Minutes of the PS-SPS Users Meeting held on 1st of July 2021
Injector Schedule and User Schedule (E. B. Holzer)
- Following magnet damage in the LHC, the LHC start-up 2022 was shifted back by 3 weeks, as was the start-up for all the injectors.
- The updated injector schedule presented on June 11th
- à The AWAKE and HiRadMat schedule had to be adapted
- Other secondary beams user schedule not affected.
- East Area renovation project advancing ahead of schedule – primary beams to IRRAD/CHARM advanced by 4 weeks.
PS Machine Report (D. Gerard Cotte)
- Currently low intensity beam to the SPS - up to 2-5x10^12 p/p. Yesterday intensities reached 1.2 x 10^13 p/p. Injection losses optimised. High energy losses are an issue which is currently being worked on.
- nTOF setup reached 7 x 10^12 p/bunch
- East Area setting up ongoing. Settings have been generated.
- All ok until now.
SPS Machine Report (K. Shing Bruce Li)
- Beam commissioning has been finished.
- Ran through the scrubbing.
- Currently in hybrid mode of setting up beam towards the North Area, finishing scrubbing runs and HiRadMat cycles. AWAKE, SFTPRO, HiRadMat cycles ready.
- AWAKE- beam intensities low at 1.4E11 ppb. Beam has been sent to the experiment for tests during beam commissioning. Biggest limitation is the maximum attainable cavity voltage. First awake delivery foreseen for 21st July.
- SFTPRO – Intensities are up to 5E12 for the moment. 50 Hz correction has been setup. Currently steering to targets. All instrumentations not fully operational. BSMs in front of the target not giving any signal. Had access this morning. Issue has been identified and fixed. Beam will be taken this afternoon to check again. Activities are being co-ordinated with North Area activities. North Area physics to start on July 12th.
- HiRadMat – Machine has been scrubbed well. Limitations were mainly vacuum in different sectors and MKD. More than 1.2E11 ppb at 440 GeV at flat top. HiRadMat is scheduled for August 9th.
- J. Bernhard updated for the North Area – Delays in closing the zones due to various vacuum issues in M2 and P42. They have been almost fixed. Commissioning should start next week. He reminded that for access to the experimental zones for next week it should be discussed with the responsible beam physicists.
nTOF (A. Mengoni)
A. Mengoni presented the status of nTOF. No showstoppers. Expecting beam from July 19th.
NA users tour de table
J. Bernhard introduced the new team of BE-EA-LE and presented the respective contacts. He reminded that a technical meeting will be held 4 weeks prior to each beam time with the users to discuss their setup, installation etc.,
- H2 : CMS OT (D. Lazic)
- Run has been postponed running in parallel with NA61 as there were delays in the delivery of the circuit breakers for the M1 magnet.
- The magnet can be powered now. Working on the commissioning.
- Instabilities detected in the cryo circuit. Reason not known yet. Currently being investigated.
- The devices are ready.
- Scheduled to arrive at CERN on July 12th.
- Issue with control rooms. Foul smell detected. Three interventions have been done but has not been fixed yet. HSE has been contacted to check if human occupation is allowed in such conditions. N. Charitonidis confirmed that the issue is being followed up and a ticket has been created.
- No power in the test beam area. Planned to restart on July 7th. N. Charitonidis confirmed that this issue is also being followed up. The delays in the restart occurred due to delays of an external company.
- H2 : NA61 SHINE
- N. Charitonidis mentioned that the TPC modification are ongoing. Trajectory of the beam has been cleared.
- Two vacuum tubes still to be installed.
- Work is on track for start on 12th of July.
- H4 : GIF / RD51/ CMS ECAL
- GIF à
- M. Jaekel presented the different user schedule.
- ATLAS RPC will not be ready to participate. CMS CSC has been added in their place.
- CMS-DT installed in the extended part.
- Will be ready by July 12th morning for the setups.
- Neutrino platform has offered a control room where 4 people can hosted withing the EHN1 building in addition to 4 people in the GIF control room
- RD51 à
- E. Oliveri mentioned that next week installation will start according to the free access.
- New gas infrastructure with temporary installation has been agreed with safety.
- Survey is planned for Friday July 9th.
- July 9th 4 pm safety inspection is planned following which they will be ready for July 12th beam time.
- CMS ECAL à To be discussed next week.
- H6: ALICE ITS3 / ATLAS MALTA
- ALICE ITS3 à
- F. Carnesecchi mentioned they are ready and are scheduled to be installed on July 8th. Access to be planned with the beam physicists according to the beam commissioning plans.
- ATLAS MALTA à
- A. Rummler mentioned they are installed in the last position of H6A.
- H8: Medipix / ATLAS RPC / LHCb / CMS MTD
- Medipix à
- B. Ludwig Bergmann mentioned they will be at CERN middle of next week and will start installation on July 11th to be ready for July 12th.
- Beam trigger to be made available from the scintillators. A. Gerbershagen will help co-ordinate this with SY-BI.
- ATLAS RPC à
- A. Rummler – All is on track. Gas will be sourced from GIF for ATLAS RPC. This is currently being confirmed.
- LHCb à
- H. Schindler confirmed they will run in parasitic mode. If there is access next week they will use it to install some setup. This will be coordinated with the responsible beam physicist.
- CMS MTD à
- D. Lazic confirmed they are ready. Meeting with M. Lazzaroni has been done to plan the installation. Work is on track.
- K12: NA62
- H. Danielsson confirmed that they are ready for data taking.
- Bulk of the work has been done, for the rest some access is required. J. Bernhard confirmed that this week access is free and for next week access after 16:00 / 17:00 will be ok.
- Patrol is scheduled to be done on Monday July 12th morning.
- E. B. Holzer mentioned that the sypercycle has not been decided yet.
- In the beginning the standard as before will be used. It will be confirmed next week.
- Information on Page 1 not available in the control room. J. Bernhard will follow up on this.
- M2: COMPASS
- J. Matousek confirmed that the target holder vacuum problem has been fixed.
- The Indium seal closing the chamber was not perfectly tight which has been fixed.
- The target was loaded yesterday. Currently the target is being cooled down.
- Spectrometer commissioning is ongoing.
- Next week the beam telescopes will be installed when access is possible with the beam setup and tuning.
- Start of physics data taking is foreseen from July 26th.
Supercycles, Wobbling, Target intensities
More news to come next week.
Safety
L. Giulio presented the safety implications in the control room due to COVID related restrictions. The maximum number of people/control room has been calculated and is displayed on the doors of the control rooms. The 2 m distance should be respected. Masks and disinfectant wipes will be distributed by CERN. The material will be distributed to 1 contact person per experiment. All rules summarized in EDMS 2602076. She confirmed that the Air conditioning is off in the control rooms but the ventilation system is on. She also reminded the users to send the ISIEC forms.
E. B. Holzer reminded of the COVID self-testing campaign to be put in place in EHN1.
Minutes by D. Banerjee
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