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News and round table
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Rogelio said we are back to 100% teleworking. Exceptions are possible, office sharing not.
Student and fellow requests were sent to department.
Please send any JUAS requests to Rogelio this week.
JUAS will take place from January to March '21. See Rogelio's slides that also show the summary of
Joerg from the LBOC yesterday, on the current knowledge of the LHC schedule with a beam test in 2021.
Experiments related:
Helmut reported that the recent LBS#105 meeting had presentations from CMS and LHCb with requests for input from our side. For slides and minutes see https://indico.cern.ch/event/866773
The 29th HL-LHC coordination WG met on the 28/10, with a presentation from Rogelio on the HL-LHC integrated luminosity estimate including ions and news from the project and the large experiments.
The LHCC will meet in two weeks with an open session discussing the machine and experiments status on Wed. morning Nov. 18 https://indico.cern.ch/event/967754
Injectors:
Alex reported that hardware commissioning has started and that the LIU meeting yesterday discussed the injector schedules (without ion physics) next year.
Collimation:
Stefano said the team is preparing for the commissioning next year including crystal collimation required for ions in the absence of the 11T magnets,
and following up on difficulties with external collaborations to minimize delays.
Codes:
Laurent said that he just gave an MAD-X course, all remote, going well.
Tobias reported that work is ongoing on whata could be called machine state saving for MAD-X including errors, using HEX format to eliminate any loss in precision by rounding errors.
Helmut tests MAD-X slicing with extra attributes in DIPEDGE to minimize any loss of information on the TWISS level and in view of possible extensions to allow for tilted solenoid slicing.
Riccardo reports on work for SixTrack related to crystals, and follow up of issues observed by Frederik and Gianni related to crab cavities.
OMC:
Tobias reported on discussions with OP and controls, and in particular the question if SDDS support should be continued and how to adapt to the new planned electronic logbook.
Presentation with slides
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Experience with FCC-ee lattice in MAD-NG, Leon Van Riesen-Haupt
Leon performed the MAD-NG test using FCC-optics allowing for both comparison with MAD-X as well as SAD.
He finds good agreement for linear optics and momentum detuning and for radiation integrals except I1, and gets a significantly larger detuning with amplitude in MAD-NG,
and observes that MAD-X is faster in these studies than MAD-NG and PTC.
He plans to extend the comparisons to include radiation, damping and emittance determination including tracking.
Helmut, Tobias and Rogelio comment on needs to further enhance MAD-X as required by FCC-ee (emittance with tilted solenoid, overlapping fields, change of damping partition).
A glimpse of the new Beam Performance Tracking (BPT) framework, Alexander Huschauer
Alex introduces the efforts that started within LIU to facilitate the tracking of performance parameters between accelerators. It is based on Python with data fetching using the pytimber CXCALS API. The framework is available https://bpt.web.cern.ch and Alex demonstrates some of the already available features for the injectors and says that scripts for the LHC will soon be added.
Roderik asks if the data can be downloaded for further offline analysis. Alex replies that this is planned.
Report from the PBC-FTLHC Fixed Targets, Stefano Redaelli
Stefano reports for the LHC Fixed Target working group chaired by him with M. Ferro-Luzzi and C. Hadjidakis as secretary, as part of the Physics Beyond Colliders studies launched in 2016. A summary of the findings is available as Yellow Report CERN-2020-004. One of the detectors studied is SMOG2 at IP8 that has meanwhile been endorsed by the LHCC.
The proposed experiments involve gas targets or halo splitting and bend crystals. The LHC spin collaboration studies the possibility of a polarized gas target.
The PBC studies will continue over the next 5 years with increased resources, according to the new medium term plan.
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