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Meeting ID: 916 7025 7822
Password: 434044
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Arka:
- fixed timing issues
- fixed r-range
- correlation with time could be more important for other dump (not in the IP)
- most energetic neutrons discrepancy —> fastsim has a bit more
- small r discrepancy —> fastsim has a bit less
Sasha:
- low E photons and neutrons coming from the e-dump mostly.
- probably all peaks are due to the e-dump particles
- should send to Ishay and Matt
- the negative-x mirrors are shadowed by the setup unlike the positive-x
- damage is for the optical-coating of the mirrors (can check for telescopes/satellites, etc) —> should check just the thin layer? probably not.
Ben:
- increased yield of e+e- at lower xi —> by how much?
- can also reject the background much better (e+e- pair is constrained)
- CBS is coherent, i.e. narrow-bandwidth photons
- CBS is also partially polarized (good for nonlinear vacuum birefringence)
- polarization cannot be done per-pair (measure the rate of NBW vs the level polarization)
-
Alexander:
- why E_0 = 4.5 GeV? —> use this to simulated Jalb setup.
- what is the thickness of the Dimond crystal and don’t we have Bremss away?
- the beam emittance is not yet fully simulated
- need cooling? —> this problem may be solved for diamond target but due to the small thickness it may be a problem.
Luca:
- for 4mm straws, there’s no large difference between 4 layers and 2 layers
- for 6mm straws, the resolution is larger than 2% above 10 GeV
- what is the limit of straws in terms of the PCB with the SiPM’s? —> no problem since the PMs can be placed close enough on the PCB.
- need to also look at bkg