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PS/SPS User Meeting
PS/SPS User Meeting
Minutes of the PS-SPS Users Meeting held on May 11th, 2023
!IMPORTANT!!
Next user meeting: Wednesday May 17th, 2023 10:30 CEST
(Please note the different day of the week due to the holiday on Thursday!)
Location will be announced.
News from the PS & SPS Physics Coordinator (E. B. Holzer)
- Martin Jaekel has kindly agreed to chair the meeting today, because of the SPSC going on in parallel.
- New injector Schedule --> linked from the top of the user webpage https://ps-sps-coordination.web.cern.ch/ps-sps-coordination/
- User Schedules updated
โช Mon 15 May 7h30-8h30 no beam doe to PSB access for the leak inspection.
PS Machine Report (B. Mikulec)
Availability of ~94% Thu-Thu
Main issues:
- 2 electrical glitches brought down the cavities on Sunday
- Dedicated Linac4-PSB MD yesterday 8h-12h
- Time period to be excluded from downtime
- Phase oscillations affecting LHC-type cycles (since last weekend)
- Intermittent phase jump of 40 MHz cavity 77 due to bad cavity controller re-synchronisation โ> broken cable identified and exchanged
- Rephasing of C40-77 required
- Phase oscillations observed locally in open loop between cavity drive and return signals
- Removed 10 dB of attenuation in cavity return signal and exchanged another suspicious cable
Main activities:
- TOF
- A new version with optimized working point and 4 extraction bumpers is sent to nTOF since Friday (similar work was done for AD cycle) ๏ reduced losses in PS ring
- Yesterday evening, RP made calibration measurements for the nTOF RP monitors at varying beam flux
- m-TOF: timing modification on Monday to prepare for double-injection TOF cycle; will require some more modifications โ> ongoing
- 5-BP cycle revived for ion life-time measurements and a few observation issues being followed up
SPS Machine Report (Arthur Spierer)
- Very good overall availability this week
- SFTPRO
- T2/T4/T6/T10 : 25/55/113/31 at the moment of writing
- From 15th : 90/60/60 requested
- 50 and 100 Hz automatic compensation accelerated on GPU from Friday onwards.
- HiRadMat (Week 21)
- Access to TT61/TJ7/TNC will take place during the LHC access 8.30 to 12.30 on Friday
- AWAKE
- Proposal of compensation for MD to follow
- Next week:
- MDs and AWAKE continuing
- Coordinator next week: Carlo Zannini
Information on sequences:
- Thursday MD sequence:
- SFTPRO: 17b, LHCMD25: 20bp, MD1: 3bp
- 1xSFTPRO/32bp
- AWAKE compensation sequence:
- 2xSFTPRO: 17bp, 3xAWAKE: 6bp, 2xMD1: 3bp
- 2xSFTPRO/42bp
- AWAKE standard sequence:
- 2xSFTPRO/36bp
Safety / Radiation Protection (Please Add Your Name Here)
n_TOF (M. Bacak)
Physics:
- running according to physics programme in all 3 EARs
- 4 detectors in EAR2 broke on Friday. Spare parts organized and arrived on Sunday - tiny readjustment between experiments, wonโt affect our overall 2023 schedule
Beam:
- optimized proton beam since Friday (see PS report)
- on track with planning
East Area Beam Status (M. van Dijk)
T09: No users. East Target symmetry online monitoring test today for T09.
T10: No news, good beam for users.
T11: CLOUD run continued this week (until Wednesday). No issues from beam side. Access door issue being investigated.
East Area Users Tour de Table
T8: IRRAD / CHARM (F. Ravotti)
Running smoothly, no issues. Weekly access yesterday: removed the active experiment for LHCb, installed EP-ESE and TE-MSC experiment continue targeting very high proton fluence levels in IRRAD. R&D tests of new BPM prototypes also ongoing in IRRAD. In CHARM, TE-MPE experiment continue as weel as weekly tests of electronics components and sensors R&D (BE-CEM). Very good beam all week long and weekly intensity beyond target (see plot below):
Next access on Wednesday. We are happy to profit of the free T9 cycle to T8 whenever possible.
T9 Incoming: CALICE ScW-ECAL + AHCAL (Yong Liu)
Note Also outgoing main user for SPS North Area H2 beamline in week 19
- Latest status and plans (copied from the SPS-H2 status summary)
- Finished all packing in May 10
- Ready for internal transportation from B.887 to B. 157 (EDH request made)
- We will soon start preparations for beamtests at PS-T9 (schedule May 17 - 31) on transport is finished
T10 Outgoing: ALICE ITS3 (Paolo Martinengo)
Note Also incoming parallel user for SPS North Area H6 beamline for week 20
Test completed,more than 10 prototypes tested.
One telescope will be removed today/tomorrow (RP clearance pending), the second next week.
Quite stable beam conditions, often 3 spills per cycle, thanks.
