Minutes of Jan 6 2020 ArgonCube2x2 Installation Meeting
· Attendee: Jim, Angela, John, Andy, Howard, Gary, Steve, Min Jeong and Ting
· News:
- There is a list of personnel with permit to access MINOS hall and MSB. The list includes people with long term permit and one time only permit
- We will update the list regularly and communicate to MSB for keys.
- Please send Ting and Steve names for MINOS access ahead of time preferably at least couple of days in advance
· Status of action task list:
- Steve to approve HA for magnetic cold removal
- Steve, Howard and Clarence to write HA for electronics removal
- Next week we start strongbacks inspection by Marcel Borcean's people from FESS
- John's crew to move the MINERVA and MINOS strongbacks to MSB early next week
- Jim and Angela to schedule the inspection which likely to be Tuesday Jan 14
- Andy also wants to participate the inspection as part of the safety review required by neutrino division
- We need more spaces in MSB for the inspection work -- Steve to make sure the MSB cleanup by end of this week
- The man-basket attached to the back of the MINOS steel moving cart needs to be inspected. The floor of the basket potentially needs to be replaced
- We still need to install whiteboard at the NEXUS/SENSI tent entry
- Gary and Min Jeong showed addition to the ArgonCube2x2 detector layout
- The support rail sections are shortened for both upstream and downstream MINERVA modules
- New additions of LAr purification skid and cryostat venting pipe
- There are discussions on the optimal location of purification skid which is now on top of the access platform.
- Current location is driven by the desire to shorten the vacuum-jacked pipeline from the skid to the cryostat vessel.
- It blocks access to downstream Minerva module.
- We should revisit the issue after Fermilab cryogenic design becomes mature.
· Decommissioning progress
- Minerva water target was filled before Christmas
- This week we start to have full crew available for work in the hall
- The MINERVA section of ceiling roof was removed
- Crane was served last week. No more noise. Runs much smooth now
- Most downstream area got cleaned up. We are in preparation to take the veto steel plate and scintillator plane out probably this week.
- Veto scintillator to be taken to Lab 8
- Expect to start to helium target next week.
- We could start disassembly nuclear targets in the week of Jan 20 and tracker modules last week of January
- We need the MINERVA strongback ready before end of the month.
- John or his delegate will send Ting short brief on weekly progress and plan every Friday so he can communicate to other experiments
· Minerva electronics disassembly startup
- Jim to arrange to have PMT storage box sent to MINOS hall before end of next week
- Howard plan to order some small boxes (18" by 18") this week for storing FEBs, cables etc.
- Steve suggested there are spare wooden boxes in MSB which could be alternative
- Those boxes are roughly 20" by 20" and 5" deep.
- They have covers.
- They are free and available now at MSB
- We have some discussion on where to store the MINERVA electronics. Steve and Jim propose to store them at downstream end of the MINOS hall
- Steve and Ting went to the hall after the meeting. The downstream spot looks pretty good.
- Howard to take a look in the afternoon
- It looks like we will have a team mixed with technicians and students/postdocs for the electronics disassembly work
- we expect to begin the disassembly in the week of Jan 20 starting from the 8 nuclear target modules
- We need couple of training sessions to go over the procedure with technicians and students and postdocs
- Ting will talk to Linda to see the availability of her technicians for a session late this week. If not, we will do this late next week as Howard is not available early next week
- We will discuss with Clarence on this too.
· AOB
- Jenny Thomas of UCL wants MINOS PMTs back. They are contributions from UK groups.
- Steve mentioned that MAGIS wants to start work in MSB soon. We should talk to Rob to understand their schedule
- ICARUS workers may start use MSB bathroom during their LAr filling period in couple of months
· No meeting on Jan 20 as it is MLK holiday.
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