AMBER PRM Weekly
List of identified participants:
Aleksei Dziuba, Alexander Inglessi, Martin Hoffmann, Maxim Alrxeev, Moritz Veit, Alexey Vorobyov, Eugeny MAev, Vladimir Ivanov, Stefano Levaratto, Karl Eichhorn, Eva-Maria Kabuss, Jan Friedrich, Oleg Kiselev, Fulvio Tessarotto, Igor Konorov, Alexander Vasiliev, Gerhard Mallot, martin Losekamm, Martin Zemko, Stefan Huber, Thomas Poeschl, Christian Dreisbach, Nelly Sagidova
14:00 → 14:10 Communication and Organizational Matters
Speakers: Aleksei Dziuba (NRC Kurchatov Institute PNPI (RU)) , Christian Dreisbach (Technische Universitaet Muenchen (DE)) , Jan Friedrich (Technische Universitaet Muenchen (DE))
Aleksei Dziuba: There was an email to group leaders to provide a list of AMBER paying members ASAP. It's important for the budget process for the next year.
14:10 → 14:40 Pilot-run preparations. Reports from groups
Speakers: Alexander Inglessi (NRC Kurchatov Institute PNPI (RU)) , Benjamin Moritz Veit (Johannes Gutenberg Universitaet Mainz (DE)) , Christian Dreisbach (Technische Universitaet Muenchen (DE)) , Evgueni Maev (NRC Kurchatov Institute PNPI (RU)) , Maxim Alexeev (Universita e INFN Torino (IT))
Report of run coordinator:
Alexander Inglessi:
- Huge progress for recent days
- Crate from EPDT for control system:
* Arrived
* To be placed outside of test area
* Cables are already deployed
- We have safety permission to operate big valve
- Shift scheduling:
* Jan Friedrich propose to fix shift team for first week
* Alexander Inglessi will send e-mail
* We have to identify a problem spots (missed persons during a night)
* Shifts are necessary for control COMPASS detectors (at least)
* Group tutorial for COMPASS duties will be very helpful (AI ask Jan Matushek for the help)
- AMBER logbook
* Though an instance of AMBER logbook was set up DAQ people propose for the pilot run still to use COMPASS one
* Doubling is hard (have to update all scripts)
* The data can be copied to a separate AMBER logbook after pilot run
* 'amber_' tag foк filtering AMBER shift comments
* COMPASS spokespersons (Bakur and Fulvio) agree to give credentials to AMBER shifters (who are not members of COMPASS)
- A dedicated meeting for planning of installation
* participants: Stefano Levaratto, Jan Friedrich, Alexander Ingless
* using zoom
* as early as possible (for example crain to install IKAR have to be ordered well in advance)
IKAR-TPC status:
Eugeny Maev:
- Safety elements, valve, disks are mounted
- 1 hour of pumping + washing with nitrogen
- filled with technical (not so clean) argon of 1 bar pressure
- big vale have some small leakage
* 1% pressure change for 1 days
* won't be a safety issue (Stefano)
* to be connected to some system to capture leaked gas
- HV tests fine
* 25kV checked (close to operational values of 30kV)
- readout plugged for a half of one anode plane (to the one with 2 alpha sources)
- noise of 20 keV (as expected)
- alpha-line is visible
* three alpha sources^ 1 on grid + 2 on cathodes
* not sure which one (very likely the grid one)
* important to see cathode line to understand a gas purity (stressed by Alexey Vorobyov)
* if put low HV to cathode the cathode alpha-line will disappear (proposed by Alexeev Vorobyov)
- Training of TPC
* washing with nitrogen helped so far
* we could do 1-2 l/minute of flushing
* Oleg Kisilev will bring a heating element (not clear when, as they are still in a delivery to GSI. Probably from Saturday to Monday)
* moderate heating jf 100 deg C as polycarbonate became unstable at 120 deg notto damage inne structure
* anodes themselves (but not support) were tested in PNPI (in Kudin's lab)
- Outgassing rate of flushing
* can be calculated by Alexander Vasiliev
* need to know volume, pumping speed
* data will be provided by Eugeny
- gas line preparations
* pumping of long live is useless as (10^-6 at the pumping edge --> 0.1 at other)
* only flashing
* fore vacuum pump (brought from GSI) will be suitable for this purpose
- Safety
* today safety group started to work
* will be installed next to TPC at CEDAR region
* safety system will control hydrogen / temperature / pressure/ provide slow release.
- Mechanical safety
* Information is provided by Stefano to a safety group
* no response from their side
* consider it as a positive sign
Silicon tracker
Christian Dreisbach:
- work started yesterday
- necessary cables are collected
- test setup in preparations
- next step to verify that all detectors are working
- Stefan Huber helps with stand-alone DAQ
- new fibers are in preparation (old 20m are measured to be short)
- Antonio is working on a support structure
- Old CEDAR cables for a temperature readout
- Don't expect any safety issues, though the setup will be checked
Trigger preparation:
Moritz Veit: (see slides)
- no major delays
ALPIDEs
Maxim Alexeev:
- Delivery of vessel not earlier 11 of October
- More precise planning, when delivery date will be more clear
- test a readout with a mosaic board
- Oleg Kisilev and Maxim Alexeev brought necessary components
- no clear way how to synchronize MOSAIC (no one knows, under investigation)
- we are waiting firmware for a New DAQ
- next week 1st tests with a real sensors
- cards will be also available (hopefully starting from 11 of October)
- help from GSI
* three pressons
* Oleg Kisilev is aware of planning (either starting from 11 either from 18th of October)
* to be decided when mode information will be available
- main detectors
* all letters for licencing are sent to CERN authority (Magnus MAga)
* Maxim estimates a licence granting in March-May of next year
* no visible problems, but rather a bureaucratic delays
* the decision about amount of chips should be done by AMBER management
- electronics for main DAQ (Igor Konorov)
* no improvement in qa sense of delivery time (still 52 weeks)
* likely the problem will stay for 2022 --> order ASAP!!
- Interfaces of ALPIDEs a modified for a high speed
14:40 → 15:00 Possible layouts and configurations for a spectrometer part
Speaker: Martin Kurt Hoffmann (University of Bonn (DE))
A long discussion about how to operate COMPASS
Conclusions made by Jan Friedrich (no objections from others):
- Likely the choice will be a scale down magnets
- don't move detectors
- it was agreed that 2 SciFi will go to a CEDAR region, but this still have to be clarified
- Other SciFi's should be in operational
- Martin will be available to check in simulations:
* a cut on trigger
* limit a Q2 range to see its impact
- 2 step analysis in a beginning (match track reconstructed with Si with track in COMPASS)
- efficiency of this track-finding to be understood
Alexey Vorobyov:
- worst case we will have 5% accuracy of Q2 calibration with scattered muon
Moritz proposed:
- Ask COMPASS to grant couple of hours to measure 100 GeV beam with cool plates (?)
- Christian can have a look on this spectra (but no time for analysis)
- Jan Friedrich will contact Jan Matushek, COMPASS spokespersons as well as target people to ask is this test possible
15:00 → 15:10 Computing resources for the pilot-run
Speaker: Aleksei Dziuba (NRC Kurchatov Institute PNPI (RU))
Aleksei Dziuba:
- What are our resources in terms of data storage and computing?
- Aleksei will contact Vincent and Catharina on a topic