Jian-ping began the meeting with a brief summary of the important issues

    Alexandre Deur worked on a Monte Carlo simulation for E97-110:

• E97-110 simulation by upgrading Monte Carlo from E94-010
• First stage of simulation ready

• We may need to compromise between cutting windows and not losing too many good events
• If the rate is too high, then the windows can be cut completely.  Will lose > 15% good electrons
• A thick collimator will be used so that there will be no contamination from the front window
• Multiple scattering was not taken into account

        - Wall Thickness:

• Large RC and straggling due to thick wall for GE180
• Radiation length = 7.04 cm (GE180)
• Radiation length = 10 cm (1720)
• Radiation length = 12.7 cm (Pyrex)

- Window contamination due to straggling
 
• New effect, no software cut
• Need empty cell runs to subtract contamination

• GE180:  Theta_0 = 0.74 Degrees
• Pyrex:   Theta_0 = 0.48 Degrees

       - Radiative tails:

• Standard GE189 tail is too large
• 0.9 mm Pyrex: small improvement


- New cell design:
 

• Three possible shapes:  TV tube(only 6 degrees), half TV(both angles), cone
• May need to redesign pick-up coils, reference cell, water cell, and oven
• Some success with small cells using Sol-gel coating
• Coated/uncoated Pyrex cell tests underway
• Need to understand how coating behaves under beam
• No successful full-sized target cell with sol-gel coating
• Need a cell design by Thanksgiving week and consult with glass blowers (J-P/Alexandre)


- Lasers
 

• Will not change lasers for this experiment
• 6 out of 7 lasers used for 1000 to 1600 hours
• 2 spare diode boxes
• The University of Kentucky will provide a new laser
• Two new lasers have been ordered by JLab

         - VDC completed in Root/C++ analyzer
       - RCS experiment will use Root for calorimeter
       - ESPACE will be available as a back up
       - Root was used this past summer for the optics calibration
       - The Root analyzer needs to be tested with existing data (Ole)
       - Ole Hansen will add a Helicity variable to the next version of the Root Analyzer
       - Students showed support to move to the new Root Analyzer

    Run Plan by Alexandre Deur:

       - 18 days of running
       - Use HRS in parallel configuration, with 2 independent DAQs.  Total Rate ~ 6 kHz
       - Change angle ~ 1 shift (w/o survey), survey (or pre-survey position?)
       - Beam current at 10 uA with raser on.  May run at lower current
       - Water Calibration (Vince)
       - Commissioning Survey:  oven, target ladder, pick-up coils, HRS/septa
       - NMR loss measurements
       - Study residual field from septa
       - Compton: continuous running (Alexandre)
       - Moller/Mott (Alexandre/Eugene)
       - Deadtime requirement < 20%

    DAQ:

        Implement high rate capability (Piotr/Bob Michaels)

    Man power/responsibilities:

        - Analyzer(C++):  Xiaofeng Zhu;  ESPACE:  Nilanga
        - Beamline:  Alexandre/Doug or Bodo
        - Target:  Students/Xiaofeng;  reference cell:  Nilanga/Todd Averett
        - Slow control:  Kathy(?), Pavel
        - Septa:  Franco/Guido
        - Detectors:  Ron Gilman
        - Optics commissioning:  Doug/Nilanga/Guido/LeRose
        - Analysis of optics data:  Nilanga/students
        - New design (collimator, cell):  Alexandre/J-P
        - Carbon Target:  Nilanga

    Vincent Sulkosky discussed the target lab status:

        - Field calibrations completeted including holding field and RF field (Vince/Jindong)
        - Pick-up coils and wires replaced with new ones
        - Water signal tests completed by changing the vertical and horizontal position
            of the water cell (Vince/Jindong/Xiaofeng)
        - New Q-coil made, and several Q-curves measured (Vince)
        - Optical alignment for longitudinal paths with laser pointer completed (Patricia/Vince)
        - Wall thickness on all cells used during the experiment is completed except
            for the 25 cm water cell (Vince/Jindong)
        - RTD tests being conducted (Patricia/Jindong)

    Things to do for the target lab:

        - Wall thickness for the 25 cm water cell (Jindong)
        - Laser Alignment (Vince/Patricia/Xiaochao)
        - Clean optical fibers (Patricia)
        - Finish the RTD's (Patricia/Jindong)
        - Analyze water signal data (Vince/Kevin)
        - Install polarized He-3 cell (Vince)
        - Spin up tests (Vince/Jindong)
        - Setup EPR system (Patricia/Jindong/Xiaofeng)
        - Test EPR system (Jindong/Patricia/Xiaofeng)

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