overview of the experiment collaboration (about 30 physicists at this meeting) budget realistic...
DESCRIPTION
Budget (K€) Approved in april Approved in mayTRANSCRIPT
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. YamashitaKEK, Tsukuba T. Haruyama, A. Maki, Y. Makida, A. Yamamoto, K. YoshimuraOsaka 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€)Calorimeter PMT 1756Lxe 845Vessel 400Various items 271Xe system 369Cobra Magnet 1175
Timing counter 700Trigger 400
Drift Chambers 149Muon transport 184DAQ Electronics 405Detector 172HV 39
6865
Japan 2529Italy 2200PSI 1299
6028
Running costs - 2008 1303
Approved in aprilApproved in may
2003-2005
Magnet: Construction finished!• Construction was finished!Construction was finished!• Excitation test has started on June 21th.Excitation test has started on June 21th.
Compensation coilsCompensation coilsSuperconducting coil in cryostatSuperconducting coil in cryostat
PotentiometerPotentiometer
Support frameSupport frame
Jan 2002:2002 2003 2004 2005
Jan 2003: Test MilestoneAssemblyDesign Manufactoring
Design Ass. TestWinding & Cryo.
Deliv.PSI Test
Field Measurement
Platform
COBRA Magnet schedule
Platform design status (June 24th)
beam
Measurements:Measurements: Phase B – post Triplet 2 & CollimatorPhase B – post Triplet 2 & Collimator Phase C – post SolenoidPhase C – post SolenoidSeveral unexpected problems encountered & Solved !!!Several unexpected problems encountered & Solved !!!
“Z-Branch” Measurements April/May2003
Jan 20022002 2003 2004 2005
Jan 2003: Test MilestoneAssemblyDesign Manufactoring
Studies
Solenoid
Quadrupoles
Target
Beam
Photon detector
•Large prototype successfully operated with purified Xenon at TERAS: E2%•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 schedule2002 2003 2004 2005
Test MilestoneAssemblyDesign Manufactoring
Large Prototype Beam Test Beam Test
Vessel Design Assembly & Test
PMT Delivery + Testing
Refrigerator Manufactoring Assembly
Liq. Purification
Assembly Test
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
2002 2003 2004 2005
Test MilestoneAssemblyDesign Manufactoring
Full Prototype
Medium PrototypeCharge division & Cosmics
FP FP
Full Detector (18 DC)
Jan 2002: Positron Tracker
2002 2003 2004 2005
Test MilestoneAssemblyDesign Manufactoring
Design
PMT Evaluation PMT
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
2002 2003 2004 2005
Test MilestoneAssemblyDesign Manufactoring
Prototype Board
2nd Prototype
Jan 2002 Trigger
2002 2003 2004 2005
Test MilestoneAssemblyDesign Manufactoring
2nd Prototype
Tests1st Prototype
Boards & Chip Test
Jan 2002 DRS (DAQ)
2002 2003 2004 2005
Test MilestoneAssemblyDesign Manufactoring
Platform
DetectorIntegration
EngineeringRuns
Jan 2002: Complete Detector
•Start of the experiment in 2006•All possible engineering runs in 2005
Sensitivity
)sresolutionworst 102.0for 106.1 and 106.5(
101 oflimit upper C.L. 90% a toingcorrespond 108.381314
1314
R
SES
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