijun Lin Shot 1: segment 1 from the latest cryopump startup 1101209002
PG4 gas -0.555 to -0.50 s

segment 2 from shot 1101019014 (cryopumped USN)
but change nl04 to 1.0e20 m^-2, Ip 0.8 MA,
also shorten the flat top to 1.5 sec.
(zero out pg1. It was for argon, but the bottle is Ne in today's setup,
and we don't need it)

Ask EO to change fizzle detector to 2.1 sec (for LH experiment).

program 50 ms argon (PG5 H-bottom)

Load at 22-Dec-2010 08:46:34.00
Open tree /home/ylin/pcs_scratch -1
Open tree done

Dec 22 2010 05:05:20:103PM 1101222001 Yijun Lin program: 5.4 T, 0.8 MA, 1.0e20 m^-4, USN
result: plasma. disrupted at 0.52 sec due to Locked mode

Next: slow down the density rise programing slightly.
repeat.

Dec 22 2010 09:23:52:563AM 1101222002 Yijun Lin program: 5.4 T, 0.8 MA, 1.0e20 m^-4, USN
result: plasma. disrupted at 0.8 sec due to injection. But SL got some data during LH.

Startup ok.

Next: nl04 = 0.4.

Dec 22 2010 10:01:25:060AM 1101222003 Yijun Lin program: 5.4 T, 0.8 MA, .4e20 m^-2, USN
result: plasma, full-length.

Startup ok.

Next: nl04 = 0.6

Dec 22 2010 10:01:17:130AM 1101222004 Yijun Lin program: 5.4 T, 0.8 MA, 0.6e20 m^-2, USN
result: plasma, full-length.

Startup ok. but the pre-fill 0.070 mtorr seems to be high (for all shots today).

Next: nl04 = 0.65 (to make it 0.6).
reduce pre-puff by 2 ms (-0.553 to -0.5)

Dec 22 2010 10:01:10:553AM 1101222005 Yijun Lin program: 5.4 T, 0.8 MA, 0.65e20 m^-2, USN
result: plasma, full-length.

Startup ok. pre-fill pressure did not change.
next: nl04 = 0.8
shorten pre-fill 1 ms.

Dec 22 2010 10:20:47:193AM 1101222006 Yijun Lin program: 5.4 T, 0.8 MA, 0.8e20 m^-2, USN
result: plasma, disrupted at .4 sec. (locked mode starts at 0.33 s)
Density is quite low at this time...

Startup ok.
next: repeat. (program faster density rise).

Dec 22 2010 10:37:43:597AM 1101222007 Yijun Lin program: 5.4 T, 0.8 MA, 0.8e20 m^-2, USN
result: plasma, disrupted at .48 sec. (no locked mode this time)

Startup ok.
Cannot find anything that is defintely wrong (according to Wolfe)

next: turn off Argon and see if I can avoid disruption.

Dec 22 2010 10:53:40:533AM 1101222008 Yijun Lin program: 5.4 T, 0.8 MA, 0.8e20 m^-2, USN
result: plasma, full length
Startup ok.

next: Puff argon at 0.3 sec for 20 ms. and nl04 to 0.85e20. Also increase outer gap by 2 mm.

Dec 22 2010 11:14:54:947AM 1101222009 Yijun Lin program: 5.4 T, 0.8 MA, 0.85e20 m^-2, USN
result: plasma, full length
Startup ok.

(an issue with H-bot gas valve high voltage. Decide to switch Argon to B-side-lower)
next:
1. increase outer-gap more, to 2 cm.
2. same density.
3. Pump out Ne on B-side lower, replace with 1 PSI argon, hybrid enabled.
4. Program 75 ms Argon puff from B-side-lower (PG1)

Dec 22 2010 11:21:14:620AM 1101222010 Yijun Lin program: 5.4 T, 0.8 MA, 0.85e20 m^-2, USN
result: plasma, full length
Startup ok.

(Joe and Yuri debugging H-bot gas problem...)
Switch to B-side lower for Argon successful.

Next: raise nl04 to 0.95e20 m^-2. Shorten pre-puff by 1 ms.

Dec 22 2010 11:37:29:180AM 1101222011 Yijun Lin program: 5.4 T, 0.8 MA, 0.95e20 m^-2, USN
result: plasma, full length

Startup ok.

Next: Same density. Raise outer-gap to 2.5 cm.

Dec 22 2010 11:50:47:207AM 1101222012 Yijun Lin program: 5.4 T, 0.8 MA, 0.95e20 m^-2, USN
result: plasma, full length

Startup ok.

Next:
Shorten pre-fill by 1 ms again. Raise outer-gap by 0.2 cm.
nl04 = 0.5, change LH n||

Dec 22 2010 12:01:29:770PM 1101222013 Yijun Lin program: 5.4 T, 0.8 MA, 0.5e20 m^-2, USN
result: plasma, full length

Startup ok.

