Moller Run Plan for G0 Engineering Run

D. T. Spayde

Stage 1:  Initial Turn On and Commissioning of Apparatus
--------------------------------------------------------

Purpose:  Turn on Moller apparatus, tune it up, and make sure
everything works.  Take first polarization measurement.

Prerequisites:
	- Combined Optics Tune (see below)
	- Schedule during Yan Wang's shift in operations (operator
	swing shift from 11/22-11/26)

Time Required:  4 hours if combined optics tune already in place, 8
(?) hours otherwise.

Necessary Personnel:  Howard Fenker, David Gaskell, Damon Spayde

Procedure:  See "A Tuning Procedure for Hall C Moller Polarimeter" by
Howard Fenker.

Stage 2:  Study of Sensitivities
--------------------------------

Purpose:  Study the effect of various beam and source parameters on
measured polarization.

Prerequisites:
	- Stage 1 of plan complete and successful
	- Permission from Hall A to change/turn off their beam for
	short period of time.
	- Permission from source/operations to adjust laser phase and
	attenuation settings.
	
Necessary Personnel:  Damon Spayde, David Gaskell or Howard Fenker (?)

Procedure:
1)  Establish Moller tune and take baseline polarization
measurement(s).
2)  Vary beam current between 0 and 2 microAmps and take polarization
measurements.
3)  Vary beam position on Moller target +/- 0.5 mm from central value
in X and Y and take polarization measurements.
4)  Insert target of different thickness and take polarization measurement.
5)  Vary Moller raster size and take polarization measurement.
6)  Turn off/vary Hall A beam and take polarization measurement.  
7)  Sample full profile of electron pulse by adjusting laser phase and
slit width.  Adjust laser phase away from optimum and increase slit
width to compensate.  Take polarization measurements at several phase
settings.
8)  Adjust laser attenuator and slit width to maintain constant beam current.
Take polarization measurements at several phase settings.
9)  Insert/remove half wave plate and take polarization measurements.