MVTX Weekly Electronics Meeting

Thursday 21 Dec 2023, 13:00 → 14:30 US/Eastern

Joachim Schambach (Oak Ridge National Laboratory), Ming Liu (Los Alamos), Yasser Corrales Morales (LANL)

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13:00 → 13:20 Commissioning

BNL commissioning
8-stave telescope setup
Run setups
Software needs for QA/QC

Speakers: Cameron Dean (MIT), James Kelsey (Massachusetts Institute of Technology), Yasser Corrales Morales (LANL), Zhaozhong Shi (Los Alamos National Laboratory), Ming Liu (Los Alamos), Yuan Mei (LBNL), Yasser Corrales Morales (LANL), Joachim Schambach (Oak Ridge National Laboratory)

From Cameron:

I finished cleaning the cooling lines yesterday and we need to add 3cc of algaecide for every 10 gallons of water every 2 weeks so the next top up is on the 2nd of January. 

I updated the firmware on all CDUs to v3.2.5 which is supposed to solve the issue of the systems taking several hours to come online after a power cycle. 

I have noticed that DAQ1 and DAQ2 chillers seem to oscillate in flow rate by a couple of L/m every few minutes and they're lower in flow that anticipated since I left them running yesterday (from about 8.5 L/min to 5 L/min now). I inspected the filter for one of the DAQ1 cooling lines (channel 0) but saw no significant algae deposits so the filters aren't getting clogged. I was a little worried that pushing water through they system could've moved debris in the pipes near the cooling panels but that doesn't seem to be the case. 

Also, when I put the filter back, I didn't get the gasket in the right position and I cracked it in 2 when I put the housing back on (I could hear it snap but thought it might've been something else). When I opened up the main reservoir, a lot of air entered the system due to the gasket not being in the right position. I opened up again, removed the broken gasket and inserted a new one. There was no further air leaks after this. The take away message is that if the filter gaskets are not put back correctly they will break. Users can hear it break and not having the gasket will cause air to be brought into the system.

I may not have filled in other people on the MVTX about what Kin and I discussed yesterday afternoon. The container is what C-AD reads from and displays on their screens as plots such as the ZDC rate of number of bunches in the machine (the acronym escapes me just now, maybe GPM?). So the 48 containers are there for us to send information to C-AD for each stave. I assumed we would send a 1 or 0 for each stave when it was in auto-recovery or not, the same info that we pass to the WinCC displays in the sPHENIX control room. Maybe we must send a timestamp of when the stave was last “active”?

13:20 → 13:40 Readout, Trigger, DAQ

RU Firmware
FELIX Firmware
GTM
RCDAQ

Speakers: Yasser Corrales Morales (LANL), Joachim Schambach (Oak Ridge National Laboratory), Martin Purschke (BNL), Yasser Corrales Morales (LANL), Ming Liu (Los Alamos)

RU v1.22.0 improvements:

• Increased timeouts
• Local busy handlings through gating of trigger forwarding to ALPIDE
• Reed-Solomon encoding (RS[7,5]) of data path
• TMR of decoding/encoding logic
• FIFOs not TMR'd

13:40 → 13:50 Slow Controls & Detector Safety System

ALF, ITSCommLayer
WinCC
Cooling interface
CAEN interface

Speakers: Michael Peters (Massachusetts Inst. of Technology (US)), Yasser Corrales Morales (LANL), Joachim Schambach (Oak Ridge National Laboratory), Yasser Corrales Morales (LANL)

13:50 → 14:10 Online Monitoring

Decoder
QA plots
Other Online plots

Speakers: Cameron Dean (MIT), Jakub Kvapil (Los Alamos National Laboratory), Dr Joachim Schambach (Oak Ridge National Laboratory), Ming Liu (Los Alamos), Tanner Mengel (University of Tennessee (UTK)), Dr Yasser Corrales Morales (LANL), Zhaozhong Shi (Los Alamos National Laboratory)

14:10 → 14:20 AOB