Physics Coordination schedule:
June 13th: User meeting exceptionally on zoom only (for availability of the conference room).
Today beam stop 13h30 for ≈ 30 minutes.
LINAC4, to change a power supply in one klystrons.
User Schedules v2.0.1 (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. Newly available : Week 22 in H2. (In parallel with NA64, high energy hadrons and low energy electrons (< 120 GeV/c) of good quality)
2024 injector schedule released EDMS 2872566
2024 approved LHC schedule EDMS 2872429
Proton Run 2024
Ion Run 2024
Reminder: All 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.
Upcomming MDs:
Upcoming Techncial Stop
Good availability since last Thursday (94%)
Smoothly data taking.
Beam in stable conditions:
General: First tests done with 15 GeV/c protons to T09 target and 0.8 s flat top. Many thanks to BE-OP for their help and support. Will need one day to test this down to the experimental areas.
T09: Good operation for HERD. Beam set up for VLAST this morning.
T10: Good operation.
T11:
Regular user operation. Good week, cumulated ~2.4e16 p/w on T8 as on W19, see plot below. We reduce intensity on Monday morning to test cool-down scheme for CHARM. Beam slighly off center on the X-axis during long weekend (center within +/- 2mm ~60% of the time). Very good on Y-axis:
Access during Wednesday morning. In IRRAD removed the TE-CRG experiment, all other long-term experiments continue while preparing new samples for ATLAS-HGTD. In CHARM two experiments removed (BE-CEM and half of TE-MPE), the others continue for this week. We continue until next Wednesday.
Successfully completed our expected test items.
| energy scan | dE/dx scan |
|---|---|
| 1-5 GeV/c e- | 1-5 GeV/c e- |
| position scan | energy scan (π+/π-/μ+) |
|---|---|
| 3 GeV/c e- | 5, 10, 15 GeV/c |
The PS beam was stable last week, with a total of about 1 million valid events acquired (triggered area with 4 cm×4 cm).
We completed the uninstall of the equipment on 21 May, and radiation protection already completed.
Many thanks to the beam operators and physicists.
The detector setup is OK. Dipanwita is now helping us tuning the beam. Normal data taking should start soon.
Test successfully completed, deinstalled yesterday morning as planned
No issues to report, beam was just fine
H2: Smooth operation.
H4: Smooth operation.
H6: Beam set up for high intensity with the longer target in T4. No issues.
H8: Good operation. Hadron beams set up for ATLAS TileCal with new tertiary optics, looking forward to feedback.
M2: Good operation. Quad9 fluctuations caused some trips. EPC changed the regulation card yesterday but the fluctuations remain. To be followed up.
P42/K12: Smooth operation.
Thank you for providing 20-21 units on T10, as requested, for generally good beam quality and availability, and for the heroic work recovering RF cavity 1.
Reminder: Because we are very sensitive to beam quality (instantaneous rate), we appreciate your patience for and quick response to our request(s) to remove spikes in the flat-top.
Access to the experimental area during beam time was required to fix two detector problems and so TI could replace a broken network switch (D900-1V-IP504-SHPBL-1).
This morning, between 6:30 and 8:30, a faulty hydrogen gas leak detector caused the experiment to lose about 2 hours of data due to interlocks on the CEDAR HV. The leak detector is now bypassed, and some intervention will be necessary to fix or replace it or the interlock system.
We’ve performed some test using muons, electrons and hadrons.
We tested the response of multiple gains/channels of our detector, inspect the back-splash effect induced by electrons (indicating gamma-rays), and the direct ionization effect to APD chips.
Here are some very priliminary (deposit) energy responses for 50 GeV, 100 GeV and 140 GeV electrons (though not pure).
More detailed analyses on the back-splash effect and APD-direct signals are still ongoing.
Thanks Nikos and Michael for the support during out beam test.
Smooth data taking, except 18 and 19 May, when SPS was OFF. We are accumulated around 2.1x10^11 EoT and recorded 51K spills.
Intensity test with 100 units on T2. The data was recorded with intensity: 6.5x10^6, 8.5x10^6, 9.4x10^6, 10.0x10^6, 11.0x10^6, 12.6x10^6.
There are reasonable beam quality up to 12.6x10^6 and very nice up to 10.0x10^6. Thanks to the BE-EA group, in particular Nicos, Sylvain, Bastian and Michael.
As far as I know successful data taking with ASIC in cold state. Cold box has been cleared and telescope/FEI4 switched off but support equipment stayed there for the continued data taking in one week time.
A lot of data recorded with one unirradiated RD53B single chip module using the BDAQ readout with eudaq2/tlu2 feeding the tlu clock into BDAQ to time align. Timing has to be analyzed; some ideas to improve timing for next time. Data taking was stable. Beam was good. Setup has been removed leading the AIDA telescope with PI stage in nominal configuration. Telecope/FEI4 have been switched off.
Thank you to Dipanwita for the effort to realign the beam
Very satisfied with the beam
Smooth data taking
CMS Pixel will start detector production this year. We’ll test production prototypes with close-to-final readout chips that were irradiated to end of life fluences: efficiency, positional resolution, different read-out modes.
Setup as usual:
beam with rather low intensity (~5kπ
Apologies for missing the meeting today!
The installation of new electronics was completed and setup moved into the area.
Safety inspection in the afternoon and clearance for beam received.
We are iterating with technical team for finalising/checking the routing of one Cherenkov counter that seems missing.
The requested beam files/settings were prepared and tested by Maarteen late in the evening. Many thanks Maarteen!
Testing the table movement we realised a small mechanical part
connecting the encoding of the angular position to the computer controlled movement system was damaged.
We are trying to repair it with help from the ATLAS TC team. In the worst case scenario the rotations can be performed by experts and position monitored manually with laser system. All other movement are monitored/controlled by the SW.
We plan calibration scan with Cesium this afternoon/evening, and should be ready to start the Run program tonight or tomorrow.
Thanks to all the CERN personnel of NA for the help in the setup, in particular Michael and his teams and Maarteen.
The run went quite smoothly; easy collaboration with the other users on the line.
We took lots of data with the TimePix3 with the crystal in different positions.
We finished the commissioning of the hardware of the new tracker configuration.
Yesterday we moved the detector out of the line and we’ll be back in 3 weeks.
Thanks to Maarten and Dipanwita for being ready to help at all times.
Thanks to CCC operators for help in opening/closing the zone, and putting the line on standby.
We should be reviewed at the IEFC on May 31st.
Minutes by the respective speakers, edited by E. B. Holzer, M. Jäkel, T. Shulha, and M. Schwinzerl