Next: nl04 0.8e20. same shot 8

Dec 22 2010 12:32:50:713PM 1101222014 Yijun Lin program: 5.4 T, 0.8 MA, 0.8e20 m^-2, USN
result: plasma, full length

Late breakdown. Bz0 has been creeping up.

Next: nl04 0.85e20. same as shot 10

Change IC_EF4u from -1290 to -1295.
Shorten pre-fill by 2 ms.

Dec 22 2010 12:34:13:327PM 1101222015 Yijun Lin program: 5.4 T, 0.8 MA, 0.85e20 m^-2, USN
result: plasma, full length

breakdown ok.

Next: nl04 0.9e20. lower than shot 11 (0.95), but higher than this shot

Shorten pre-fill by 2 ms.

Dec 22 2010 12:51:29:747PM 1101222016 Yijun Lin program: 5.4 T, 0.8 MA, 0.9e20 m^-2, USN
result: plasma, full length

start up ok.

Next: nl04 to 0.5e20, same as shot 13.

Dec 22 2010 01:05:52:563PM 1101222017 Yijun Lin program: 5.4 T, 0.8 MA, 0.5e20 m^-2, USN
result: plasma, full length

start up ok.

Next: repeat. no PCS change. (different LH power)

Dec 22 2010 01:21:17:013PM 1101222018 Yijun Lin program: 5.4 T, 0.8 MA, 0.5e20 m^-2, USN
result: plasma, disrupted 1.55 sec during ramp down.

start up ok.

Next: nl04 0.8e20, same as shot 14.
no change in start-up.

Dec 22 2010 01:44:30:040PM 1101222019 Yijun Lin program: 5.4 T, 0.8 MA, 0.8e20 m^-2, USN
result: plasma, full length.

start up ok.

Next: nl05 0.85e20 m^-2, same as shot 15
(run-on transmitters 2,3,4 for ICRF for later discharges)

Dec 22 2010 01:50:57:143PM 1101222020 Yijun Lin program: 5.4 T, 0.8 MA, 0.85e20 m^-2, USN
result: plasma, full length.

start-up ok.

Next: nl04 = 0.9e20 m^-2

Dec 22 2010 02:07:14:890PM 1101222021 Yijun Lin program: 5.4 T, 0.8 MA, 0.9e20 m^-2, USN
result: plasma, full length.

start-up ok.

Next: nl04 = 0.6e20 m^-2.

Dec 22 2010 02:23:14:337PM 1101222022 Yijun Lin program: 5.4 T, 0.8 MA, 0.6e20 m^-2, USN
result: plasma, full length.

start-up ok.

Next: nl04 same as shot 20, 0.85 e20 m^-2, Ip 0.4 MA.

Dec 22 2010 02:37:36:847PM 1101222023 Yijun Lin program: 5.4 T, 0.4 MA, 0.85e20 m^-2, USN
result: plasma, disrupted at 0.97 sec (too high density for this Ip?)

start-up ok.

Next: 1.0 MA. same density.

Dec 22 2010 03:05:32:557PM 1101222024 Yijun Lin program: 5.4 T, 1.0 MA, 0.85e20 m^-2, USN
result: plasma, disrupted at 0.47 sec (PF breaker pulled. EF1L)

start-up ok.

Next: repeat.

Dec 22 2010 03:30:41:663PM 1101222025 Yijun Lin program: 5.4 T, 1.0 MA, 0.85e20 m^-2, USN
result: plasma, disrupted at 0.72 sec (PF breaker pulled, EF1L again, at 0.44 sec

Don't know why it misbehaved.

Next: reload shot 20. 0.8 MA. See if it helps.

Dec 22 2010 03:40:13:483PM 1101222026 Yijun Lin program: 5.4 T, .8 MA, 0.85e20 m^-2, USN
result: plasma, full-length
(no EF1L problem)
Next: raise current to 1.0 MA.

Dec 22 2010 03:49:25:010PM 1101222027 Yijun Lin program: 5.4 T, 1.0 MA, 0.85e20 m^-2, USN
result: plasma, disrupted at 1.5 s, at the beginning of ramp-down.

start-up ok.
next: raise current to 1.2 MA.

Dec 22 2010 04:23:13:280PM 1101222028 Yijun Lin program: 5.4 T, 1.2 MA, 0.85e20 m^-2, USN
result: plasma, disrupted at .5 s. Again EF1L problem.

start-up ok.
next:
Run H-mode
Load an LSN shot segment 2 from 1101221005 to segment 3
change current to 0.8 MA. nl04 0.6e20 m^-2
add 0.5 cm to outer gap.
Add ICRF power. To run with LH.

Turn off segment 2, turn on segment 3.

