| Miniproposals |
| Operators | |
| Session leader(s): | |
| Physics operator(s): | |
| Engineering operator(s): | Sam Pierson |
| Engineering Operator Run Comment |
| automatically entered by signon - please replace with real comment |
| Session Leader Plans |
| Entered: Mar 3 2010 03:38:22:323PM |
| Author: Nathan Howard |
| The purpose of these experiments is to use the modified HiREX Sr. Spectrometer to analyze the impurity transport in H-Mode plasmas. The shots below are designed to scan in collisionality, input power, and density.
LSN Reference shot: 11100303019 (for equilibrium only, see below for RF, Bt, etc.) Cryopump: On Working Gas Species: D2 Argon puffing for Er profiles from HiREX Sr. Laser Blow-Off: Yes Density: nl04 of .6, 1.0e20 Boronization Requested: Yes Standard ECDC Overnight Toroidal Field: 5.4 T Plasma Current: .4, .55, .7, ,.85, 1.0 MA ICRF Power: D & E antennae: 80 MHZ, maximum power J-antennae: 78 MHz, maximum power needed to supplement D and E to get to 4 MW Required Diagnostics: Thomson Scattering (ne and Te) ECE (Te) TCI (ne) Soft X-ray arrays (all 4) McPherson (setup to view the peak of the Li-like Ca (~r/a = .6 to .7 ) HiReX Jr. (setup to view He-like 3.177 Angstrom Ca line at a core view) HiReX Sr. (setup using the Ca crystal for viewing He-like Ca and generating charge state density profiles, if possible, rotation information, Er profiles and Ti measurements can be obtained from the He-like Ar) Requested Diagnostics (not required but desired) Reflectometry LLNL (XUES) Spectrometer (at lowest possible integration time) PCI Setup for low k fluctuations Primary Shots ------------------------------------------------------------------------------------------------------------ Operate in Lower Single Null (LSN) equilibrium only from: 1100303019 1) Target is Steady State EDA H-Mode: Ip=1.0 MA and L mode target nl04=1e20 Target shot is: 2 RF steps (2.0, 3.0, MW @ .5 and 1.1 sec) Injections at: .8, 1.2 sec - Raise RF steps to 3.5 and 4.0 MW and repeat shot The above current scan is chosen to measure the extremes first and then fill in the current scan. 2) Target is Steady State EDA H-Mode: Ip=.7 MA and L mode target nl04=1e20 Target shot is: 2 RF steps (2.0, 3.0 MW @ .5 and 1.1 sec) Injections at: .8, 1.2 sec - Raise RF steps to 3.5 and 4.0 MW and repeat shot 3) Target is Steady State EDA H-Mode: Ip=.4 MA and L mode target nl04=.6e20 Target shot is: 2 RF steps (2.0, 3,0 MW @ .5 and 1.1 sec) Injections at: .8, 1.2 sec - Raise RF steps to 3.5 and 4.0 MW and repeat shot *Note: If at low current the impurity confinement time is short enough (75ms or less) then 3 injections (.7, .95, 1.2 sec) and 3 RF steps (2, 3, and 4 MW) will be attempted in a single shot. 4) Target is Steady State EDA H-Mode: Ip=.55 MA and L mode target nl04=.8e20 (estimated 6 shots to achieve) Target shot is: 2 RF steps (2.0, 3.0, MW @ .5 and 1.1 sec) Injections at: .8, 1.2 sec - Raise RF steps to 3.5 and 4.0 MW and repeat shot 5) Target is Steady State EDA H-Mode: Ip=.85 MA and L mode target nl04=1e20 (estimated 6 shots to achieve) Target shot is: 2 RF steps (2.0, 3.0 MW @ .5 and 1.1 sec) Injections at: .8, 1.2 sec - Raise RF steps to 3.5 and 4.0 MW and repeat shot Secondary Shots (10 shots total) ---------------------------------------------------------------------------------------------------------- Repeat the above shots but raising the target density to try to vary the density independent of current. |
| Physics Operators Plans |
| Entered: Mar 3 2010 04:57:46:953PM |
| Author: Ron Parker |
| Physop Plan and Engineering setup for Thursday, March 4th, 2010
MP598 - Impurity transport studies in L and H-mode using modified HIREX-SR SL: Howard PO: Parker ------------------------------ Standard Boronization followed by Post boronization ECDC: ---------------------------- 1st Gas Setup: Gas: He sweep: 44/45/103 cm scan: 20/120 s Pressure: 5e-5 Torr Duration: 2 hrs 2nd Gas Setup Gas: D2 sweep: 44/45/103 cm scan: 20/120 s Pressure: 2e-4 Torr Duration:1 hr ------------------ Engineering setup ------------------ Run begins at 09:00 and ends at 17:00 Power systems as on: 1100303019 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 1 psi Ar Hybrid DISABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) Leave NINJA as is, DISABLED Enable gatevalves and shutters: ECE, VUV, HiREX Sr, Z-bolo, B-spectrometer Torvac gatevalve toggle (yes/no): no Boronization(yes/no): yes Overnight ECDC (yes/no): yes, post boronization ICRF(yes/no): yes, all antennas LH(yes/no): no Cryopump (yes/no): yes Vessel temperature: 35/35/35 Physop Plan: ------------- Start with equilibrium from 1100303019, but with I_p=1 MA, nl04=1e20 m_2. Follow Session Leader's plan from there. |
| Session Leader Summaries |
| Physics Operator Summaries |
| Session Leader Comments |
| Physics Operator Comments |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| System Availability | |||
| Mar 4 2010 07:08:25:200AM | |||
| The alternator is experiencing an oil pressure problem the run start may be delayed this morning. | |||