Notes from Local Meeting June 13, 2005

• Q² Scanner

Piotr Decowski (Smith College) reporting
• Piotr brought 2 detectors from last year and 2 E158 scintillator detectors for counting.
• Needs space for storage and to work on detector. Will ask for it in EEL 122.
• Students arriving end of June

• Helium Target

Kent Paschke reporting for Dave Meekins
• Helium cell was mounted and successfully pressure-tested.
• Knife-edge works

• Source Work

• Nothing really new, but Ryan has tested the alignment procedure for the Pockel Cell
• Ready for July

• New S0 Detector

Purpose: Provide unbiased trigger over entire acceptance (S0 below HAPPEX detector).
• Bryan Moffit reports that both S0 detectors are constructed, bench tested with scope.
• DAQ / analysis in EEL building in progress.

• Septum Sweep Magnet

Purpose: Sweep away low-E Moller scatters, reduce heating in septum by a factor of 7.
• High current tests performed by Paul Brindza. B vs I agrees with TOSCA.
• Field map done, polarity checked.
• More details in HAPLOG

• Compton

• New Problem :   A power supply broke last week. Seeking to repair or replace it now. Alternatives include using a new laser (requires a lot of work).
• Hachemi reports that he's developing the integrating method analysis. Errors are still big, trying to understand it.

• Online and Prompt Analysis

• Bryan Moffit working on some new scripts.
• Bryan to include dithering and/or regression in near-prompt analysis.

• Cavity Monitors

John Musson reporting.
• New electronics in the hall. Measures the position "well", except:
• Upstream signal intensity too low, position signal too high. John will investigate.
• Accelerator test plan submitted. Goal is to finalize calibration.
• Need a VME hard-reset. Bob will ask Jack Segal for it.
• Need analysis of HAPPEX and spectrometer DAQ data.

• Luminosity Monitor

Linsay Glesener reporting
• Beam lumis were turned on and checked out. Looks good. See HAPLOG.

• PMT Linearity

• Lisa started some tests of PMT linearity.
• Results to be posted in HAPLOG soon.

• Documentation

• ESAD and COO done. Waiting on RSAD.
• Will need to update web page.

• Installation and Run Plans

• Both plans needed. Kent and Bob will work on drafts.


Bob Michaels