Dec 22 2010 05:02:01:380PM 1101222029 Yijun Lin program: 5.4 T, .8 MA, 0.6e20 m^-2, LSN
plasma full length.
Got H-mode.

Dec 22 2010 04:32:55:167PM 1101222030 Yijun Lin program: 5.4 T, .8 MA, 0.6e20 m^-2, lSN

Got H-mode in ICRF. disrupted at 0.74 sec due to injection.

start-up ok.

next: repeat.

Dec 22 2010 04:48:15:507PM 1101222031 Yijun Lin program: 5.4 T, .8 MA, 0.6e20 m^-2, LSN

result: plasma. full length.
Got H-mode. But not with LH.

start-up ok.

next: repeat.

Dec 22 2010 04:58:05:197PM 1101222032 Yijun Lin program: 5.4 T, .8 MA, 0.6e20 m^-2, LSN

result: plasma. full length.
Got many H-modes.

start-up ok.

next: raise nl04 to 0.9e20 m^-2. Maybe we can get EDA H-mode.

Dec 22 2010 05:11:52:393PM 1101222033 Yijun Lin program: 5.4 T, .8 MA, 0.6e20 m^-2, LSN

result: plasma. full length.
Got many H-modes.

start-up ok.

End of run.
This is the last shot of calendar year 2010.

