Minutes of the E00102 meeting
Thursday, September 06, 2001
BR

present:

WH  Wendy Hinton
JLR John Lerose
DM  Dave Meekins
BR  Bodo Reitz
AS  Arun Saha
LW  Larry Weinstein

1.) LW summarized, what happenend during his absence.
    Mentionned the Waterfalltarget side windows, which are
    now thinner ( 1 mil ), than previously thought.
    JLR and LW discussed the effects of the 15 mil Al window
    between scattering chamber and HRS.

2.) DM reported about problems with the Waterfalltarget:
    - during pressure tests of the windows mounted at the vessel
      itself, they failed at 10 psig.
    - problems are the flanges, they are different to the ones
      used for the successfull pressure tests before,
      especially he mentionned some knife edges producing the
      problem
    - flanges need to be redesigned, therefore he needs to know
      the minimum exit angles
      => left arm: 12.5 deg - HRS acceptance = 10.8 deg
         (actual design allows 9.3 deg)
      => right arm: 20 deg
         (BR mentionned, that for RICH commissioning, it would
          be nice, to go to smaller angles on this side as well,
          but RICH will be flexible, if it is impossible)
    - A new survey of the Waterfalltarget might be necessary.
      schedule is becoming very tight
    - option of moving or rotating the can was discussed

3.) LW asked for final equipment of detector package,
    BR reported:
    - A2 has been added for RICH commissioning, will not
      affect oxygen
    - parts for S0 on the left arm have not been delivered in
      time. it is yet  not clear, if S0 will be ready in-time
    - if not, PR or one of the aerogels will be used as third
      trigger instead
    LW repeated, that there are no plans to change PMTs anymore

4.) On the Hall A webpage, a link to the oxygen E00102 webpage
    should be added

5.) Safety Documents have to be written now. AS mentionned, that he
    will be absent shortly before the experiment starts, will hand
    paperwork over to BR in that period

6.) BR asked, who will update, write and test  manuals, kumacs.. etc. for
    online-analysis and checks. LW and DM suggested, that this
    would be a good starting point for the experiments student, so
    WH and MA should do this.

7.) DM asked, who in the collaboration already is familiar with
    espace and/or another analyser. From the people present, only
    BR admitted to have some experience.

8.) BR suggested, to assign "specialists" for every device used
    during the experiment, additionally to the responsible Hall A
    staff.

9.) Runplan issues:
    beam energy should be fixed during the whole experiment, including
    the target commissioning
    details about the physics runplan have to be adjusted during the
    experiment, after the analysis of the first, short kinematics.