Lennarz: Created page with "Present: MA, HH, KL, MR, RN, RC, AD, AL (recorder) = Second stage trip = HH fixed issue with dumping the data Question regarding the following scenario: If we are running n..."

2021-05-25T17:23:59Z

Created page with "Present: MA, HH, KL, MR, RN, RC, AD, AL (recorder) = Second stage trip = *HH fixed issue with dumping the data *Question regarding the following scenario: If we are running n..."

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Present: MA, HH, KL, MR, RN, RC, AD, AL (recorder)

= Second stage trip =
*HH fixed issue with dumping the data
*Question regarding the following scenario: If we are running normally and someone hits the stop button for analysis. When the trip happens, the stop is bypassed. -> We should clear when jumping to stage 2.
*Logistics: Do we scan the status register all the time? This would be required to not get out of synch.
*RN: This is Intractable 2 masters problem as bit can be set by EPICS or firmware.
*EPICS should reset bit as soon as status change is detected?
*MR: We should be constantly scanning already.

*Second failure scenario for which response needs clarification: If we get a trip condition and everything is connected, however, the FSD or timing system does not send a trip? What if external trip signal is not send?
*Then we would not go to stage 2 and we do not trip HV
*MR: This scenario could happen if the cable between FSD breakout board going into event receiver is disconnected or malfunctioning.
*FSD goes to RF switch AND event receiver.
*After stage 1 trip we should add a timer (~15us wait should be sufficient), i.e., if no response is received, system should trip.

*These 2 problems are the last issues HH needs to resolve, then upgrade should be finished.

= BLM HV trip (iseg) =
*Issue with BLM tripping during post-mortem test was never resolved.
*No repsonse from iseg
*We can try swapping the boards and see if trip still happens
*Swap boards and addresses, then re-test
*HH: Is there dial option on modules?
*MR/AD: This needs change in IOC shell. HH to confirm.
*Spare modules available? 12-16 channel modules purchase for ARIEL?

= E-hall work =

*AL, MA finished re-routing high-energy cables and HH shortened and terminated cables on Tuesday, which took about 6hrs. Labels were attached
*AL to attach new labels on roof. Also for LEDs. AL to send HH list with required labels after meeting.
*MA, AL to finish Ar connections next Tuesday and get leak detector from Rick.

= Fibre =
*MA to do baseline tests next week

= LED calibration =
*AL to write sequence of operation as base for EPICS implementation.
*Parallel ramp up of all LEDs with PMTs at voltage
*Compare detector response to reference and set tolerance.
*Make LED output vs detector response graphs

= AOB =
*RN: Are there blanking panels on MPS crate? -> Does not seem to be the case. We should get some.

MPS Minutes 20210520 - Revision history

Lennarz: Created page with "Present: MA, HH, KL, MR, RN, RC, AD, AL (recorder) = Second stage trip = *HH fixed issue with dumping the data *Question regarding the following scenario: If we are running n..."

Lennarz: Created page with "Present: MA, HH, KL, MR, RN, RC, AD, AL (recorder) = Second stage trip = HH fixed issue with dumping the data Question regarding the following scenario: If we are running n..."