T11: CLOUD (Pedro Rato)
CLOUD ended its current campaign Wednesday evening. After a challenging begining to the campaign trying to find the operating settings for our new equipment (FLOTUS), in the last week of the campaign we got some good results and found the optimal way to utilize it. Thank you for all the help of everyone in the PS team. We look forward for our next campaign CLOUD16 scheduled from mid September to late November.
AWAKE (Giovanni Zevi Della Porta)
May proton run started very well.
- Very simple setup (no laser and electron beams) allows to take maximum advantage of SPS extractions, even with interruptions
- Only one mid-day stop for hardware issues: 4 hours to replace plasma source power supply
- Thursday MD: compensation agreed as โextra AWAKE cycle for 8 hours (10.00-18.00) on Saturdayโ
Average beam for the first 8 days with protons (excl. Thursday MD):
- Have requested beam for 11 hours a day (Delta(FirstExtraction,LastExtraction)). Received 1000 extractions over 6.5 hours
Next week: โsemi-dedicated AWAKE runโ.
- We would be interested in reducing official hours from 16 to 12 (since anyway this is what we are able to cover), and increasing number of extractions per cycle.
Conditions will be different in July-October:
- We will need statistics, stability, and also breaks during the day for alignment etc.
Incoming: HiRadMat (Please Add Your Name Here)
North Area Beam Status
H2, H4, H6, and H8 Beams (M. van Dijk)
- H2 : Beam setup yesterday for muons, hadrons & high-energy electrons. Friday we switch to NA64e โfavoringโ configuration.
- H4 : No beam until Friday โ then startup with high-purity electrons.
- H6 : CERF installation went well and their run has started. Beam setup with them yesterday evening ok. Collimators are more open as shorter T4 target this year. REMINDER - please coordinate with CERF (Marco Tisi, Fabio Pozzi) for any downstream access. They have posted contact details on every access point door. They have a tight schedule with external users so will only take very short accesses.
- H8: Small issue with quadrupole and trim power converter that have not been used for the last user, but has been fixed in preparation for the next one.
Other Beams P42, K12, and M2 (M. van Dijk)
K12: Issue with CEDAR diaphragm motor. One cog on the drive shaft of the motor for the diaphragm became lose; this was glued in place and is holding since then. However, it now requires a manual intervention on-site for a change of the diaphragm setting. As going to operation is more important at the moment and repairing will most probably require taking the device out, this is postponed.
M2: The leaky inlet valve found on the CEDAR 083 has been exchanged yesterday. This caused a high consumption of He in the past weeks. Scan at 60 GeV/c is planned to be checked today monitoring the consumption. 190 GeV/c hadron beam was also preliminarily aligned with the AMBER setup on Tuesday. It will be re-checked after their survey measurement next week.
Last night after the restart of the BI crate some of the settings were not set correctly and the individual PMTs were not synchronised with the trigger. This was retuned by BI today morning.
North Area Users Tour de Table
P42-K12 and M2
K12: NA62 (Roberto Piandani)
On Monday we were able to fill our CEDAR with H2, the operation went smooth. The calibration and setup of the cedar is almost done.
We had time alignement of all the detectors.
Real data taking still not started, last minutes hardware problems with our straw tracker.
Feed back to the spill structure provided in the slides attached to this meeting
M2: AMBER (Maxim Alexeev)
Thanks to the provided 100 units of beam over the weekend we have successfully concluded the ECAL calibration.
Starting Tuesday our first priority is given to the CEDARs commissioning. We are in constant contact with Dipanwita on the subject and we had already:
- Had several visits by colleagues to fix the He leak. Presently a new input valve has been installed and the necessity of a bypass of a leaking servo is being evaluated.
- We had the support to steer the 190 GeV beam in the area.
- Yesterday it was found that the CEDAR PMT counts were not performing as expected (in CESAR RO). An intervention done this morning and it was found out that the crate was not reloaded. Fixed.
- Proceed with the commissioning.
H2
H2 Outgoing: CALICE ScW-ECAL + AHCAL (Yong Liu)
Note Also incoming user for PS East Area T9 beamline for week 20
- Status of activities during May 4-10
- Setup in H2 beamline: AHCAL prototype alone
- Finished energy scans with electrons and pion
- Electrons: 10, 20, 30, 40, 50, 60, 70, 80, 100, 120 GeV
- Negative pions : 10, 20, 30 40, 50, 60, 70, 80, 100, 120 GeV
- Finished positioning scans with 100 GeV muons
- Scanned the complete AHCAL transverse plane 72ร72 cm^2
- Inclined beam incidence: AHCAL rotated by 15 degrees
- Summary: finished all of our data taking plans for AHCAL alone as well as ScW-ECAL+AHCAL combined
- Selected shower events in AHCAL
- Pictures of the event display are with 50GeV ๐โ
and ๐โ
-
- beam data
- Ongoing PID studies with calorimeter(s) only
- Latest status and plans
- Finished all packing in May 10
- Ready for internal transportation from B.887 to B. 157 (EDH request made)
- We will soon start preparations for beamtests at PS-T9 (schedule May 17 - 31) on transport is finished
- Could we start a bit earlier (e.g. May 15) than the schedule?
