Overview of vacations / absences

Who When (inclusive dates) Contact channel
Paul 20.08 - 30.08 Mobile (only if really necessary)
Cristóvão 26.08 - 30.08 CERN phone/email
Markus 27.08 - 06.09. CERN phone
Sarah 27.08. - 21.09. None
Cristóvão 05.09 - 06.09 CERN phone/email
Cristóvão 16.09 - 20.09 CERN phone/email
Paul 18.09 - 23.09 Mobile (only if really necessary)

Overview of actions

ID Who What Deadline Status Details
1 Cristóvão Find a GEANT4 expert asap Done J. Apostolakis contacted and some feedback received. Cristóvão is in contact with John Apostolakis
2 Paul Send the technical drawings of the telescope rails / brackets to Markus asap Done -
3 Paul Manufacture supports for the absorbers asap Done Mounted
4 Markus Order absorbers asap Received -
5 Markus Find scintillators asap Done do we want to ship the big block to DESY?
6 Paul Material for the dark box asap Done PVC (or similar polymers) can temporarily be used in the beam area
7 Markus Build the dark box asap Done  
8 Paul Check if we have to use the BRM or if a smaller magnet is available asap Done. No other magnet will be available.
9 Cristóvão Send pictures of ISOTDAQ scintillators to Paul asap Done  
10 Markus look for 5 more MMFE8 cards asap Arizona contacted. Not looking good so far Right now we have 4 cards.
11 Markus build more MicroMegas ventilator assemblies asap Done  
12 Cristóvão Estimate the amount of MicroMegas gas needed in August and October asap Done ~900 l in August; ~1700 l in October; gas mixture 93% Argon, 7% CO2
13 Paul Order MicroMegas gas for August / October asap Done Ordered ~3000 l of Ar:CO2 93:7 (delivered) and >800 liters of Ar:CO2 70:30
14 Paul Check the DESY Lead glass calorimeter asap Done Tested one calo, it works well. Statistical analysis by a student ongoing. More calos available, but with incompatible cables -> replacement ongoing
15 Cristóvão prepare the spare SBC asap Done  
16 Cristóvão contact the USA team and give them homework (e.g. calculation of synchrotron radiation, MMFE8 temperature read out asap Ongoing  
17 Paul contact the NED team and give them homework asap Started discussions and questions on showers and the setup  
18 Markus Plan the transport of the material (in particular MMs) to DESY asap Done  
19 Cristóvão Finish integrating the MM into TDAQ asap Done but missing state machine implementation  
20 Cristóvão/Paul Set up the user/analysis accounts September Done Will use Jupyter at DESY. Accounts are prepared, credentials are with Paul. Access to Jupyter notebooks works.
21 Sarah Coordinate the production of the banner October Done 2 banners have arrived at DESY
22 Paul Organise safety half day asap Almost done Only missing location info for cryo and some details for radiation (DESY school lab).
23 Cristóvão Test and get to run the "Split DAQ" (GUI running on PC but rest on the SBC) asap Done Thanks to Louis' help
24 Cristóvão/Markus Fix the busy logic during the TDAQ configuration steps 2020 Postponed to 2020  
25 Markus Find a VMEbus ADC 2020 Postponed to 2020  
26 all define microMegas and MMFE8 configuration for the DESY setup asap Done -
27 Markus, Jorgen equip a chamber with fans and the MMFE8 that we got on loan on Friday asap Done -
28 Jorgen, Markus get a CAEN HV power supply from the pool asap Done Jorgen/Cristovao: Specify the type of PSU. Markus: Rent the device
29 Jorgen, Markus install in RD51, test electronics and calibrate asap Done -
30 Jorgen, Cristóvão test with vmmChamber monitor program asap Done -
31 Jorgen, Cristóvão (re) install online graphical monitoring of currents in the microMegas (spike detection) asap Done -
32 Jorgen, Cristóvão understand noise events asap Most likely the thresholds were too low -
33 Cristóvão monitoring of temperatures in the VMMs asap Ongoing/Done Fallback solution of using oscilloscope/multimeter. Must focus on other points first before looking into automated temperature monitoring
34 Jorgen, Cristóvão define/develop method on testing VMM threshold settings asap Done -
35 Jorgen, Cristóvão adapt event display to VMM based readout asap Done -
36 Jorgen, Cristóvão adapt tracking monitor asap Ongoing -
37 Jorgen, Cristóvão make UDP fragment format RCD compatible (GetNextFragment and RCDRawEvent) asap Done -
38 Paul, all low energy calorimeter 2020 TBD Contact E. Auffray re. old crystals of L3 and PANDA
39 Markus, Cristóvão, Paul Discuss and complete the shipping list End of July Done see also: https://espace.cern.ch/project-blfs/_layouts/15/WopiFrame.aspx?sourcedoc=/project-blfs/Launch%202019/shipping%20list.docx&action=default
40 Markus Buy 5 Lemo cables (100 ns) asap cancelled cables would have been delivered too late
41 Paul Measure the magnetic field inside of the dark box when the BRM is on asap Done See Mail from 05.09. "PMT and magnetic field"
42 Paul Provide long (5m) HDMI cables for the MMS (or ask Markus to buy them) asap Done Five pieces ordered and delivered
43 Cristóvão Contact Sune re. influence of magnetic fields on PMTs asap Tests Ongoing -
44 Paul, Markus Send the MM box and the malfunctioning DWC to CERN asap Done Box is packed and closed. Markus will prepare a shipping request in EDH
45 Cristóvão, Markus To be shipped to DESY: HV-PSU, 6 channels, 2000V, 2mA with GECO monitoring, Screws for the MMFE8, cotton gloves asap Done -
46 Markus Make aluminium rails for mounting the DWC to the MM frame asap Material has been collected and is ready to ship to DESY. Only mounting holes remain to be drilled -
47 Cristóvão, Markus Clean the zebra connector, order more if necessary asap Done Had discussion with Givi about details. Also received a set of 10 clean ones to use in case of need
48 Markus, all Order thinner tungsen slabs if required asap Done 15 slabs of 2 x 50 x 50 mm ordered
49 Sarah Take care of Facebook page asap Ongoing Markus to approve requests with answered questions, Paul and Cristóvão to answer questions; check once per day
50 Paul, Barbara Expert electron therapy asap TBD Look for a specialist for electron therapy as a cancer cure at DESY
51 Paul Room(s) for data analysis asap Done Booked for the whole programme. Guest office in Bldg 1d, Ground floor.
52 Paul Alternative for webcams asap Done Got a MacBook, installed Vidyo/Skype and created a Vidyo room for the event
53 Paul, Markus Volunteers for data analysis asap Ongoing Volunteers are currently signing up, 20.10. - 25.10. fully covered, 26.10. - 28.10. still missing: https://confluence.desy.de/display/DESYTB/Data+Analysis
54 Markus DAI San Diego after receiving invoice TBD Please submit DAI with invoice and take care of payment
55 Markus New BL4S flyer after receiving modified version from Ewa TBD Please forward the flyer to DESY and LNF as well as Sascha for collecting comments/signing it off
56 Cristóvão/Markus Purchase/build hygrometers for measuring humidity of Micromegas asap (for 2020?) TBD Minimum of 2, a few extra might not be a bad idea for extras and monitoring individual chambers

