September, 19 FCAL Worlshop in Tel Aviv W. Lohmann, DESY Physics Requirements Input From Theory Lessons from LEP LumiCal Simulations BeamCal.

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Presentation transcript:

September, 19 FCAL Worlshop in Tel Aviv W. Lohmann, DESY Physics Requirements Input From Theory Lessons from LEP LumiCal Simulations BeamCal Hardware Next steps

September, 19 Two loop ew corrections to Bhabha scattering (T. Riemann)  complete treatment of higher order contributions in the Bhabha MC geberators to approach precision Impact of polarisation on the Bhabha cross section (P. Starovoitov)  corrections on the % level, need next order Input from theory Requirements from Physics Susy top production- Instrumentation of the forward region for background suppression (C. Milstein)

September, 19 Lessons from LEP Experience with the OPAL detector (D. Strom)  control of the inner radius, phi symmetry  be careful with material in front of the detector  importance of testbeam measurement  Lumi at 20 mrad crossing angle LumiCal simulations Beam- beam interactions, analytic relationships (S. Kananov) Pad and strip design (R. Ingbir, B. Pawlik) Background for LumiCal (L. Suszycki, I. Bozovic-Jelisavcic)  Design for small crossing angle is stable  first look to 20 mrad case, background from beamstrahlung  two photon events in the calorimeters, to be clarified

September, 19 BeamCal simulatons Optimal segmentation for electron detection (A. Elagin) Comparison of the performance for different ILC parameters (V. Drugakov)  ½ R M gives best results  electron veto for different accelerator settings, geometries, pushed to high efficiency Background estimates Background in the inner detector (K. Buesser)  amount of hits is larger for 20 mrad  depositions on LumiCal (cover front-face with carbon?)

September, 19 SiD forward region (D. Strom) R&D with diamond sensors (K. Afanaciev, Ch. Grah)) FE electronics (W. Lange) Si sensors (W. Wierba, Z. Krumstein)  first design for 20 mrad crossing angle  new results from diamond sensors  electronics concept  Si sensor design, offer from JINR Hardware developments Beam diagnostics and position monitoring Positioning monitoring with a laser beam (W. Wierba) Beam diagnstics with BeamCal (Ch. Grah)  monitoring on a few mum level is demonstrated  fast lumi estimate on bunch-by-bunch level for feedback

September, 19 What has to be done: We need a similar design for 20 mrad crossing angle -repeating the studies on critical parameters (as done by achim) -feasibility of beam diagnostics (magnetic field!) -Studies of background We have to understand Bhabha phenomenology -Status of the theory, radiative effects and detector performance (clustering) - Comparison of different generators (BHLUMI, SamBha….) - Background studies - Realistic readout scheme

September, 19 What has to be done: Sensor and Readout -Continuation of diamond studies (more samples with promising diagnostics, linearity, homogeneity, high radiation doses.) -Si sensor studies (to learn to work with them). -Si sensor radiation test. -Assembly of full sensor planes  prototype test. -Readout electronics concept, manufacturing of prototypes. -Concept Design for the ‘fast readout’ and fast diagnostics (related to Eurotev).

September, 19 General remark -It was a perfectly organised meeting -We learned a lot on Physics (Y. Grossman ……) Culture, history, restaurants …. thank you, Halina, Aharon, Ronen.. All the others Next steps -ECFA WS in Vienna, Nov contributions on: theory inputs, detector performmance, background studies, hardware, beam diagnostics…..