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The template for the minutes of meeting for the weekly PS & SPS users meeting can always be found using this link:
https://codimd.web.cern.ch/Q1aW0kvRStitlMtDow6XTg?both
Please pre-fill them before the meeting with a summery of your activities!
Physics Coordination schedule:
E.B. Holzer, M.R. Jäkel
User Schedules v2.0.2 (for most of the lines until end of August) released: see User Webpage
Please get in contact, if you want to take one of the week still free before June - Tanja (tetiana.shulha@cern.ch) is collecting all requests.
2024 injector schedule released EDMS 2872566
2024 approved LHC schedule EDMS 2872429
Proton Run 2024
Ion Run 2024
Reminder: Beam time exceeding the limits of 2 weeks PS beam time and 1 week SPS beam time (added proton and ion beam time!) per year need the approval of one of these CERN committees: SPSC, LHCC, DRDC, INTC, RB or IEFC. Consider joining a DRD collaboration, if you require more beam time.
Upcoming MDs:
Review:
Outlook:
We cannot inspect your experiment if you don’t press submit on your ISIEC form! Please double check you have actually submitted it.
Here is the submission link (CERN login required before accessing the form): https://ep-th-safety.web.cern.ch/form/isiec-form-v2
Hot summer weather has arrived. There are specific rules for how to dress in experiment areas, they are defined in EDMS 2193556. In summary:
If you have to wear safety shoes (i.e. all beam line zones), long trousers are required.
Short sleeves are tolerated, provided there is no risk of upper body injury - for work not work involving a
risk of projectiles or working in proximity to sharp edges
Days without beam during technical stop have been used to set-up EAR1 and EAR2 for long measurements. Even thought few issues with detectors it was possible a quick restart on 14.06. Preliminary test with a longer nominal bunch (44 ns) have been performed, but the beam size need some adjustment; optics will be investigated along next week.
Smooth data taking:
EAR1: Er(n, g)
EAR2: 97Mo(n, g)
NEAR: Activation measurements
On call number: 67500
General: Following the TS the position of the proton beam on target for the east beams was quite offset which has been corrected. The correction was quite strong, the cause is being investigated.
T09: Good operation without issues.
T10: Good operation.
T11: No user.
Short irradiation week due to the TS1. Performed experiments requring lower intensities than usual (HV Pover supply in CHARM and BI calibration in IRRAD). All other long-term experiments in IRRAD continued. We run with 60E10 pps for most of the days. Cumulated ~1.5e16 p/w and reached TID below 200 Gy as requested by the CHARM user (see plot below).
Beam center within +/- 2mm >63% and >81% of the time on the X and Y axis respectively. Access on Wednesday went well, new experiments installed. We run until next week.
OREO AND e+BOOST weeks were swapped, as both of them are experiments of the
same team
The quality of the beam was very good and very stable and allowed us to acquire good data to fully characterize OREO, a full prototype of electromagnetic calorimeter based on oriented crystals
The axial orientation of the calorimeter may improve the electron tagging performance
Yesterday we did the setup change and started the e+BOOST week. As agreed with Alex of the Safety dept. I sent him a couple of photos about the minor changes we did to our experimental setup
In the following week we plan to orient and test different samples of oriented crystal for a positron source based on oriented crystals
See above
Preparation status
Other items
Taking data.
Installation next Wed. Beam file as in April (+10 GeV hadron beam).
On call number: 67500
Target Sharing, from Wednesday, 19.06.24:
T2 | T4 | T10 | T6 |
---|---|---|---|
30 | 42 | 21 | 30 |
H2: Smooth operation (limited to 150 GeV/c).
H4: Smooth operation.
H6: Good operation.
H8: Good operation when beam was available.
M2: Good operation in general. On Wednesday there was a small error to move one of the absorbers but this got fixed without intervention on site.
P42/K12: While beam was there, rather good operation. Another issue with MNP33, which the experts investigated in detail during the MD time. They were unfortunately not able to reproduce the problem, but will have a close look. On Saturday, during a short window of beam availability, the T10 target intensity monitor calibration was completed.
