Alcator C-MOD is in a scheduled maintenance and upgrade period.
	Progress toward readying the machine for the fall operating
	campaign is continuing.

	In-vessel work is now being wrapped up.  The edge Thomson scattering
	head has been installed in the machine and aligned.  Modifications
	to the divertor tiles at the scattering location are nearly complete,
	after which divertor installation at A-port can be completed.  Only
	four divertor modules, all associated with the edge Thomson scattering,
	remain to be installed. All halo Rogowskis work is now complete.
	The new core Thomson scattering viewing dump has been installed.
	All in-vessel work associated with the RF antennas is complete.

	Diagnostic calibrations requiring in-vessel access have begun.
	Calibration of the neutron detectors was completed over
	the weekend.  Last week, alignments of the divertor fiber
	array, core Thomson scattering, perpendicular charge
	exchange, and lithium pellet injector tracking camera were
	performed.

	We have finished installation of the 13.8 kV breaker for the
	new EF4 power supply.  Control wiring installation continues as
	does installation of the 13.8 kV lines to the transformer.

	Layout of the roughing pump vent manifold required for
	the boronization system is complete, with installation to begin
	in a couple of days.  Control system wiring to the boronization
	gas control is also in progress.

        Molybdenum tiles with tungsten markers and an evaporated Mo
	over-layer 100 nm thick, which had been placed at the inner wall
	of C-Mod during the campaign from Nov 1994 to Jun 1995, have been
	analysed using Rutherford backscattering at Sandia National Labs,
	Albuquerque to determine erosion  rate.  Near the midplane all the
	tungsten markers were removed while near the bottom of the inner
	wall one sample still had some tungsten left.  These results are
	consistent with the SOL ion flux and energy measured by the scanning
	probe during the limited phase of standard discharges. New marker
	tiles, with chromium markers and a 500 nm Mo over-layer, are being
	installed on the inner and outer divertor targets as well as the
	inner wall for the next campaign.

	Fredrik Wising from the MIT-PFC theory group has made
	improvements to the neutral physics in the 2-D edge plasma
	fluid code UEDGE. These chages have allowed him for the first time to
	simulate detachment in the strongly curved C-Mod geometry.  A neutral
	momentum equation has been added which is fully coupled to the
	ion momentum equation through ion-neutral collisions, ionization,
	and recombination.  This change allows parallel plasma momentum to be
	converted into neutral momentum, which is dispersed to the
	material walls due to the high neutral viscosity.  The new
	simulations, for the first time, reproduce the pervasive
	experimental feature that the plasma detaches gradually,  starting
	at the strike point, while always remaining attached above the
	``nose'' of the divertor channel.  The strike point heat flux
	and current drop by an order of magnitude as 0.5% of carbon is
	introduced to induce detachment.  At detachment, the plate
	temperature remains at or above about 1 eV all the way out to
	the nose, i.e. higher than in the orthogonal plate simulations
	and in agreement with the experimental data. The separatrix Te
	remains	low over an extended region between the target and
	the X-point.

	Joe Bartolick from PPPL is here helping with the installation
	of the edge Thomson scattering.  Mark May is visiting from
	Johns Hopkins re-installing his Moly monitor, and beginning
	discussions on the installation of two new diagnostics. Ben Welch
	from the University of Maryland is here installing a new
	high resolution spectrometer.  Nobuyuki Noda from the
	National Institute for Fusion Science in Tokyo was here for
	discussions with several of our scientists about high-Z first
	walls and boronization.