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FCAL Workshop in Cracow

FCAL Workshop in Cracow. W. Lohmann, DESY. The BCD (Baseline Configuration Document) The next calendar dates Where we are with FCAL. The BCD. Executive Committee for Baseline Configuration GDE Director Barish Regional Directors Dugan – Americas Foster – Europe Takasaki – Asia

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FCAL Workshop in Cracow

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  1. FCAL Workshop in Cracow W. Lohmann, DESY The BCD (Baseline Configuration Document) The next calendar dates Where we are with FCAL INP PAN

  2. The BCD Executive Committee for Baseline Configuration GDE Director Barish Regional Directors Dugan – Americas Foster – Europe Takasaki – Asia Accelerator Leaders Yokoya - Asia Raubenheimer - Americas Walker - Europe Responsible for decisions and documentation for the Baseline Configuration Document (BCD) GDE Executive Committee INP PAN

  3. ILC Parameters INP PAN

  4. The BCD The Baseline Machine (500GeV) The 1 TeV upgrade INP PAN

  5. 2 Interaction Regions Two Detectors, because: • Confirmation and redundancy • Complementary Collider options • Competition • Efficiency, reliability • Historical lessons We have to contimue with two design options! 2 mrad and 20 mrad INP PAN

  6. GDE groups Machine design, Cost ….. Siting, civil construction ……. Physics, Detectors • - J. Brau (America) • F. Richard (Europe) • H. Yamamoto (Asia) ………. Area subsystem leads Beam delivery system A. Seryi, H. Yamamoto (MDI panel) D. Angal-Kalinin INP PAN

  7. The next calendar dates EUDET kick-off meeting in Hamburg, February 15-17. We have to present our plan for the next 4 years LCWS Bangalore, March 9-13. LDC outline document, presentations Physics Research Committee, May 11-12 A written report and a presentation are expected ECFA WS, Valencia, November, 2006 prepare ourselfs, FCAL meeting before? INP PAN

  8. Where are we with FCAL -We worked out an advanced design for zero or small crossing angle; -this was accepted and acknowledged in Snowmass and Vienna (Several talks by H. Abramowicz, K. Afanaciev, C.Grah,V.Drugakov, A.Elagin, B. Pawlik, A. Sapronov) -the performance (resolutions, efficiencies, biasas) are understood from simulations for partly realistic detectors -the backscattered background ( into the central detector part) is estimated - Some studies are done for the 20 mrad version (beamstrahlung background, systematics of beamposition) INP PAN

  9. Very Forward Detectors • Detection of Electrons and Photons at very low angle – extend hermeticity Beamstrahlung Depositions: 20 MGy/year Rad. hard sensors e.g. Diamond/W BeamCal • Measurement of the Luminosity with precision (<10-3)using Bhabha scattering • Fast Beam Diagnostics 300 cm VTX FTD LumiCal IP L* = 4m Silicon/W sandwich BeamCal BeamCal LumiCal: 26 < q < 82 mrad BeamCal: 4 < q < 28 mrad PhotoCal: 100 < q < 400 mrad INP PAN R&D for ILC (DESY PRC R&D 02/01): Instrumentation of the Very Forward Region of the ILC Detector

  10. A few topics to be thought Selection of Bhabha events: Energy selection cut • At which energy this cut has to be put? • Theoretical uncertainty • Energy scale uncertainty INP PAN

  11. A few topics to be thought The Bhabha cross section depends on the polarisation • How well is this understood? -higher order corrections • considered in the Monte Carlo INP PAN

  12. A few topics to be thought Electron detection efficiency: Look on Dumping Rings • How stable is this mechanism? • Bunch-to-bunch fluctuations (Contact to machine people ) Algorithm relies on constant bunch charge INP PAN

  13. 20 mrad design • Changes within LDC: • -TPC is shorter • -HCAL should cover • smaller angles • -LumiCal aligned with • or in front of ECAL • -Montage-friendly • -Background on • LumiCal ? • Background in the inner Detector? INP PAN

  14. What has to be done: We need a design for 20 mrad crossing angle -new geometry -repetition of many simulations -studies of backgrounds, beamstrahlung, backscattered into the central detector • We have to understand Bhabha phenomenology in more details -Status of the theory and generators - How influence radiative effects for a given detector the uncertainty of the measurement - Optimised segmentation/structure for LumiCal - Realistic readout scheme INP PAN

  15. 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 design for the prototype O(1000) channels. -Concept for the readout electronics -Concept Design for the ‘fast readout’ and fast diagnostics (related to Eurotev). INP PAN

  16. This meeting at INP • -Reports on many topics mentioned -Discussions on ‘critical’ Issues 20 mrad design more realistic simulations prototyps and testbeam electronics concept preparation of the EUDET kick-off meeting Lets make a WORKshop and see at the end where we’ll go INP PAN

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