General Meeting Summary 5/2/19

DISCUSSION OF DRAFT TALKS

TANJA

• Add experimental techniques for both sets of experiments
• Under General requirements: add electron beam energies (p.3) and statement that two separate configurations (SHMS right for angles below 23 deg and SHMS left) are needed (p.4)

STEVE W.

• Input on exact number of crystals (Tanja)
• Refer to Carlo's talk for discussion of frame and amplifiers including results from recent beam tests

• plan for frame delivery is summer 2020

• Time frame for detector placement and cabling - estimate is ~one month based on Hall A DVCS experience
• High level software - list INP-Orsay
• Radiator - same as for J/Psi, follow up with target group on details

STEVE L.

• Change "patch panel #1" to something like "cable support"
• Plan for transition from SHMS right to SHMS left configuration in backup
• Clarify spectrometer support group time, e.g. 100% available
• Ready to put slides into ERR specific template as needed

CHARLES

• Working on final slides - plan is to include further detail on: 1) plan for mapping and running and 2) safety and operation

CARLOS

• Working on final slides
• Input on exact number of crystals (Tanja)

BRAD S.

• Working on final slides

• Slow controls and LED subsystems - follow up with Carlos and Julie
• Communications with fast electronics group ongoing

JAY

• No changes to slides

GABRIEL

• page 2 (Charge reminder): Add specifics for neutral particles: photon, neutral pion
• page 4 (Commissioning experiment lessons): structure along these lines

• re-use HMS that was commissioned - works
• some experiments used in the comisssionng are also relevant for NPS ERR (SIDIS charged pion, exclusive charged meson)

• page "Simulation and Analysis": include total data produced for WACS - David H can provide this information

• in general, rates seem ~10 times less than for DVCS
• Table with kinematic rates would be good - David H can send such a table to Brad and Alexandre

• page "DVCS track record": include:

• DVCS 12 GeV analysis progress
• SIDIS and exclusive mesons - could use Hall C ERR 2016 for template
• WACS - examples of 2002 run and 2005 and 2007 publications (include references) as a way to expedite and analysis by doing up front GEANT4/SIMC work

• WACS specific slides: show GEANT4/SIMC slides and illustrate with it how these are used like real data - speeds up analysis
• Experimental techniques: show for both DVCS/pi0+SIDIS and WACS
• Add a summary with points:

• remaining tasks are small and known
• ready to expedite
• optimize tasks to expedite analysis towards publication - track record speaks for itself

NEXT MEETING: THURSDAY 9 MAY 9:00AM-11:00AM (ET)