Overview of the experiment Collaboration (about 30 physicists at this meeting) Budget Realistic schedule and general status (few words) of each sub-detector.

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Presentation transcript:

Overview of the experiment Collaboration (about 30 physicists at this meeting) Budget Realistic schedule and general status (few words) of each sub-detector (see individual presentations) A. Baldini 11 Jul 03

INFN & Pisa University A. Baldini, C. Bemporad, F.Cei, M.Grassi, F. Morsani, D. Nicolo’, R. Pazzi, F. Raffaelli, F. Sergiampietri, G. Signorelli ICEPP, University of Tokyo Y. Hisamatsu, T. Iwamoto, T. Mashimo, S. Mihara, T. Mori, H. Nishiguchi, W. Ootani, K. Ozone, T. Saeki, R. Sawada, S. Yamada, S. Yamashita KEK, Tsukuba T. Haruyama, A. Maki, Y. Makida, A. Yamamoto, K. Yoshimura Osaka University Y. Kuno Waseda University T. Doke, J. Kikuchi, S. Suzuki, K. Terasawa, A. Yamaguchi, T. Yoshimura Budker Institute, Novosibirsk L.M. Barkov, A.A. Grebenuk, D.G. Grigoriev, B, Khazin, N.M. Ryskulov PSI, Villigen J. Egger, P. Kettle, M. Hildebrandt, S. Ritt The collaboration INFN & Pavia University A.de Bari, P. Cattaneo, G. Cecchet, G. Nardo’, M. Rossella INFN & Genova University S. Dussoni, F. Gatti, D. Pergolesi, R. Valle INFN Roma I D. Zanello INFN & Lecce University S. Spagnolo, C. Chiri, P. Creti, M. Panareo, G. Palama’

Budget (K€) Approved in april Approved in may

Magnet: Construction finished! Construction was finished! Construction was finished! Excitation test has started on June 21th. Excitation test has started on June 21th. Compensation coils Superconducting coil in cryostat Potentiometer Support frame

Jan 2002: Jan 2003: Test Milestone AssemblyDesignManufactoring DesignAss.TestWinding & Cryo. Deliv. PSI Test Field Measurement Platform COBRA Magnet schedule

Platform design status (June 24 th ) beam

Measurements: Phase B – post Triplet 2 & Collimator Phase B – post Triplet 2 & Collimator Phase C – post Solenoid Phase C – post Solenoid Several unexpected problems encountered & Solved !!! Measurements: Phase B – post Triplet 2 & Collimator Phase B – post Triplet 2 & Collimator Phase C – post Solenoid Phase C – post Solenoid Several unexpected problems encountered & Solved !!! “Z-Branch” Measurements April/May2003

Jan Jan 2003: Test Milestone AssemblyDesignManufactoring Studies Solenoid Quadrupoles Target Beam

Photon detector Large prototype successfully operated with purified Xenon at TERAS:  E  2% LP already shipped to PSI: will be better tested by making use of monocromatic photons Need of a liquid hydrogen target Cryostat project is being examined by F. Raffaelli (Pisa) who will follow its construction PMT test facility under construction at Pisa Deficit in the budget for 350 PMTs

Photon Detector schedule Test Milestone AssemblyDesignManufactoring Large PrototypeBeam Test Vessel DesignAssembly & Test PMT Delivery + Testing RefrigeratorManufactoringAssembly Liq. Purification AssemblyTest Manufactoring Engineering runs

Drift chambers Prototypes of cathodes supporting structure Print foils meeting the experimental requirements found Tests at  M1: drift time measurements and cathodes read- out First studies on pattern recognition

Test Milestone AssemblyDesignManufactoring Full Prototype Medium PrototypeCharge division & Cosmics FP Full Detector (18 DC) Jan 2002: Positron Tracker

Test Milestone AssemblyDesignManufactoring Design PMT EvaluationPMT Jan 2002: Timing Counter Tests of fine mesh PMTs (even in magnetic fields) and of counter prototypes (  M1) going on Good solution for transverse detector: scintillating fibers + APDs

Electronics Need of at least two prototypes (both for the trigger and the DRS) First trigger prototype to be tested in september Second DRS design is soon going to be designed

Full System Test Milestone AssemblyDesignManufactoring Prototype Board 2 nd Prototype Jan 2002 Trigger

Test Milestone AssemblyDesignManufactoring 2 nd Prototype Tests1 st Prototype Boards & ChipTest Jan 2002 DRS (DAQ)

Test Milestone AssemblyDesignManufactoring Platform Detector Integration Engineering Runs Jan 2002: Complete Detector Start of the experiment in 2006 All possible engineering runs in 2005

Sensitivity The rate is lowered in order to have ~ 0.5 background events for 1 signal event We confirm our (July 02) estimates of detectors resolutions and therefore our goal of improving the present limit by two orders of magnitudes