Engineering Operator Comments

Shot Time Type Status Comment

1 09:03:11:560AM Plasma Ok

2 09:16:55:847AM Plasma Ok

3 09:30:06:240AM Plasma Ok

4 09:42:54:293AM Plasma Ok

5 09:55:51:230AM Plasma Ok

6 10:09:06:647AM Plasma Ok PF Breaker opened after plasma disruption

7 10:23:32:840AM Plasma Ok PF Breaker opened after plasma disruption

8 10:39:08:480AM Plasma Ok

9 10:53:39:587AM Plasma Ok

10 11:14:32:807AM Plasma Ok

11 11:27:43:220AM Plasma Ok

12 11:41:53:380AM Plasma Ok

13 11:57:07:260AM Plasma Ok

14 12:12:34:610PM Plasma Ok

15 12:28:02:113PM Plasma Ok

16 12:43:37:490PM Plasma Ok

17 01:00:34:030PM Plasma Ok

18 01:16:02:287PM Plasma Ok

19 01:31:49:600PM Plasma Ok

20 01:47:28:423PM Plasma Ok

21 02:03:04:307PM Plasma Ok

22 02:18:46:923PM Plasma Ok

23 02:32:19:417PM Plasma Ok

24 02:45:08:767PM Plasma Bad EF1L had problems

25 03:01:33:107PM Plasma Bad EF1L Power Supply Again

26 03:31:31:133PM Plasma Ok

27 03:44:18:770PM Plasma Ok

28 03:57:03:847PM Plasma Bad EF1L Power Supply Fault

29 04:14:47:630PM Plasma Ok

30 04:27:25:913PM Plasma Ok

31 04:40:02:530PM Plasma Ok

32 04:52:45:520PM Plasma Ok

33 05:08:15:140PM Plasma Ok

System Availability

Dec 22 2010 09:02:55:933AM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna sears,snipes
BES yes BES system is online Oct 21 2010 11:33AM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes 2pi (D+F) working. All midplane and off-midplane diode arrays working except WB1AX. Midplane foils calibrated and PRAD_MAIN is being filled. Divertor/Ledge foils not yet ready. Jul 15 2010 08:27AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization yes Nov 16 2010 02:36PM (dekow) Jim Irby Boronization dekow,irby
CNPA yes Multiple channel CNPA available Oct 21 2010 07:11PM (parker) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor no Shut down. Helium dewar removed. LN2 manual valve and solenoid valves are closed and tagged. Apr 06 2010 10:51AM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes Wide-view CXRS system is online Oct 21 2010 11:33AM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan
D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes system is aligned; new calibrations (relative brightness and position) not yet implemented Jun 29 2010 10:27AM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation yes operational, but turned off Nov 03 2009 04:59PM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 06 2007 10:50AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 06 2007 10:51AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DNB no in test mode only Nov 03 2009 05:01PM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung
ECDC yes Operational Jun 26 2010 09:28PM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE yes All channels working and calibrated. Oct 27 2010 03:41PM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauges are operational. Jun 28 2010 08:02PM (labombard) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no Plugs for Power Supply and Controls have been unplugged and red tagged making system safe for In-Vessel Access. Apr 05 2010 11:18AM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby
GPC yes Operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most channels operational. Oct 22 2010 11:46AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes operating normally Jun 29 2010 10:26AM (marmar) Earl Marmar H/D Ratio marmar
HEAT yes Jun 26 2010 11:19PM (dekow) Gary Dekow - Machine Heaters - burke,dekow
Hirex Jr yes Hirex-Jr has been installed Jun 28 2010 03:36PM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes System installed and aligned. Inverted Profiles for Ti are available upon request. Vtor profiles still under revision. Dec 17 2010 09:25AM (ypodpaly) John Rice High Resolution X-Ray ince,rice,ypodpaly
HXR yes 32 Channels operational Oct 23 2010 01:41PM (parker) Ron Parker Hard X-Ray Array faust,parker,schmidt
ICRF D-Antenna yes system checked out ok on 11006728. Jun 28 2010 04:57PM (ylin) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes system checked out ok on 1100628 Jun 28 2010 04:57PM (ylin) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes system checked out ok. conditioned to vacuum. Jun 28 2010 04:58PM (ylin) Steve Wukitch J-port antenna wukitch,ylin
Laser Blow-Off yes operational and tested Jul 20 2010 04:42PM (g) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid yes LH working. New directional couplers installed at input to each klystron. Oct 21 2010 11:42AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
Lower Hybrid Reflectometer yes 50GHz: up-, 60 GHz up- and down- Oct 21 2010 11:31AM (sgbaek) Arturo Dominguez Lower Hybrid Reflectometer dominguez,marmar,parker,sgbaek
