Simulation and Analysis TF

Tuesday 8 Dec 2020, 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:
- ebeam-only production is still running at UCL and at TAU —> will transfer to DESY.

Tony:
- shown some validation plots
- regeneration is ongoing
- calculating the total rate for every photon
  - HICS lookup table —> later
  - try to parallelise —> now, asking for more CPUs per node —> ask Christoph (via Sasha)
- Full OPPP doesn’t follow the MC (or vice versa) this is due to the ramp?
- extend the Full OPPP curve all the way to the end of the graph
- Daniel: do not understand the drop at high xi (top left plot)
  - rest mass increasing —> pair mass increasing
  - however, LCFA should be good there —> it doesn’t show such suppression at large intensities
  - for phase2 we need to understand if this drop is physical (for phase1 it is almost perfect)
  - Tony and Daniel will check offline quickly since we don’t want to put something which is potentially unphysical
- 

Sasha:
- reuse the same particle several times 
- need to include the layout of the the IP box components (inside)
- table of fractions should be used by everyone
  - spreadsheet should be updated and also the plots
  - John will update and Noam will add his numbers as well.

Maryna:
- move to 1 GeV cut for the fwd lanex motivated by the acceptance plots
- dividing the RMS errors by the sqrt(<N>)

Kyle:
- deconvolution finally works!
- how to determine the FIR error?
  - Ruth is running toys of pseudo-data with different photon stats
  - check in papers what is done with the FIRs etc
  - next week we can dedicate 2 talks for that matter only

Louis:
- centralise the nominal benchmarks for the CDR (Sasha and Noam)
- how to separate the signal from the bkg from tony
  - we just need to make sure that we give the (short and correct) description of what goes in the bkg/signal plots
  - Arka: trackid==1 and pdgId==22/-11/+11 is signal otherwise background
  - John: looking more inclusively also on secondaries which are coming from the signal etc but can also use trackid
  - Maryna: nothing like the above 2 since the trackid has no meaning after the conversion for example.

10:00 → 10:10 Intro

Speakers: Dr Anthony Hartin (DESY), Beate Heinemann (DESY and Freiburg University), Dr Gianluca Sarri (Queen's University Belfast), Dr Noam Tal Hod (Weizmann Institute of Science)

10:10 → 10:25 Signal simulation status

Speaker: Dr Anthony Hartin (DESY)

Hartin_LUXEstudy_Dec8_2020_update.pdf

10:25 → 10:40 GEANT4 simulation status

Speaker: Oleksandr Borysov (DESY)

luxe_sim_update_08122020.pdf

10:40 → 10:55 Fwd spectr. & FLUKA update

Speakers: Mr Kyle Fleck (QUB), Dr Maryna Borysova (KINR)

ForwardSpectrometerUpdate_08-12-20.pdf

WSM_081220.pdf

10:55 → 11:15 Bkg studies

Speakers: Arka Santra (Weizmann Institute of Science), Arka Santra (FLC (Experimente an Lepton Collidern)), Halina Abramowicz (Tel Aviv University), John Hallford (UCL), Louis Helary (DESY), Maryna Borysova (FLC (Experimente an Lepton Collidern)), Oleksandr Borysov (DESY), Ruth Jacobs (DESY Hamburg)