Several problems with NA62 spectrometer magnet (MNP33):
Johannes recommended not to do “set to beam ref” on Cesar control panel but rather call CCC and ask for the magnet piquet to investigate when we experience the problem.
Piquets were called several times and they are still investigating. Since last MD we haven’t experienced any issue.
Sometimes we needed to decrease the beam intensity (using a smaller hole in the P42 tax) to calibrate our Cedar, after an intervention to replace some on-board electronics. The procedure requires up to a couple of hours with stable beam.
The calibration was successful but we recently found out that it might need further optimisation, so we might request again to decrease the intensity on T10 in the next future.
Start of physics data taking on 09.06
First period (W01): 250 GeV/c on Hydrogen target (~8k spills)
End of W01 tonight; switched to 80 GeV/c on Hydrogen (W02) requires ~15k spills
currently largely delayed in measurement plan due to issues on beam (as can be seen on attached figure). With the start date on 09.06, no spare day to fulfill physics goals presentet to SPSC are left and for each beam day in average 3k spills are required.
investigate all possible options of increase number of beam days for the measurement (e.g. also asked to shorten/ move dedicated MDs)
Yesterday we finished our beam run on H4. The part of our detectors were dismounted. We recorded only 2.2x10^10 positrons on target due to lack of beam significant time after long stop.
Beam arrived as expected yesterday around 6:30
NP04 TPC working well, nice events seen online
Collected 300k beam triggers 8pm-8am at +7 GeV/c
A very good start for the ProtoDUNE II programme!
Setups: 8 setups (see attached slides for more details)
SETUP A, B: PICOSEC (F. Brunbauer, K. Gnanvo)
SETUP C: MINNICACTUS (P. Schwemling)
SETUP D: STRAW (T. Enik, K. Kuznetsova)
SETUP E: DRD1 GEM/VMM3a Tracker (K. Floethner)
SETUP F: uGroove - USTC (Y. Zhou)
SETUP G: MPGD HCAL (L. Longo, A. Pellecchia)
SETUP H: FCC-muons (G. Cibinetto)
Beam Conditions: High Rate (as much as permitted by RP) Muons, Potentially few shifts (8h) high rate pions (to be confirmed).
Goliath: not required.
Installation: Wednesday 26 starting from 8am. Beam pipe to be removed from all area. Thanks in advance for all the help that we will need.
Flammable gases: same as in April test beam (see attached slides for more details).
Survey: Planned for Wednesday early afternoon.
Safety Visit: Wednesday 4pm. Safety for Flammable gases to be agreed.
Preparation proceeding smoothly, 8 setups
Not much data taking due to the unfortunate circumstances.
Despite the 2 weeks of high rate available in H6 (weeks 34/35) already well served with weeks 31 and 39, and anyway reaching the limit in terms of available person power and data-analysis bandwidth.
But possibility to run parasitically to CMS PIXEL is currently being discussed.
We have since one week ongoing DAQ development with experts on-site. Very useful investigation of desync ongoing which hopefully will make our data taking more efficient in the future. But at least a few more days needed as unexpected desync sources were found. A “simple” batch consisting of 2 ITkpixV1.1 SCCs and two quads is mounted which requires only moderate cooling. Currently multiple ITkpixV2 are in work (one wirebond rework at University Genova; one currently in transit) and will be inserted as soon as possible. Switch to irradiated batch afterwards; likely only next Wednesday as it requires a long access to install the secondary cooling circuit.
It has been a quite poor week for UA9/STI.
Further to the Swissgrid and beam problems, we had no trigger until Monday morning because a cable had remained disconnected after an intervention in the rack room few weeks before, therefore we could not even profit of the degraded mode beam delivery.
Since yesterday evening we are taking data.
We had some exchanges with PAN representative and Maarten helped finding a possible way to run together with them. Thanks a lot!!
We will be happy to have some extra time in week 26 in order to recover a bit the delay accumulated last week, and to be ready with the detector in October.
We have planned a longer intervention (~4 hours) with the EHN1 Survey group next Wednesday for the alignment of our alignment mirrors.
This time should go on top of PAN installation time.
Minutes by the respective speakers, edited by E. B. Holzer, M. Jäkel, T. Shulha, and M. Schwinzerl