Notes from Local Meeting on April 1, 2004
In attendance: David Armstrong, Hachemi Benaoum, Rob Feuerbach, Lisa
Kaufman, Kent Paschke, Ryan Snyder
- Targets
- Rob reports talking to Dave Meekins concerning choices
of solid targets for HAPPEX. The ladder has space for 5 solid targets.
Those will be "empty", BeO viewer, Lead, Single Carbon, and one other,
probably either a Titanium Hydride powder in an Aluminum vessel or a Kapton
foil. It was hoped to have both a TiH and Kapton target, but it appears that
one or the other must be chosen, with the most important criteria being
the probably of surviving long enough to make a useful measurement.
- Attended recent Cryogenics review. The CHL will be providing
additional He coolent directly to Hall A (as opposed to simply bolstering
the ESR) in order to run the high-power cryotargets.
- A cryo incident in Hall A that would previously have brought down
the ESR can now potentially bring down the CHL as well!
- They are very concerned that target operators be properly trained,
to the extent that they may ask to assist or supervise training of
the Hall A cryo operators.
- Regarding the Helium experiment radiation budget: met with Pavel.
Rates are continuously monitored around the experimental area and at the site
boundry, with values displayable (and logged) via EPICS. No special
arrangments will be necessary to monitor these rates
for the HAPPEX-He test run.
- The problem concerns high energy neutrons coming out the
target
- Lisa
- Measured steering from Arwen (only observed position
differences of 12-16 nm)
- Will begin characterizing new cells soon.
-
Ryan
- Showed a possible imaging solution. More thinking to be done,
but there look to be some possible solutions that will accomplish what
we want
- Hachemi
- Finished target Lumi cablings.
- Still testing beam lumis.
- Target lumi stand received-- question now is
when to install target lumi
-
Bryan
- HAPPEX "analysis logbook" (based on PSI ELog) in use, linked
from HAPPEX webpage.
- Fixed soldering on one of the HAPPEX ADCs. 1-2 spare ADCs will
be available during the run.
- The Sync monitor is being added to the R-HRS DAQ.
- Work continuing to modify the online GUI to monitor online rootfiles
(replace PANAM)
Ryan Snyder