Lower Hybrid SOL reflectometer yes differential phase (profile) working since 8/27/2010. full phase (fluctuations + profile) is not. If put on a miniproposal, please request LH launcher to be moved in Oct 05 2010 11:26AM (cornwall) Cornwall Lau Lower Hybrid SOL reflectometer cornwall,wukitch,ylin
LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha no WB4LY and LLY working but not during ICRF. WB1LY not attached due to pickup problems. LYMID attached but have profile problems. Aug 24 2010 09:17AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes Spectra being collected and tree filled. Wavelength scan is broken so fixed on the Mo XXXI and XXXII lines. Jul 15 2010 08:28AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Operational. Oct 22 2010 11:46AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Gauges are operational Jun 28 2010 08:02PM (labombard) Brian LaBombard Baratron pressure gauges labombard
MLP no System is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it. Jul 14 2009 09:20PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE no As of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB. Jun 10 2009 10:34AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes All systems are on and functional Jun 29 2010 12:56PM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes PMT Neuts_hards, ssd_x01, ssd_x02, ssd_x03 Jun 26 2010 09:21PM (irby) Jim Irby X-Ray/Neutron Detectors at K-Hor irby
NINJA no Capillaries tested in-vessel. Jun 28 2010 08:08PM (labombard) Brian LaBombard NINJA gas puff labombard,terry
PCI yes Operational. AM (2 * 39.51) MHz. Dec 13 2010 05:29PM (ntsujii) Miklos Porkolab Phase Contrast Imaging ennever,ntsujii,porkolab
Penning Gauges no High voltage power supplies are turned off, waiting for work at A-port horizontal to be finished. Jun 28 2010 08:07PM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe
Polarimeter no Safe for Machine Entry Sep 14 2007 12:17PM (irby) Jim Irby C-Mod Polarimeter irby
Power - Alternator Air Switch yes Jun 26 2010 11:19PM (dekow) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby
Power - PEI yes Jun 26 2010 11:19PM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Jun 26 2010 11:19PM (dekow) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Jun 26 2010 11:20PM (dekow) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Operational. Jun 28 2010 08:03PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH yes Operational. Jun 28 2010 08:03PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes F and J outer divertor probes are operational. Jun 28 2010 08:04PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Operational, except probe#13 Jun 28 2010 08:04PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes As of 1101123, the 60, 88u, 88l, 140 and variable set at 115GHz are operational. The 50, 75 and 112 are nonoperational. On 1101123, the noise band at ~200kHz is again seen on the 88u and 88l channels. Nov 23 2010 09:30AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Operational. New Langmuir-Mach probe head installed. Jun 28 2010 08:05PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Operational. Jun 28 2010 08:05PM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes Both A and K units are operational. Coil polarity needs to be checked. Jun 28 2010 08:06PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Sparker yes HV supply on, cable run to sparker at k-hor Jun 23 2010 02:41PM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
Surface Science Station yes SSS installed and leak tested. Oct 21 2010 11:31AM (ochoukov) Bruce Lipschultz Radially scanning probe located on K-port blip,ochoukov
TCI yes No new CO2 detector, so still missing edge channels Jun 23 2010 02:40PM (irby) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes Operating with 2 lasers Oct 22 2010 01:06PM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma
TS - Edge yes Operational Jul 14 2010 11:54AM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XEUS yes Operational. Raw spectra stored but not line brightness time histories are going into the tree yet. Aug 24 2010 09:17AM (mlreinke) Matt Reinke X-ray Extended Ultraviolet Spectrometer mlreinke
XTOMO yes Core system working. Edge system waiting for H-modes. Jul 01 2010 11:55AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Session Leader Comments
Dec 22 2010 09:08:35:063AM	1101222001	Seung Gyou Baek	plan: run #0 result: disruption at 0.52sec next: repeat
Dec 22 2010 09:27:46:223AM	1101222002	Seung Gyou Baek	result: LH tripped and plasma disrupted, but checked the presence of scattered signals next: nl04=0.4 with same lh system
Dec 22 2010 09:31:56:860AM	1101222002	Seung Gyou Baek	result: checked the presence of scattered signals next: nl04=0.4 with same lh system
Dec 22 2010 09:38:52:960AM	1101222003	Seung Gyou Baek	result: nl04~5e19, but ok next: nl04=6e19 with same lh
