Difference between revisions of "General Meeting Summary 12/22/22"
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Latest revision as of 15:52, 4 January 2023
PARTICIPANTS: Arthur Mkrtchyan, Hakob Voshanyan, Bob Michaels, Alexandre Camsonne, Deb Biswas, Hamlet Mkrtchyan, Tanja Horn, Pramita Tiwari, Rolf Ent, Marie Boer, Brad Sawatzky, Carlos Munoz-Camacho, Bogdan Wojstekhowski, Vardan Tadevosyan,
OSCILLATIONS/NOISE ISSUE
- See also the NPS Log entries:
- https://logbooks.jlab.org/entry/4099400
- https://logbooks.jlab.org/entry/4102127
- These did a pretty good job, but still some small noise remained at a lower frequency
- We have a reasonable idea for how to eliminate this residual noise, but the work needs technician support.
- Cross-talk was measured to be small and acceptable.
- Spectra of integrals
Q&A AND DISCUSSION ON PATH FORWARD
- Were the capacitors optimized?
- determined what was needed and tested, found that it works, no further optimization was done
- Are oscillations in phase with capacitor?
- yes all in phase
- 15 MHz oscillations about 30% of the time - it is inside the wave of the calorimeter signal
- during production there will be no scintillator, but there will be other noise in the hall
- analysis of the data
- first issue was the specific usage of the software
- second issue was that the mode should be mode 1 (raw mode) and not mode 7
- Good to test the analysis including the multi-block mode
- instructions in Wiki on how to decode and analyze the data - need updating
- Software team: coordinated by D. Hamilton with contributions from Paul King, et al. - opportunities for additional people to contribute
- To Do (additional):
- thermal read back for light monitoring and curing (DSG working on it)
- LED driver cables needed for driving LED system - need assembly (originally DSG was supporting this)
- Software: need to test hcana with the firmware used in Hall C as well as the NPS firmware; multi-block mode main concern is not the FPGA but testing with V1190 - scaler injection and how it will be handled by the software in multi-block
- firmware on f250 need to be updated (Ben Raydo has updated firmware) to support cluster info on VTP
- cluster finding and LED
- Concern about cooling fans - what happens if fan malfunctions, e.g., how to replace it
- fix PMT that is not working well - need someone in charge of cosmic test
- need someone in charge of cosmic test - checking bases etc.
- installation in hall C: start on March 20 until July (see S. Lassiter installation schedule)
- Action item: make schedule for installation
- what people would like to do and who will be on site to do it
- time line matching with installation schedule
NEXT MEETING: THURSDAY JANUARY 5TH AT 9:00AM ET