Difference between revisions of "General Meeting Summary 3/22/17"
Jump to navigation
Jump to search
(Created page with "JLAB DETECTORS * Discussion about SHMS Aerogel Cherenkov detector (Arthur, Hamlet, Vardan) ::* Position dependence data from KPP runs have been analyzed. Results show negligible...") |
|||
| (3 intermediate revisions by the same user not shown) | |||
| Line 2: | Line 2: | ||
* Discussion about SHMS Aerogel Cherenkov detector (Arthur, Hamlet, Vardan) | * Discussion about SHMS Aerogel Cherenkov detector (Arthur, Hamlet, Vardan) | ||
| − | ::* Position dependence data from KPP runs have been analyzed. Results show negligible dependence on vertical position (note and no dependence on horizontal position | + | ::* Position dependence data from KPP runs have been analyzed. Results ([http://www.vsl.cua.edu/cua_phy/images/6/60/Ycord.png horizontal] and [http://www.vsl.cua.edu/cua_phy/images/c/c8/Xcord.png vertical] in the spectrometer coordinate system, where X is pointing down and Y beam right) show negligible dependence on vertical position (note and no dependence on horizontal position |
::* Discussion about getting SP-11 tray ready | ::* Discussion about getting SP-11 tray ready | ||
::::* Walter's group is constructing the cover plate | ::::* Walter's group is constructing the cover plate | ||
| Line 29: | Line 29: | ||
| − | PBWO4 STUDIES AT CUA | + | PBWO4 STUDIES AT CUA (Richard, Andres) |
* working on assembly of the prototype, e.g. cutting aluminum to size, drilling holes etc (Richard) | * working on assembly of the prototype, e.g. cutting aluminum to size, drilling holes etc (Richard) | ||
Latest revision as of 12:05, 23 March 2017
JLAB DETECTORS
- Discussion about SHMS Aerogel Cherenkov detector (Arthur, Hamlet, Vardan)
- Position dependence data from KPP runs have been analyzed. Results (horizontal and vertical in the spectrometer coordinate system, where X is pointing down and Y beam right) show negligible dependence on vertical position (note and no dependence on horizontal position
- Discussion about getting SP-11 tray ready
- Walter's group is constructing the cover plate
- Next steps: 1) install last layer of SP-11 aerogel tiles and support, 2) install wires, 3) install tray in SHMS and perform cosmics tests
- PMT cabling optimization to be done before next hall closing in Fall
- for possible options keep in mind that cannot have negative impact on tray exchanges/sliding out detector from detector stack and work on other detectors near aerogel
- NPS prototype (Arthur, Hamlet)
- Linearity tests of HV dividers have been completed with single crystal prototype - results show that stable up to 1-2 MHz consistent with design specs
- Discussion about tests of NPS cooling systems with 3x3 prototype - idea is to use a closed-circuit design, need to get a suitable chiller
- Gluex DIRC (Greg)
- Discussion about transportation of DIRC bars from Stanford Linear Accelerator to JLab
- bars will be in a crate and transported by truck, monitoring cameras will be installed for all twelve bars, reference spectra will be monitored during transportation, lead vehicle to warn about uneven roads
- discussion about adding a trailing vehicle to address rear-ending
PIXEL DETECTORS (Rachel)
- Discussion about shipment to CUA
- on schedule to arrive on 3/24
- discussion about procurement of an optical table for gantry
- Discussion about detectors at CERN
- good progress - sealed, dry, cooled - calibration data have been taken in control room
PBWO4 STUDIES AT CUA (Richard, Andres)
- working on assembly of the prototype, e.g. cutting aluminum to size, drilling holes etc (Richard)
- working on attentuator circuit to reduce reflections in APD readout (Andres)
TIMELIKE COMPTON SCATTERING (Vardan, Arthur, Pawel)
- Work on preliminary projections and comparison to already approved experiments ongoing
- Proposal deadline is 22 May, but also need to circulate to NPS collaboration
- Decision on whether or not to move forward with PAC proposal this year will depend on outcome of preliminary projections
NEXT MEETING: WED. 29 March at 10:00 AM (EDT)