Choose timezone
Your profile timezone:
PS/SPS User Meeting
Description
Minutes of Meeting (please pre-fill before the meeting): https://codimd.web.cern.ch/Q1aW0kvRStitlMtDow6XTg?both
PS/SPS User Meeting
Minutes of the PS-SPS Users Meeting for Week 23 held on June 8th, 2023
Next user meeting:
For week 24 on Thursday, June 15th, 2023 10:30 CEST
Meeting room 874/1-011
News from the PS & SPS Physics Coordinator (E. B. Holzer)
Target intensities T2 / T4 / T6 = 100-105 (until July 5th) / 47-51 / 60
Wobbling change in week 22 for T4:
- H6 and H8 polarity change for higher energy beams in H8 for SND next Monday, back on the Wednesday after (2d effective change).
- Wobbling setting to keep beam quality and intensity for NA62 as requested.
IEFC tomorrow Friday June 9th at 10:00 https://indico.cern.ch/event/1291522/
See this codimd location from Tuesday morning onwards for the News from the FOM:
Week 23
East Area beams will be stopped on Wednesday June 7th 9:00 for about 2 hours to revert the T9 configuration
Beam stop (PSB, PS and SPS) Thursday June 8th from 7:30 to about 8:30/9:00 for scheduled Booster intervention (QFO11 leak inspection) and additional interventions in the PSB, PS and SPS
Continued empty-bucket channelling test on the operational beam (improve the spill structure) either on Tuesday or Friday of week 23
MD planning for the comming weeks:
This week (week 23):
- PSB: short parallel MDs
- PS:
- parallel MDs
- Friday June 9th parallel MD for high proton flux (up to 2.2e12 pps) on nTOF target
- SPS:
- Short parallel MDs (Monday, Tuesday and Thursday)
- Wednesday dedicated MD: second crab cavity
Next weeks:
- Week 24:
- postponed to week 24: high intensity LHC beams in the injectors, in order not to loose the conditioning (reduction in duty cycle for the FT users)
- might be anticipated by one day wrt the schedule --> LHC MD starts at 6:00 on Wednesday and takes until Sunday; the beams need to be prepared in the injectors on Tuesday
Preliminary Planning of the Techincal Stop week 25
The final times will be communicated at the FOM on Tue June 13th!
Beam stop (cool-down) times as a function of beams and areas:
- 19/06 at 7:00 am: stop of TOF, ISOLDE, SPS North Area (SFTPRO), PS EAST
- 20/05 at 4:00 am: stop of all other proton beams: AD, MD, COAST
There are big uncertainties with respect to the time when the beams will be ready again for the users!
Around 16:00 to 20:00 the beams could be back to the users. The beam quality might have to be worked on.
Foil measurements at the SPS targets might delay the beams to the North Area for around another 4 hours.
PS Machine Report (A. Lasheen)
- Excellent availability from the PS this week
- TOF
- Dedicated cycle with 28ns bunch length at extraction ready.
- EAST + Parasitic TOF
- High intensity parasitic TOF adjusted to 570e10 p+. EAST bunch blown-up in the longitudinal plane but still in good shape. Spill quality to be verified.
- Parasitic TOF with 28ns at extraction degrades the longitudinal beam quality, but still gives good spill. Important losses in the PS with good beam quality delivered to experiment. Further optimization in the ring to be done.
- SFTPRO
- Correlation between the PS temperature increase, LHC filling supercycle and degradation of beam SFTPRO beam in the PS identified.
SPS Machine Report (M. Schenk)
Availabilty at 87% for NA, Thu - Thu (09:00).
Unfortunately, heavily impacted by QTAD.2302 magnet waterleak and fault since yesterday:
- Discovered significant water leak Wednesday afternoon
- Tests by experts to run without water cooling until iTS1 – looked OK.
- When pulsing, magnet kept going into Fault, eventually could not restart.
- Investigations by experts did not yet lead to conclusions.
- Access ongoing this morning with additional experts available.
Other items:
- Empty bucket channeling
- Some debugging / systematic study needed; procedure clear, but prefer not to do on operational physics cycle
- Postponed: looking for suitable slot
- High-intensity LHC beams commissioning
- Originally had agreement to run today from 14:00 (thank you). Moved to Monday during LHC MD beam preps.
