Simulation and Analysis TF

Europe/Berlin
Description

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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Sasha:
- g+laser bkg sim:
  - need a better model of the CALICE calo or just put the FCAL there
  - IP chamber modifications 
  - launch as soon as possible without the calo(s) and complete the implementation in parallel —> once we have something adequate, launch another run with one of the calos (bkg should be similar to the positron side)

Asaf:
- needle? —> exists in the model
- bellow joints? —> we can just use the current design for the simulation since the joint is large enough but we have to remember that the joints should be done with large enough bellows to the rectangular chamber of the magnet (downstream the IP box) and the beampipe (upstream the IP box).
- do we need to make it smaller? —> probably not - right now we have ~15 cm clearance to the wall.
- entrance and exit should be in the same feedthrough? —> talk with Ishay, Rjendra and Matt (and Louis) —> what is needed and what can be done (and also who is doing the ICS box design)
- Rajendra: 500 mm focal length of the parabola lens?
- Sasha: note that the IP itself is not at the centre of the chamber
- Louis: please redo the model where the IP is the origin of the coordinate system
- Sasha: why do we need the 2 mirrors in the bottom left? —> answer is complicated but this is basically by design, i.e. a real requirement.
- beam dump metal+water —> need to check how much bkg flux (if at all) is generated in this dump and see if it may need to be moved?
- the beam intensity can be aggressive on the material of the mirror —> need to check if this is not going to be a problem

Arka (digitisation):
- correlate MPV to the energy deposited via the e-h pair energy —> need to calculate


Arka (background):
- what is the element sitting after the Cherenkov?
- we need to estimate the dose from neutrons
- the electrons are more energetic than what we saw in the CDR but just by a little
- electron side tracker is lowered by 15 cm but we still see lots of electrons there —> need a top plate.
- look at the fraction of Edep (it lists also the different particles) —> check if neutrons are actually contributing.
- need to remake the dose plot with the neutrons and everything
- check if the number of protons is correct.

Others:
- Maryna: we can now generate signals ourselves —> need more signal BXs for the compton analysis
- John and Shan will look at the data for next week.

There are minutes attached to this event. Show them.
    • 1
      Intro
      Speakers: Beate Heinemann (DESY and Freiburg University), Daniel Seipt (Helmholtz Institut Jena), Noam Tal Hod (Weizmann Institute of Science)
    • 2
      IP chamber design update
      Speakers: Asaf Levanon (TAU), Ishay Pomerantz (TAU)
    • 3
      ALPIDEs digitisation update
      Speaker: Arka Santra (FTX (Technol. zukuenft. Teilchenph. Experim.))
    • 4
      First look at the e+laser background
      Speakers: Arka Santra (FTX (Technol. zukuenft. Teilchenph. Experim.)), John Hallford (UCL), Louis Helary (DESY - FTX), Marco Bruschi (INFN and University of Bologna), Maryna Borysova (FLC (Technol. zukuenft. Teilchenph. Experim.)), Oleksandr Borysov (DESY), Ruth Magdalena Jacobs (ATLAS (ATLAS SM and Beyond)), Shan Huang (Tel Aviv University)
    • 5
      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))