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v3.3.5-pre
Bi-weekly meeting of the SiD Detector Optimization group. To join this meeting please click here.
Attending: Andy, Christian Weber, Chris D, Chris P, Jim, Marty (Apologies: Dan)
Minutes (from Chris D):
- Jim gave an update on his MAPS simulation studies. He has looked at the low-rate but clean process Higgs to K_0 K_0bar at 250 GeV, with each K decaying to 2 pi_0, hence just 4 gammas in the final state. Not yet with Geant, but with realistic smearing of gamma energies. He showed the importance of the excellent spatial resolution of the MAPS-based ECAL, in contrast to the former baseline, which is due to the frequency of high energy pi_0s with small opening angle decays. Photon pairs frequently lie within 1 cm of each other at the ECAL.
- This study can soon be extended to full Geant, and Jim would welcome help with this important work. Needs funding soon!
- Chris D reported still no response from ILD people (notably Nigel Watson) on state of their DECAL studies. He will ask again.
- Due to the small size of the first MAPS prototypes now under design (~1 mm square), there might be a role for KPIX prototypes in beam testing. To be considered in detail.
- Tatsuya Nakada made important points in last week’s European meeting, regarding the perception of MEXT from discussions with German, French and UK reps in June 2020, that Europeans aren't likely to contribute significantly to ILC. In trying to reverse the downward spiral, Jim suggested that Chris D exchange ideas with Maxime Titov, who is proactive in this area, but who missed last week’s meeting.
- Marty mentioned that Caterina (new Panofsky Fellow) may be interested in studying the performance of the MAPS-based tracker. There are numerous open questions, among them the viability of very thin time-integrating tracking layers, which since 2008 have never been studied in detail.
Next meeting: September 22nd, 2021