Dec 22 2010 09:52:28:597AM	1101222004	Seung Gyou Baek	result: according to Yuri, locked mode. tripping during n\|\|=2.1, next: try nl04=6e20 again,and lower LH power to 500kW to avoid ionization near LH grill.
Dec 22 2010 10:07:04:553AM	1101222005	Seung Gyou Baek	result: density still lower than requested, several trips during n\|\|=2.1 next: move to nl04=0.8 to incrsease the density
Dec 22 2010 10:20:56:987AM	1101222006	Seung Gyou Baek	locked mode at 0.34sec and disrupted later next: repeat with nl04=0.8
Dec 22 2010 10:36:53:813AM	1101222007	Seung Gyou Baek	disrupted before lh at 0.46 sec next: turn off the Argon, and repeat
Dec 22 2010 10:48:34:043AM	1101222008	Seung Gyou Baek	nice steady nl04~7.5, spectrum recorder shows slight decrease of the noise floor, but still cannot see scattered signals.Greg informs that outer gap changes during n\|\|=2.1 which causes tripping. next: raise nl04~8.5
Dec 22 2010 11:07:11:717AM	1101222009	Seung Gyou Baek	scattered signals appear over the noise floor. many LH trips durig n\|\|=2.1 next: repeat except outer gap 2cm, lower Plh=500kW,
Dec 22 2010 11:25:18:917AM	1101222010	Seung Gyou Baek	nl04=7.5e19, LH went smoothly. next: increase nl04 by 1e19
Dec 22 2010 11:35:59:497AM	1101222011	Seung Gyou Baek	many LH trips next: increase outer gap to 2.5cm, repeat
Dec 22 2010 11:58:28:920AM	1101222012	Seung Gyou Baek	many LH trips, but spectrum recorder shows no change in the noise floor during LH. was able to obseve several scatterd peaks. next: nl04=0.5e20,n\|\|=2.3 and 2.5
Dec 22 2010 12:07:01:450PM	1101222013	Seung Gyou Baek	nl04~5e19,many LH trips, but spectrum recorder definitely shows high noise floor. next: same as shot 8, n\|\|=1.9,2.3, Plh=400kW
Dec 22 2010 12:20:03:033PM	1101222014	Seung Gyou Baek	nl04~7.4e19, nice shot next: same as shot 10 except n\|\|=1.9, 2.3, Plh=400kW
Dec 22 2010 12:21:32:007PM	1101222014	Seung Gyou Baek	nl04~7.4e19, nice shot next: same as shot 10 except n\|\|=1.9, 2.3, Plh=400kW
Dec 22 2010 12:35:20:560PM	1101222015	Seung Gyou Baek	another good shot, nl04 slightly higher than previous shot, next: increase nl04 slightly,same LH system
Dec 22 2010 12:54:21:837PM	1101222016	Seung Gyou Baek	good shot next: change in LH power, same as shot #13, n\|\|=1.9, Plh=200->400kW
Dec 22 2010 01:08:33:410PM	1101222017	Seung Gyou Baek	good shot next: same except Plh=200,600kW
Dec 22 2010 01:22:52:790PM	1101222018	Seung Gyou Baek	good low density plasma next: move to higher density, same as 14, but Plh change
Dec 22 2010 01:23:56:697PM	1101222018	Seung Gyou Baek	good low density plasma next: move to higher density, same as 14, but Plh change
Dec 22 2010 01:39:27:050PM	1101222019	Seung Gyou Baek	good shot, can see the difference between 200kW and 550kW next: raise the density same as 15
Dec 22 2010 01:55:01:383PM	1101222020	Seung Gyou Baek	another good LH shot, noise floor dropped by 5dB during Plh=550kW, compared to #19 next: raise density same as 16
Dec 22 2010 02:07:43:820PM	1101222021	Seung Gyou Baek	good shot, next: repeat with nl04~6e19
Dec 22 2010 02:29:52:403PM	1101222022	Seung Gyou Baek	good shot at nl04~5.7e19 next: now move to current scan with discharge #20 Ip=0.4MA
Dec 22 2010 02:37:38:093PM	1101222023	Seung Gyou Baek	Ip seems to low for this density. next: try higher current, 1MA
Dec 22 2010 02:50:56:723PM	1101222024	Seung Gyou Baek	disrupted at 0.47 sec next: repeat
Dec 22 2010 03:27:29:153PM	1101222025	Seung Gyou Baek	disruption at 0.72sec next: repeat the discharge #20
Dec 22 2010 03:37:04:397PM	1101222026	Seung Gyou Baek	good shot, behaves same to #20. next: try Ip=1MA
Dec 22 2010 04:10:57:060PM	1101222027	Seung Gyou Baek	clean LH shot, do not notice the difference between shot #26 and shot #27 next: raise plasma current Ip=1.2MA
Dec 22 2010 04:13:34:193PM	1101222028	Seung Gyou Baek	give up the current scan next: reload 1101221005 with appropriate changes (see physop) add ICRF 2MW for 0.6-0.9sec, LH n\|\|=2.3, 400kW for LH=0.7~1.2
Dec 22 2010 04:24:48:940PM	1101222029	Seung Gyou Baek	had a brief H-mode, there is a single measurment during H-mode next: repeat with longer ICRF pulse (0.6-1.2sec)
Dec 22 2010 04:33:08:300PM	1101222030	Seung Gyou Baek	disruption at 0.75 sec next: try again
Dec 22 2010 04:41:49:160PM	1101222030	Seung Gyou Baek	disrupted next: repeat
Dec 22 2010 04:47:12:100PM	1101222031	Seung Gyou Baek	brief H-mode before LH comes L-mode nl04~5.5e19 with 2MW ICRF during LH next: repeat with 3MW ICRF
Dec 22 2010 05:00:23:840PM	1101222032	Seung Gyou Baek	lots of H-mode, see one scattered signal during H-mode next: raise density slightly
Dec 22 2010 05:13:58:570PM	1101222033	Seung Gyou Baek	observe several scattered signals during H-mode last shot of the year. Thank you,everybody!

