POLAR-2 biweekly meeting

Monday 4 May 2020, 10:30 → 12:15 Europe/Zurich

Agenda:

- Going over action item list

- Getting back to the lab in Geneva

- Meeting with company for communication

Minutes bi-weekly POLAR-2 meeting

Attendance:
- Geneva: Xin, Johan, Nicolas, Jerome, Merlin
- Poland: Adam, Dominik, Agnieszka
- IHEP: Jianchao
- MPE: J. Michael, Jochen

WP0:
- Component list sent to ESA, no reply so far, Xin suggests Merlin to contact ESA again as a reminder (also regarding PEA + VHDL questions Nicolas)
- Still waiting for an answer from CSU about next meeting plan (discussion with Platform people is difficult), Xin suggests just to wait

WP1:
- Peltier element was studied, does not seem to be an issue, used many times in space, radiation is not a problem.
- Johan is studying the potential activation which would induce background from the Peltier
- Thermal simulations needed... we should probably start since the news from CSU on the final design might take a while
- Dampers are the last part of the detector to be designed, requires input from CSU on vibration and shock requirements

WP2:
- Xin comments that also the Neutrino group at DPNC has issues with the Citiroc, Jerome should contact Yannick about this
- Jerome is progressing with the noise issue for the Citiroc, next step requires tests in the lab which can commence next week
- GoWIN irradiation tests can start next week, Merlin and Jerome will work out the details on how to do this
- SiPMs (new type) should be delivered at CERN, Jerome will check with CERN when and how we can get these
- Johan has simulated radiation damage of FPGA (first results show there is no real issue), is working on the SiPM radiation right now
- Jerome is working on the documentation for the FEE and can probably come with an architecture soon

WP3:
- Dominik has sent the component list to Merlin last week, long list we could shorten it depending on how this procedure works (we have no idea yet)
- For the fibre communication boards from (Tasson) we should setup a meeting to progress as currenty we are not getting the answers we need, Merlin will try to fix that this week

WP9:
- Tomorrow Merlin and Jochen will have a meeting to discus the optical simulations of the spectrometer with Anna (studen at MPE)
- Jianchao is working on the simulations (GeCAM) and will collborate with Johan about this
- Jianchao is in discussion to optimze the design of the GeCAM detectors for POLAR-2, one possible improvement regards the readout electronics
- Merlin suggests that Jianchao checks if he cannot just use the polarimeter FEE with a slightly different trigger logic (would greatly simplify the design)

Other news:
- IHEP has some funding to hire someone to work on POLAR-2 (joined IHEP/Isreal funding)
- No news from Poland on the administration front
- Jiancho will help Nicolas + Dominik to get info from the website from Tasson