Acting Physics Coordinator
6.8. - 12.8. Martin Jaekel
13.8. - 21.8. Paolo Martinengo
22.8. - 7.9. Martin Jaekel
8.9. - 11.9. Paolo Martinengo
| Date | dedicated MDs | ECN3 access |
|---|---|---|
| 27 July | Empty Bucket Channelling (needs beam to North Area targets) | no access |
| 10 August | Crystal shadowing from LSS4 (needs beam to North Area targets) | no access |
| 17 August | Splitting efficiency and lossless transport in TT20 (needs beam to North Area targets) | no access |
| 31 August | Barrier bucket transfer | access possible, tbd |
| 12 Sept | COAST for crab cavities and source/RFQ tests (during cooldown before injector Technical stop) | access possible |
| 15 Sept | COLDEX run (24h after injector technical stop) | access possible |
| 21 Sept | source/RFQ tests, then TT20 optics | potentially no access |
| 28 Sept | COAST for crab cavities | access possible |
| 5 Oct | crystal shadowing from LSS4 | access possible |
| 2 Nov | Slow extraction with multipoles | potentially no access |
95% availability of the PS machine during the past week.
2h lost in the injectors, Linac4 issue with buncher 1 and POPSB trips mainly
In PS the main faults concern an intervention of PIPO due to a communication issue between a gateway and FGCs, a fault in a ratiation monitor in Irrad that stopped EAST beams and missing RF train from SPS.
To note the increase in intensity of the MTE beam, currently played with ~2250e10p
Physics:
Beam:
Excellent intensities, 1% ahead of planning
T09: Smooth Operation. No issues. A MDX magnet has been installed in the T09 zone for STORM and Gamma MeV (next user). We used the power converter of the existing MDXL installed in the beamline disconnecting that magnet. The controls are being checked with EPC now.
T10: No user. Some summer student exercises, training for beam operation, and test of new CESAR version planned.
T11: No user.
Weekly access went well: exchanged samples for the CMS HGCAL voltage regulators experiment and started samples for ITk Pixel in IRRAD. Oher experiments continue in IRRAD including one for ATLAS wich is running in a parassitic location (Zone 4). In CHARM we have people of Weiner and CAEN that installed and are now testing power supply components. Beam is good and stable in all BPM. The “position” instability happened not very often in the last days and, since he CPS is ofen short, we have periods where we run with a relatively high flux 2-2.4E14 p/h. We plan to continue stable run for experiments until next week.
Test beam finished yesterday. Area emptied by 8h30 in the morning.
The setup installation has been finalised today. We are ready to start taking data.
H6: No issues. Operation ongoing.
H8: No problems (as mostly no beam from upstream). Change to Medipix on Wednesday. Provided XSCI.042.475 signal to users.
No particular issues, but also no beam for a major part of the week.
Beam came back in nominal parameters after the T2 TBIU issue stop. So far the regulation card issue has not come back.
Nothing in particular to report on the beam since the TBIU repair. Thanks to the SPS team.
Nothing to report, we wait for Compass target repalarizing
We started our data taking on Tuesday; given the huge amount of beam time lost, we rethought our physics programme (common between STORM and KLEVER) in order for it to fit in ~1 week.
VERY IMPORTANT Yesterday (August 3rd, Wednesday) morning there has been an accident with the crane operators: they came for an intervention in PPE 172 originally scheduled on Friday (August 5th) but then cancelled several days ago. They entered the area (which was in key access and with beam on) without checking in with anyone of us in the control room, moved some parts of the setup already installed and aligned (and powered!) and started removing a beam pipe. Thanks to Nikos’s quick reaction the situation was easily solved and the pipe was put back in place, but anyway we ended up losing several hours over realignment and setup integrity checks.
See above (STORM).
The set up on Wednesday was quick and smooth. Safety clearance passed in the late afternoon without issues. Two irradiated RD53B SCC modules with 3d sensors mounted together with a RD53B SCC reference and a quad module (currently not operated). After some issues tuning worked fine and we were ready for data taking when beam came back. Data taking ongoing with the intention to do a matrix of measurements (variation of bias voltage, threshold, angles). First data point taken yesterday.
Little amount of parasitic data taking, switched off the chiller and moved to non-irradiated modules.
Currently characterising MCP-PMT time-reference planes with parasitic data taking. For next week, we plan to perform high-rate tests of DPTS small-area devices as well as iLGAD Timepix3 assemblies. Can start with same beam settings as in previous high-rate beam times. Possibly somewhat increased beam size for the Timepix3 assemblies. Will coordinate with Dipanwita and with parallel users (ATLAS MALTA / ATLAS ITk) about beam settings.
We have managed to take data during the night of Monday with the low intensity beam and thus finishing with tets of the nT2 Quarter #1.
We will try to cover at the campaing for muons in the following slots, perhaps in parasitic or in our dedicated slots.
The beam geometry was as requested and hope to use this file in the future.
Many thanks to all NA crew.
Minutes by the respective speakers, edited by E. B. Holzer and M. Schwinzerl