[BLAST_SHIFTS] C-shift 11/6

From: Bill Franklin (wafrankl@mit.edu)
Date: Thu Nov 07 2002 - 00:18:05 EST


On shift: Vitaly Ziskin, Bill Franklin

Tancredi summarized up until about 21:30. Beam tune with BLAST field on
and slits positions established was finished shortly thereafter. Ops had
125 mA stored in Ring with 27 minute lifetime, although ops had some
concerns about closed orbit. Fuhua or Jan may have to look at this
tomorrow.

We took a few runs (logged on run sheet, starting with 2626) with no gas
flow and last8 trigger. Event rate was fairly high. Wire chambers were
on and Doug looked at some data from home. He saw reasonable looking
tracks, but also a fair amount of background. We also took some short
runs with 0.2 sccm.

Gas flow was then raised to 1 sccm as specified by run plan. This created
some problems for injection and only 90 mA was available. Lifetime was
13 minutes. Voltages and thresholds were loaded to start a Cerenkov
efficiency study which will continue for the full night shift.

-- 
**********************************************************************
Wilbur A. Franklin			*  Phone: 617-253-9518
Bates Linear Accelerator Center		*  FAX:	  617-253-9599
P.O. Box 846				*  Email: wafrankl@mit.edu
Middleton, MA 01949			*
**********************************************************************



This archive was generated by hypermail 2.1.2 : Mon Feb 24 2014 - 14:07:28 EST