- Given lost night, freeing up time for NA. Hopefully back by then.
Next:
- Wk 24: LHC MD block 1 – potentially advanced by 1 day, i.e. preparation day on Monday, MDs starting on Tuesday.
- Wk 25: iTS1.
Safety / Radiation Protection (Please Add Your Name Here)
- If one setup on the beamline has no safety clearance -> this setup is not allowed be turned on. Please organise safety visit.
- Other setups are allowed to take beam (unless there is a dedicated veto from safety)``
n_TOF (M. Bacak)
Excellent week for physics:
- EAR1: natEr(n,g) ongoing - swap to 30Si(n,g) next week
- EAR2: mounting 243Am(n,f) setup right now (collimator change, RP veto, …)
Planned stops:
- Wednesday 9h for 6h at least (calibrations and setup swap)
Protons:
- Way above average proton flux in the last week & ahead of overall planning
- We require a stable bunch length (best 28 ns) for all pulse types for the 243Am experiment
East Area Beam Status (J. Bernhard)
T9: Switch to normal configuration successful and beam preliminarily checked for ALICE FOCAL. Final tuning if needed to be done on Thursday.
T10: Beam set up for the next user, muon and hadron beam files with different momenta ready.
T11: No user, beam off.
East Area Users Tour de Table
T8: IRRAD / CHARM (F. Ravotti / S. Fiore)
Very good week with no issues. During the access on Wednesday we exchanged samples for long-term users and replaced samples for the TE-MSC radiation-test under N2 atmosphere (IRRAD). Removed users from ATLAS and CMS, new users installed from ATLAS, SY-BI, CMS, BE-CEM (CHARM). Very good beam all week long, reaching the weekly target intensity (see below).
T8 beam stabilty is very much improved in general and, in particular, since the restart of the facility operation after the LS2:
Next regular access on Wednesday next week.
T9 Outgoing: ATLAS MALTA (Simon Koch, Brian Moser)
- Scanned the ITkPix quad in 16 position for two telescope configurations
- 50M triggers recorded in total
- In between positions, ran alignment runs with 15 GeV hadrons
- Measurement results look very promising, we are able to see all interesting features of the module and get radiation length estimates for it (more detailed analysis ongoing)
- Had some issues with direct light contamination every day from 7 to 8:30 (covering the telescope with black cloth helped a bit)
T9: ALICE FOCAL (Please Add Your Name Here)
T9 Incoming: NanoCal (M. Moulson)
Apologies for Zoom connection problems during the meeting! Slides are available on Indico.
We have 5 NanoCal prototypes ready to test. Our setup for NanoCal is quite simple, consisting of two Si-strip tracking chambers, some timing detectors, and the prototypes to be tested.
We have therefore decided to set up the HIKE SAC prototype parasitically, so that we can debug the system before out H2 beamtime in August. For this reason, we have asked Dipanwita for an additional DESY table.
We will require electron beams at a few different energies (during the day) and mip beams (overnight). We intend to use the Cerenkov detectors to confirm beam particle ID.
Our ISIEC form will be completed today and we will request clearance for Wednesday 14 evening.
T10: ALICE MUON ID (Solangel Rojas, Antonio Ortiz, Dezso Varga)
- Test prototypes
- Plastic scintillators + SiPMs
- With and w/o wavelength shifting fibres
- Multi-Wire Proportional Chamber
- RPC - Tigger setup installed
- DAQ working and taking data (installed inside the beam area)
- Beam profile from multi-wire proportional chamber
- 50cm x 50cm MWPC-s, 4m downstream
- DAQ saturated at 2500 tracks/spill (probably above 20k muons / spill)
- Horizontal beam profile: small divergence
- Vertical: bit asymmetric, divergence larger
North Area Beam Status
H2, H4, H6, and H8 Beams (J. Bernhard)
H2: Smooth operation.
H4: NA64-e continues, smooth operation.
H6: Following EP Safety, H6 was turned off on Thursday evening due to installation without safety clearance. Instructed to turn beam on about 1.5 hours later on Thursday evening. Some tuning necessary after wobbling change on Monday.
H8: Some tuning necessary after wobbling change on Monday. Smooth beam operation for SND. PROTOV installation delayed, so GALORE set as main user for the beam control in the meantime.