Physics Operator Comments
Dec 22 2010 08:47:15:980AM	1101222001	Yijun Lin	Shot 1: segment 1 from the latest cryopump startup 1101209002 PG4 gas -0.555 to -0.50 s segment 2 from shot 1101019014 (cryopumped USN) but change nl04 to 1.0e20 m^-2, Ip 0.8 MA, also shorten the flat top to 1.5 sec. (zero out pg1. It was for argon, but the bottle is Ne in today's setup, and we don't need it) Ask EO to change fizzle detector to 2.1 sec (for LH experiment). program 50 ms argon (PG5 H-bottom) Load at 22-Dec-2010 08:46:34.00 Open tree /home/ylin/pcs_scratch -1 Open tree done
Dec 22 2010 05:05:20:103PM	1101222001	Yijun Lin	program: 5.4 T, 0.8 MA, 1.0e20 m^-4, USN result: plasma. disrupted at 0.52 sec due to Locked mode Next: slow down the density rise programing slightly. repeat.
Dec 22 2010 09:23:52:563AM	1101222002	Yijun Lin	program: 5.4 T, 0.8 MA, 1.0e20 m^-4, USN result: plasma. disrupted at 0.8 sec due to injection. But SL got some data during LH. Startup ok. Next: nl04 = 0.4.
Dec 22 2010 10:01:25:060AM	1101222003	Yijun Lin	program: 5.4 T, 0.8 MA, .4e20 m^-2, USN result: plasma, full-length. Startup ok. Next: nl04 = 0.6
Dec 22 2010 10:01:17:130AM	1101222004	Yijun Lin	program: 5.4 T, 0.8 MA, 0.6e20 m^-2, USN result: plasma, full-length. Startup ok. but the pre-fill 0.070 mtorr seems to be high (for all shots today). Next: nl04 = 0.65 (to make it 0.6). reduce pre-puff by 2 ms (-0.553 to -0.5)
Dec 22 2010 10:01:10:553AM	1101222005	Yijun Lin	program: 5.4 T, 0.8 MA, 0.65e20 m^-2, USN result: plasma, full-length. Startup ok. pre-fill pressure did not change. next: nl04 = 0.8 shorten pre-fill 1 ms.
Dec 22 2010 10:20:47:193AM	1101222006	Yijun Lin	program: 5.4 T, 0.8 MA, 0.8e20 m^-2, USN result: plasma, disrupted at .4 sec. (locked mode starts at 0.33 s) Density is quite low at this time... Startup ok. next: repeat. (program faster density rise).
Dec 22 2010 10:37:43:597AM	1101222007	Yijun Lin	program: 5.4 T, 0.8 MA, 0.8e20 m^-2, USN result: plasma, disrupted at .48 sec. (no locked mode this time) Startup ok. Cannot find anything that is defintely wrong (according to Wolfe) next: turn off Argon and see if I can avoid disruption.
Dec 22 2010 10:53:40:533AM	1101222008	Yijun Lin	program: 5.4 T, 0.8 MA, 0.8e20 m^-2, USN result: plasma, full length Startup ok. next: Puff argon at 0.3 sec for 20 ms. and nl04 to 0.85e20. Also increase outer gap by 2 mm.
Dec 22 2010 11:14:54:947AM	1101222009	Yijun Lin	program: 5.4 T, 0.8 MA, 0.85e20 m^-2, USN result: plasma, full length Startup ok. (an issue with H-bot gas valve high voltage. Decide to switch Argon to B-side-lower) next: 1. increase outer-gap more, to 2 cm. 2. same density. 3. Pump out Ne on B-side lower, replace with 1 PSI argon, hybrid enabled. 4. Program 75 ms Argon puff from B-side-lower (PG1)
Dec 22 2010 11:21:14:620AM	1101222010	Yijun Lin	program: 5.4 T, 0.8 MA, 0.85e20 m^-2, USN result: plasma, full length Startup ok. (Joe and Yuri debugging H-bot gas problem...) Switch to B-side lower for Argon successful. Next: raise nl04 to 0.95e20 m^-2. Shorten pre-puff by 1 ms.
Dec 22 2010 11:37:29:180AM	1101222011	Yijun Lin	program: 5.4 T, 0.8 MA, 0.95e20 m^-2, USN result: plasma, full length Startup ok. Next: Same density. Raise outer-gap to 2.5 cm.
Dec 22 2010 11:50:47:207AM	1101222012	Yijun Lin	program: 5.4 T, 0.8 MA, 0.95e20 m^-2, USN result: plasma, full length Startup ok. Next: Shorten pre-fill by 1 ms again. Raise outer-gap by 0.2 cm. nl04 = 0.5, change LH n\|\|
Dec 22 2010 12:01:29:770PM	1101222013	Yijun Lin	program: 5.4 T, 0.8 MA, 0.5e20 m^-2, USN result: plasma, full length Startup ok. Next: nl04 0.8e20. same shot 8
Dec 22 2010 12:32:50:713PM	1101222014	Yijun Lin	program: 5.4 T, 0.8 MA, 0.8e20 m^-2, USN result: plasma, full length Late breakdown. Bz0 has been creeping up. Next: nl04 0.85e20. same as shot 10 Change IC_EF4u from -1290 to -1295. Shorten pre-fill by 2 ms.
Dec 22 2010 12:34:13:327PM	1101222015	Yijun Lin	program: 5.4 T, 0.8 MA, 0.85e20 m^-2, USN result: plasma, full length breakdown ok. Next: nl04 0.9e20. lower than shot 11 (0.95), but higher than this shot Shorten pre-fill by 2 ms.
Dec 22 2010 12:51:29:747PM	1101222016	Yijun Lin	program: 5.4 T, 0.8 MA, 0.9e20 m^-2, USN result: plasma, full length start up ok. Next: nl04 to 0.5e20, same as shot 13.
Dec 22 2010 01:05:52:563PM	1101222017	Yijun Lin	program: 5.4 T, 0.8 MA, 0.5e20 m^-2, USN result: plasma, full length start up ok. Next: repeat. no PCS change. (different LH power)
