General Meeting Summary 6/30/22

PARTICIPANTS: Aaron Brown, Alexandre Camsonne, Fernando Barbosa, Bogdan Wojsekhowski, Brad Sawatzky, Carlos Munoz-Camacho, Deb Biswas, Erik Wrightson, Hamlet Mkrtchyan, Julie Roche, Steven Lassiter, Marie Boer, Mark Jones, Paul King, Abishek Karki, Paulo Medeiros, Vardan Tadevosyan, Vladimir Berdnikov, Tanja Horn, Pramita Tiwari

ASSEMBLY UPDATES

• Crystal stacking

• viewing photos of NPS during assembly - one taken at same angle as the mechanical drawing

• Cabling

• presently 4 columns are fully cabled and PCBs installed
• time for installation: 2 columns/day - 2 people can work, need to take shifts
• cabling the remaining 26 columns would take 3 weeks total
• cosmic paddles are installed and connectors - HV and signal cables need to be connected to the paddles

• Ongoing:

• cabling on top part (PS, DAQ, LED controls, LV)
• connect HV and signal cables and PS for fans

• DAQ/Cables/Infrastructure - 80% moved into EEL-108 and cables being bundled

• The team: Hamlet, Vardan, Pramita, Erik
• God progress - to date 200 cables bundles
• Discussion about moving NPS equipment out of the HD cleanroom area with target date July 6th

• NPS detector stays in its area
• crates can be disposed of

• HV cables complete in EEL126 - ready to go
• LV cables - being put together (Fernando and team)

ASSEMBLY PLANNING

• Finishing the cabling of 26 remaining columns

• Orsay team could come to finish up cabling
• in preparation need to do PMT assembly

• Preparation of PMTs

• put PMT together with HV divider and put sticker on it
• Orsay team can then do the more detailed assembly
• plan to complete PMT preparation by end of August

• Maintenance of detector

• anyone can participate and be training in the assembly of columns
• contact Carlos to schedule

• Turning on the HV and start tests

• plan to hook up the 4 columns into the DAQ before the end of July

• PMT checkout with scope
• plug into DAQ
• check out system with DAQ
• run and read all instrument analysis and controls (chiller, temp, etc.)

• Brad should be there for initial HV turning on

• Check of HV cables

• continuity check - was done for inside cables
• recommendation: do visual inspection for outside cables
• have some spare cables as needed

DSG UPDATES (Aaron)

• EPICS PHOEBUS screen development - monitoring and control screens for both chiller and thermal readback

• can be rolled out as soon as next week for checking out the readbacks before turning on the HV
• ready to run on Linux - software environment should be compatible
• System to run on is cdaql3 - start staging software there

• Configuration file control

• Ansys thermal analysis

• investigate how heat propagates along crystals

• Cables for scintillator paddles: all parts on site except pins; once these arrive assembly can happen

• HV crates

• one is still with the DSG (HallC-1); located in cleanroom in front of EEL-108

• LED control GUI

• setup is done, need to do programming

• Action Items:

• install HV controls and GUI on cdaql3 and test
• LED control GUI programming - set up meeting with Brad
• LED ribbon cable connectors - crimp on connectors - contact Amrit about the task (Brad)

MECHANICAL UPDATES (Paulo)

• New beamline procurement

• proceed with small angle beamline
• wait with larger angle beamline procurement for simulation results

DAQ/ELECTRONICS/SOFTWARE

• Critical path: event unblocking - ongoing discussions with David H. about possible options

• For detector checkout all is in end

• modified firmware etc. will be checked
• need to go through the full chain

• Grounding and tests of ground

• ground connector on HV divider
• ground on frame is available but not planning to connect it - are there any tests that could be done to verify that it is not needed before columns cabling is finished?

• start with a clean setup for baseline
• next check noise pickup, e.g., plug in a number of noise devices and see if pickup exists

NEXT MEETING: THURSDAY 21 JULY 2022 AT 9:00AM ET