Other Beams P42, K12, and M2 (J. Bernhard)
M2: 100 GeV/c hadron beam finer tuning done following the switch. CEDAR PMT readout in CESAR was not working after the crate restart which has been fixed yesterday. SCRAPER.065070 readout needs to be checked as the reference is off. Investigation ongoing.
K12/P42: Some tuning necessary after wobbling change on Monday. Now at nominal intensity for NA62. No issues in the beamlines.
North Area Users Tour de Table
P42-K12 and M2
K12: NA62 (Phil Rubin)
Late last week, we solved the TDAQ problem that was limiting our ability to acquire data at nominal intensity. We then took data smoothly at approximately 80% of nominal intensity throughout the weekend despite terrible spill quality. The beam quality was greatly improved Monday morning, and the intensity was raised Monday afternoon to about 95% of the nominal value, We ran comfortably under these conditions. We continue to appreciate the operators’ efforts to eliminate intensity spikes at the beginning of spills and the system that reduces 50-Hz resonances and harmonics in the spill. We request that the intensity on T10 now be raised to nominal value (from 49E11 to ~52E11 on T4).
M2: AMBER (Maxim Alexeev)
General situation:
we continue to take data with no major issues. We have concluded the 60 GeV data point and successfully moved to the 100 GeV data taking. In total we plan to collect 190 GeV, 60 GeV, 100 GeV, 250 GeV and eventually 160 GeV if the data tacking proceeds at a fast pace. We would like to thank for the very good beam stability and the 3 spills/cycle intervals that allow us to be withing the schedule.
New beam sharing request:
Considering the advice from BE (Johannes & Dipanwita) that lowering the intensity on T6 might increase the beam stability and being receiving more intensity in the experimental hall (after the beam sharing adjustment on Tuesday), we have decided to lower the intensity on T6 to ~30 units. We will test this configuration on Thursday.
Some observations:
- Observed jumps in the beam intensity while beam sharing is adjusted between the targets. Even at equal final values on T6 the intensity in the experiment is changing.
- We had an external intervention on the CEDARs diaphragms on Wednesday at ~13:00. No information that it will happen was provided and the final values left after the intervention are not those we configured during the tuning. It was confirmed that is was due to a software update on the VME cpu by BI to reload default values after a reset of the VME create. We consider that we should be informed about such interventions in advance as it might impact the data quality.
H2
H2 Outgoing: MUonE ECAL (Enrico Conti)
After installation, with beam at 150 GeV we could optimize the APD setting to equalize the channel gain and have a better exploitation of the ADC range. Then we started the programmed data taking.
We move the ECAL wrt to beam to scan many crystal positions, 81 per each energy.
Data collected at 150 GeV, 100 GeV, 50 GeV.
To complete our program: 25 - 75 -125 GeV, not all the positions.
Interesting for us is also the muon beam with small momentum spread. It has been set by Nikos and tried very quickly. Rate was very low on our detector. We will try again at the end of the program, if we have some time left.
So far, beam conditions, in general, excellent, stable, most of the time with 3 spill/cycle. Thanks!
De-installation: We will leave all apparatus in place. We’ll lower the NIKEF table and set apart so that the ECAL does not interfere with the beam for the next group. Definitive de-istallation in the following Wed during the MD stop.
H2 Main: EP FTS (Loris Martinazzoli)
Installation concluded behind the MuonE set-up.
Data taking starting at 8h00 Sat 10/06.
H2 Incoming: ATLAS ZDC/RPD (Riccardo Longo)
See presentation attached to the Indico agenda for schematics & pictures.
All the equipment has reached CERN, as well as a few members of the crew already. Expected ~15 people on site to support the operations. A few members of the crew will leave on Sunday/Monday to attend IS2023 in Denmark - but enough on-site support will be provided throughout all the beam time
Checklist:
- Technical meeting held w/ Michael on Tuesday May 30th.
- ISIEC Booked for Wednesday 14th at 14:30.
- Alignment & Survey booked for Wednesday at 15:00.
- All transport and handling EDH requests created.
Installation plan:
- Operations can start as soon as the NIKHEF table is free - it would be important to start our craning by 10:30 AM at the latest to be ready for the ISIEC in time.
