Simulation, Analysis and Software

Europe/Berlin
Description

Meeting ID: 916 7025 7822
Password: 434044
Join from PC, Mac, Linux, iOS or Android: https://weizmann.zoom.us/j/91670257822?pwd=L01uZHJMTmtmNkdpUklOTnlMU1M5QT09

Intro:
- Arka: digitized g+laser, next week
- Shan: did the reco, next week
- Yee: next week data management


Tom:
- CP is fully done
- LP is on the agenda now
- e-laser polarization resolved NCS is ready —> profiler group need to look at this.
- g+laser will come in 1-2 weeks
- Sasha: polarization info is added to the h5 file? Yes, it will.
- Shan: does the initial phase impact after 10 cycles in CP? No impact.
- will be good to have plots showing the different yields
- 2-3 weeks for the ext update.


Stewart:
- title is: machine related studies (rather than just halo)
- halo-accelerator, beam-residual_gas, synchrotron radiation 
- 1-micron-level variation of the focus is achievable 
- assume 1e-8 mbar? —> no it is 1e-5 (slide 12) but this also depends on the gas composition.
- need the _HP physics list, no?
- beam-gas interaction: can the photons converge to pairs in the material? Still we see very little positrons and electrons so probably OK.
- how to integrate in the LUXE model?
- Louis: can we do this study for different beam energies? —> need full tracking simulation (lower beam energy / lower bunch charge = more bkg?)
- Sasha will talk with Stewart to integrate but the deadline for readiness is when the model is more ~fixed (after updates from Louis and Karsten)


Sasha:
- used a “wide needle” but it can be “cut” to the desired width
- started with the photon beam
- can you run with e-beam?
- need a cone-like tip of the beam to cope with the e-beam rate (would be good to move in the vertical direction)
- need to see how the holder of the needle is impacting the bkg (due to the photon beam hitting it).

There are minutes attached to this event. Show them.
    • 9:00 AM 9:10 AM
      Intro 10m
      Speakers: Beate Heinemann (DESY and University of Freiburg (Germany)), Daniel Seipt (Helmholtz Institut Jena), Noam Tal Hod (Weizmann Institute of Science), Oleksandr Borysov (DESY)
    • 9:10 AM 9:30 AM
      Updates on physics simulation 20m
      Speaker: Thomas Blackburn (FTX (FTX Fachgruppe SLB))
    • 9:30 AM 9:50 AM
      Background from beam halo, etc. 20m
      Speakers: Stewart Boogert (MPY (Beschleunigerphysik)), Stuart Walker (MXL (XFEL))
    • 9:50 AM 10:10 AM
      GEANT4 simulation updates 20m
      Speaker: Oleksandr Borysov (DESY)
    • 10:10 AM 10:30 AM
      Followup on proposal for dataset naming and plan for grid storage - TBC 20m
      Speaker: Yee Chinn Yap (FTX (FTX Fachgruppe SLB))