Dec 22 2010 01:21:17:013PM	1101222018	Yijun Lin	program: 5.4 T, 0.8 MA, 0.5e20 m^-2, USN result: plasma, disrupted 1.55 sec during ramp down. start up ok. Next: nl04 0.8e20, same as shot 14. no change in start-up.
Dec 22 2010 01:44:30:040PM	1101222019	Yijun Lin	program: 5.4 T, 0.8 MA, 0.8e20 m^-2, USN result: plasma, full length. start up ok. Next: nl05 0.85e20 m^-2, same as shot 15 (run-on transmitters 2,3,4 for ICRF for later discharges)
Dec 22 2010 01:50:57:143PM	1101222020	Yijun Lin	program: 5.4 T, 0.8 MA, 0.85e20 m^-2, USN result: plasma, full length. start-up ok. Next: nl04 = 0.9e20 m^-2
Dec 22 2010 02:07:14:890PM	1101222021	Yijun Lin	program: 5.4 T, 0.8 MA, 0.9e20 m^-2, USN result: plasma, full length. start-up ok. Next: nl04 = 0.6e20 m^-2.
Dec 22 2010 02:23:14:337PM	1101222022	Yijun Lin	program: 5.4 T, 0.8 MA, 0.6e20 m^-2, USN result: plasma, full length. start-up ok. Next: nl04 same as shot 20, 0.85 e20 m^-2, Ip 0.4 MA.
Dec 22 2010 02:37:36:847PM	1101222023	Yijun Lin	program: 5.4 T, 0.4 MA, 0.85e20 m^-2, USN result: plasma, disrupted at 0.97 sec (too high density for this Ip?) start-up ok. Next: 1.0 MA. same density.
Dec 22 2010 03:05:32:557PM	1101222024	Yijun Lin	program: 5.4 T, 1.0 MA, 0.85e20 m^-2, USN result: plasma, disrupted at 0.47 sec (PF breaker pulled. EF1L) start-up ok. Next: repeat.
Dec 22 2010 03:30:41:663PM	1101222025	Yijun Lin	program: 5.4 T, 1.0 MA, 0.85e20 m^-2, USN result: plasma, disrupted at 0.72 sec (PF breaker pulled, EF1L again, at 0.44 sec Don't know why it misbehaved. Next: reload shot 20. 0.8 MA. See if it helps.
Dec 22 2010 03:40:13:483PM	1101222026	Yijun Lin	program: 5.4 T, .8 MA, 0.85e20 m^-2, USN result: plasma, full-length (no EF1L problem) Next: raise current to 1.0 MA.
Dec 22 2010 03:49:25:010PM	1101222027	Yijun Lin	program: 5.4 T, 1.0 MA, 0.85e20 m^-2, USN result: plasma, disrupted at 1.5 s, at the beginning of ramp-down. start-up ok. next: raise current to 1.2 MA.
Dec 22 2010 04:23:13:280PM	1101222028	Yijun Lin	program: 5.4 T, 1.2 MA, 0.85e20 m^-2, USN result: plasma, disrupted at .5 s. Again EF1L problem. start-up ok. next: Run H-mode Load an LSN shot segment 2 from 1101221005 to segment 3 change current to 0.8 MA. nl04 0.6e20 m^-2 add 0.5 cm to outer gap. Add ICRF power. To run with LH. Turn off segment 2, turn on segment 3.
Dec 22 2010 05:02:01:380PM	1101222029	Yijun Lin	program: 5.4 T, .8 MA, 0.6e20 m^-2, LSN plasma full length. Got H-mode.
Dec 22 2010 04:32:55:167PM	1101222030	Yijun Lin	program: 5.4 T, .8 MA, 0.6e20 m^-2, lSN Got H-mode in ICRF. disrupted at 0.74 sec due to injection. start-up ok. next: repeat.
Dec 22 2010 04:48:15:507PM	1101222031	Yijun Lin	program: 5.4 T, .8 MA, 0.6e20 m^-2, LSN result: plasma. full length. Got H-mode. But not with LH. start-up ok. next: repeat.
Dec 22 2010 04:58:05:197PM	1101222032	Yijun Lin	program: 5.4 T, .8 MA, 0.6e20 m^-2, LSN result: plasma. full length. Got many H-modes. start-up ok. next: raise nl04 to 0.9e20 m^-2. Maybe we can get EDA H-mode.
Dec 22 2010 05:11:52:393PM	1101222033	Yijun Lin	program: 5.4 T, .8 MA, 0.6e20 m^-2, LSN result: plasma. full length. Got many H-modes. start-up ok. End of run. This is the last shot of calendar year 2010.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:03:11:560AM	Plasma	Ok
2	09:16:55:847AM	Plasma	Ok
3	09:30:06:240AM	Plasma	Ok
4	09:42:54:293AM	Plasma	Ok
5	09:55:51:230AM	Plasma	Ok
6	10:09:06:647AM	Plasma	Ok	PF Breaker opened after plasma disruption
7	10:23:32:840AM	Plasma	Ok	PF Breaker opened after plasma disruption
8	10:39:08:480AM	Plasma	Ok
9	10:53:39:587AM	Plasma	Ok
10	11:14:32:807AM	Plasma	Ok
11	11:27:43:220AM	Plasma	Ok
12	11:41:53:380AM	Plasma	Ok
13	11:57:07:260AM	Plasma	Ok
14	12:12:34:610PM	Plasma	Ok
15	12:28:02:113PM	Plasma	Ok
16	12:43:37:490PM	Plasma	Ok
17	01:00:34:030PM	Plasma	Ok
18	01:16:02:287PM	Plasma	Ok
19	01:31:49:600PM	Plasma	Ok
20	01:47:28:423PM	Plasma	Ok
21	02:03:04:307PM	Plasma	Ok
22	02:18:46:923PM	Plasma	Ok
23	02:32:19:417PM	Plasma	Ok
24	02:45:08:767PM	Plasma	Bad	EF1L had problems
25	03:01:33:107PM	Plasma	Bad	EF1L Power Supply Again
26	03:31:31:133PM	Plasma	Ok
27	03:44:18:770PM	Plasma	Ok
28	03:57:03:847PM	Plasma	Bad	EF1L Power Supply Fault
29	04:14:47:630PM	Plasma	Ok
30	04:27:25:913PM	Plasma	Ok
31	04:40:02:530PM	Plasma	Ok
32	04:52:45:520PM	Plasma	Ok
33	05:08:15:140PM	Plasma	Ok