- Our team will start with laying down cables
- It would be beneficial to have access to 1 rack in the control room starting this Friday - to install our DAQ equipment (run by ATLAS experts - that need to set it up before Wed). We will make sure to do not interfere w/ any of the ongoing operations.
Beam conditions:
- Phase I (Wed 14 6 PM - Mon 9 AM)
- e- @ 150 GeV (and eventually 180 GeV if there is spare time - beam will be poor but we can skim it thanks to the calorimeter)
- Phase II (Mon 9 AM - Wed 21 8 AM)
- p @ 300-350 GeV (enventual swtich back to e- @ 150 GeV for short time for some test)
H4
H4 Main: NA64e (L. Molina)
We continue data taking since 22nd May
H6
H6 Outgoing Main: ATLAS BCM PRIME (Andrej Gorisek, Harris Kagan)
- Started installation on Wednesday evening after receiving all the parts
- Data taking and callibration Wednesday night, Thursday morning
- Stopped due to insuficient safety documentation and clearance untill the safety visit
- Safety visit on Friday at noon, everything was ok
- Continued datataking and started the threshold scan untill the BCM’ equipped with FIBed Calypso D ASIC broke later in the afternoon on Friday
- Failed to get a replacement module with the second FIBed chip that was assembled in the meantime and shipped with express carrier to CERN form US. Received the module only on Wednesday morning after our period was finished.
- Summary: We recorded some data with which we will be able to give initial evaluation of the brand new version of Calypso ASIC. More thorough test will be performed in the next test beam period in August, whem we expect to have number of modules produced and testred.
H6 Outgoing Parallel: ATLAS AFP TOF (Please Add Your Name Here)
H6 Outgoing Parallel: ATLAS HGTD (Djamel Boumediene, Stefano Manzoni)
- Test beam is over. Good data was collected (>100M triggers), all the test beam program was covered.
- Thanks for the SPS for all the support.
- Several accesses were needed, especially in the last days. Thanks to the other users of the beamline for their flexibility!
- Some material was left in the area in agreement with Andre and Dominik to perform setup testing.
H6 Main: ALICE ITS3 (Paolo Martinengo)
Detector installed and debugged during last week, eagerly waiting for beam
H6 Parallel: EP PIXEL (Justus Braach)
- Minor upgrades of telescope completed
- Ready for high rate tests of FASTPIX small-area devices @ (500−1300)𝜇𝑚2
- In favor of same settings as in previous high-rate beam times, highest achievable rates, smallest beam size
- Ready for full remote operation, high statistic data taking after initial check of beam position and region of intrest tuning
- Coordinate access in H6A via Mattermost.
H6 Incoming Main: ATLAS ITK PIXEL - Week 24 (Please Add Your Name Here)
H6 Incoming Parallel: AIDA INNOVA WP6 - Week 24 (Iván Vila Álvarez)
Daq and slow control equipment already at CERN. Expected ~6-8 people on site to support the operations. DUTs to arrive on Monday next week.
- ISIEC form submitted already, and safety inspection confirmed for Thursday 15th at 15:00.
- Installation of all the components will start on Wednesday 14th, to be completed in one day (first test beam for the activity).
H8
H8 Main: SND@LHC (Please Add Your Name Here)
H8 Main: PROTOV (Please Add Your Name Here)
H8 Parallel: GALORE (Please Add Your Name Here)
H8 Incoming Main: TOTEM PPS (F. Garcia)
Due to the TOTEM Special Run scheduled to June 24th during TS1. The plan is to use this slot for last minute tests of the nT2 Quarters in case of need. The beam requirements are pions at 150 - 180 GeV/c and spot of rms 7 mm in X and Y.
Because of that, we are flexible to negotiate with the Parallel/Parasitic users on sharing this slot. However, in case of need then in short notice the beam will be moved to our requirement.
H8 Incoming Parallel: STI (L.S. Esposito)
We are presently checking the equipment and we will start the installation in PPE128 on Wed. Looking forward to starting the data taking.
Parasitic Users
Reporting for parasitic users is optional, please add your name below:
H8 DUMP: STRAW TRACKER 3D (Please Add Your Name Here)
AOB
Minutes by the respective speakers, edited by E. B. Holzer and M. Schwinzerl
There are minutes attached to this event.
Show them.
