Minutes of the MADMAX CERN Meeting

Presents: A. Dudarev, B. Rae, B. Majorovits, C. Krieger, D. Kreikemeyer, D. Strom,  J. Bernhard, L. Rowland, J M. Van dijk, P. Pralavorio, X. Genillon, A. Barrato Roldan, A Amamou, J. Bremer, J. Schaffran, N. Guillotin, T. Koettig

1. Introduction (J. Bernhard)

• Restart of beam commissioning confirmed : 17-04.2023
• Beam interlock test : 05-04.2023. During that day no one can access the zone but the work can continue (magnet and set-up can still run)

2- Water (A. Amamou)

• 20.02.2023 : Restart of the cooling tower --> raw water
• 22.02.2023 : Mixed water (18/22 deg C) available while waiting for chilled water
• 03.03.2023 : Chilled water availability 

3- Cryogenics of the Morpurgo magnet (N. Guillotin)

• YETS 2022/23 : Mandatory migration CPC5 to CPC6 for North Area Cryogenics Infrastructure including
  pistons process compressor dedicated to ATLAS H8 (Morpurgo), with development of a new process control of
  the helium compressors
• 20.02.2023 : Start of cryo circuit conditioning on process compressor side
• 22.02.2023 : Start of commissioning of the new process control of the compressor using mixed water
• 03.03.2023 : End of commissioning of the new process control of the compressor. 
• 03 or 06.03.2023 : Effective cool down start with process compressor connected to the cold box and Magnet
• 27+/-1.03.2023 : Expected Cryo OK for the Morpurgo Magnet at 4.5K with Liquid Helium
• 28+/-1.03.2023 : Magnet can be ramp up at 1.6 T
• The margin mainly stands in the way we could potentially take less time for the compressor process control
  commissioning
• Set-up a team Nicolas / Bastien / Pascal to monitor the progresses of the cooldown and adjust the time MADMAX should be ready to take data.

4- CB100 tests (B. Majorovits)

• Will use a much simpler DAQ system than last year consisting in a single network analyser with 90% dead time. 
• If 20 days at 1.6 T, could take 2 days of effective data taking, which give us a sensitivity slightly above the CAST limit (presently the world best limit) --> The earlier we start the better. Could run over Easter to end before beam commissioning 17.04.2023
• SPSC meeting 07-08.02.2023. Waiting for the referees to contact us
• In case of problem of data storage, TBs could be made available by CERN

5- G10 cryostat mechanical tests (D. Kriekemeyer / T. Koettig)

• G10 cryostat to be delivered at MPI mid-Feb. Then send to CERN to be tested in the cryolab
• Open points from last meeting (HE dewar transport, return line, ...) solved by the cryolab
• Discussion to  be organized by Maarten, to move the concrete block in February (inc. Michael Lazzaroni )
• Note : Sylvain Girod is the TSO of the area
• Cryolab is waiting for the MADMAX budget code

6- Safety (L. Rowland)

• Meeting to be organized by Laura to understand the details of the test this year

7. Next steps