Simulation and Analysis TF

Tuesday 27 Jul 2021, 10:00 → 13:00 Europe/Berlin

Topic: LUXE simulation and analysis TF
Meeting ID: 916 7025 7822
Password: 434044
Time: This is a recurring meeting Meet anytime

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Intro (CKV+screen):
- will check without internal shielding
- take the window a bit above the bottom of the straws (a few cm’s) and add shielding below to cover also the fibres etc.
- prefer to have the support all the way to the beam pipe without the vertical part close to the beam
- extend also the screen to 1m
- think about clamps

Stuart:
- redesign of the beam transport to get a better focus IP
- we can get ~5 um in principle but we should plan for something between 5 to 10 um
- larger beam is easier
- 7.5 um is achievable and the 5 um should also be achievable (TBC)
- for now we go with 5 um for the 1st prod. and Stuart will confirm in a few weeks if we need to assume something larger

Noam (window):
- change to 300 um
- check the window height when the 1st round of the signal after G4 simulation - 24 mm may be too large
- measure also the deformation over long time under max vacuum

Tom:
- need some feedback from Matt and Gianluca (min/max w0)
- how many BXs to simulate? —> for now 10 is fine
- maybe use 10^5 macro-particles and more BXs?

John:
- what material is implemented for the straws? —> will talk with Louis
- take cad from Oz (later today)

Maryna:
- why not increase the depth of the insert from 10 cm to e.g. 30 cm?
- don’t need an insert from the back of the wall

Sasha:
- small change in the dump (a centric hole ~10 cm deep and 3 cm wide)
- need some feedback from Marco et al for the profiler
- BSM detector should be circular or rectangular with short axis being >1m
- the b-field is of a C-shape magnet —> probably needs to be symmetrized for a proper dipole

10:00 → 10:10 Intro

Speakers: Beate Heinemann (DESY and Freiburg University), Daniel Seipt (Helmholtz Institut Jena), Noam Tal Hod (Weizmann Institute of Science)

Noam_IPdetectorsCAD_27072021.pdf

10:10 → 10:25 Electron beam focusing

Speaker: Stuart Walker (MXL (XFEL))

stuart-walker-luxe-ff-design.pdf

10:25 → 10:45 PTARMIGAN updates (standing item)

Speakers: Daniel Seipt (Helmholtz Institut Jena), Thomas Blackburn (FLC (FLC Fachgruppe ANA)), Tom Blackburn (University of Gothenburg)

ptarmigan_update_27July.pdf

10:45 → 11:05 Vacuum chamber window measurements

Speaker: Noam Tal Hod (Weizmann Institute of Science)

Noam_vacuum_chaber_window_27072021.pdf

11:05 → 11:25 GEANT4 model updates (standing item)

Speakers: John Hallford (UCL), Maryna Borysova (FLC (Experimente an Lepton Collidern)), Oleksandr Borysov (DESY)

JohnH_G4_model_update_27_07_21.pdf

luxe_sim_update_27072021.pdf

WTM_270721_shielding.pdf

11:25 → 11:45 AOB

Speakers: Arka Santra (FLC (Forschung an Lepton Collidern)), Beate Heinemann (DESY and University of Freiburg (Germany)), Daniel Seipt (Helmholtz Institut Jena), Federico Meloni (ATLAS (ATLAS SM and Beyond)), Gianluca Sarri (Queen's University Belfast), John Hallford (UCL), Kyle Fleck (QUB), Louis Helary (FTX (FTX Fachgruppe SLB)), Marco Bruschi (INFN and University of Bologna), Maryna Borysova (FLC (Experimente an Lepton Collidern)), Matthew Wing (UCL), Noam Tal Hod (Weizmann Institute of Science), Oleksandr Borysov (DESY), Ruth Magdalena Jacobs (ATLAS (ATLAS SM and Beyond)), Shan Huang (Tel Aviv University), Thomas Blackburn (FLC (FLC Fachgruppe ANA))