Minutes of 3 June (taken by Paul)

Particle Peers

Choices to take:

  • Materials / Thicknesses of absorbers
    • Technical drawings of rails
    • Brackets available or technical drawings
  • Telescopes
    • Send around specs
    • Readout time
    • Number of planes
    • Simulation @Markus finds a G4 expert
  • Data storage
  • Analysis?


  • Analysis
    • EduSWAN (global SWAN, Jupyter notebooks)
  • Data Storage
    • Options: NAF / desycloud / CERNbox
    • What do we store?
      • Raw?
      • Root?
    • Backed up please (NAF, desycloud, CERNbox)
    • Data transmission?
    • Copy data on a daily basis / convert to ROOT
      • Script executed by students?
    • Open access data storage?


  • Maybe DESY computing accounts
  • CERN accounts?
  • Functional accounts for the students if (edu)SWAN will be used
  • 4 PCs for analysis

DESY Chain:

  • To decide:
    • Scintillation materials
      • Markus contacts experts/companies
    • PMT
      • which are the relevant wavelengths -> 400 - 550 nm for EJ-200
      • anything against the available 40 mm PMTs? -> No. Sune recommends using them
  • To design:
    • Dark box
    • Optical coupling
      • Grease? Air? Optical gel?
      • Do we need a light guide? -> not for the organic scintillators. Decision for crystal pending
  • Simulation:
    • G4 simulations: Does the scintillator (<10 cm) affect the electron beam

  • Tracking (energy measurement):
    • In case of BRM usage:
      • Setup: Black box → 2-3 planes particle tracking (alpide?) → Magnet → MicroMegas → Trigger
      • @Paul ask Norbert for Laura’s beam support (tracking before the magnet)
      • Scintillators:
        • Large tails?
        • Mechanical support?
        • @Markus sends pictures around
    • In case of another magnet materializing:
      • Difference:
      • Potential of using DWC in case of not having Alpide ready

  • Micromegas:
  • Lead glass calorimeter:
    • Check DESY calo @Paul contacts Jan/Norbert
  • VME readout:
    • SBCs:
      • One is at DESY
      • Spare will be prepared at CERN
    • Alpide:
      • Integration: @Paul contacts Yi/Lennart

  • Homework for students:
    • Calculate synchrotron radiation → does it affect the experiment?

---++ Layout of the area:

  • Challenges:
    • Moving the telescope (Monday morning it has to be reinstalled at the original position)
    • Material budget in front of the shower telescope / remove black box for shower experiment?
    • Different time slicing? Do scintillator experiment first and then the shower
    • Alternative setup: BRM → 1x MicroMegas → Shower telescope (can be moved out) → 1x MicroMegas


    • Discuss spares (mechanics, detectors)
    • Analysis volunteers:
    • Find volunteers (J.H. Arling, Lennart, Yi, Uwe, Mengqing) @Paul
    • Use of Jupyter notebooks with ROOT → C++ or python? @Cristovao/@Paul

-- MarkusJoos - 2019-06-13

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Topic revision: r61 - 2019-10-09 - PaulJeanSchutze
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