- As currently no users at T9
H2 Main: CMS HF (A. Mestvirishvili)
Yesterday, safety inspection was OK. Area was patroled and around 19:30 we started alignment of our aparatus. Since with XTDV closed (muons) we were getting very low number of particles, so we decided during the alignment to remove it and here we are, ~15000 particles per spill, as it was asked. Beamvise we are OK, we are solving our minor internal problems with electronics
H2 Incoming: ALICE FOCAL - Week 20, Main (Please Add Your Name Here)
H4
H4 Outgoing: GIF++ (M. Jaekel)
Sucessful beam time, with most setups (8 in total) able to compete their program.
H4 Outgoing: RD51 (Yorgos Tsipolitis, Eraldo Oliveri)
- Good beam conditions, new obstacle helped significantly in the optimization of the beam for both, RD51 and GIF++
- All setup running. Most of the programs completed. Few missing measurements postponed to next beam period.
- Sharing of the beam with GIF++ running smoothly. Scheduling accesses at fixed times during the day helped everyone
- As usual, very thankful to all North Area teams and services for the prompt and professional support.
- Next Test Beam campaign: July 5-19
- Setups description and preliminary results attached to the indico agenda
H4 Outgoing: STRAW Tracker RD (Temur Enik, Katerina Kuznetsova)
- smooth datataking straws+MM (Tiger readout)
- success with integrating Timepix4 into reference tracker - many thanks to LHCb Velo colleagues
- very grateful to RD51 for testbeam orgranisation and help
- moved to H8 beam dump yesterday afternoon, re-cabling today
Note Moved to SPS East Area H8 Dump position in week 19
H4 Main: NA64e (V. Poliakov, L. Molina-Bueno)
Installation and commissioning is ongoing. Safety visit will be tomorrow 10:00 AM. Third magnet and Veto hadron calorimeter were installed and alignment.
H6
H6 Outgoing: CMS PIXEL (D. Lazic)
Very happy with the taken data. Practically the whole programme for the run was done. Looking forward to the next run in July.
H6 Outgoing: RD42 (Please Add Your Name Here)
H6 Main: CERF (Please Add Your Name Here)
H6 Parasitic: ATLAS ITK PIXEL (Andre Rummler)
Very successful two weeks as main user; four batches scanned; progress on DAQ. Two samples which arrived only on Monday morning were measured and are just now in the moment on their way to irradiation in Karlsruhe. Installed yesterday a fifth batch in the cold box with the following goals (all remotely; partially by expert returning to the US in one week):
- tuning tests with irradiated modules to follow-up features observed
- tests with new fw / TLU ID registration
- further tests with new eudaq2 based DAQ software
- observing thermal behaviour of irradiated quad module where we have improved the cooling during yesterdayโs access (application of thermal behaviour; fix of module mounting by expert from system test)
H6 Incoming: EP PIXEL - Week 20, Main (Justus Braach)
- Upgraded mechanics of telescope arms during this weeks MD
- Additional upgrade of scintillator PMT planes used for telescope coincidence to be installed during next weeks MD
- Regular installation of mechanics and electronics for testing small area DUTs on Wednesday morning
- Telescope alignment runs as beam returns after next weeks MD followed by a couple of accesses to adjust mechanics
- High-rate tests of DPTS small-area devices @ 0.25๐๐2
- In between detailed scanning of corner regions of Timepix3 iLGAD assemblies
- High rate tests of FASTPIX small-area devices @ (500โ1300)๐๐2
- Same beam settings as in previous high-rate beam times of 2022
- As before, ~2E6 / spill maximum rate, limited by radiation levels behind beam dump
- Will coordinate with beam line physicists and parallel users (ATLAS MALTA / ALICE ITS3) about beam settings
H6 Incoming: ALICE ITS3 - Week 20, Parallel (Please Add Your Name Here)
H6 Incoming: ATLAS MALTA - Week 20, Parasitic (Please Add Your Name Here)
H8
H8 Outgoing: LHCb VELO (Andrea Lampis, Martin van Beuzekom)
- Both TimeSpot and Timepix4 telescope groups were very happy with the beam conditions.
H8 Main: CMS MTD-BTL (Giulia Sorrentino)
Yesterday: succesfull installation of the setup (and some data already taken!)
This morning: setting up the beam
H8 Parasitic: STRAW TRACKER RD (Please Add Your Name Here)
H8 Incoming: TOTEM PPS - Week 20 (Please Add Your Name Here)
AOB
Minutes by the respective speakers, edited by M. Jaekel, E. B. Holzer, and M. Schwinzerl
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