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FCAL Collaboration: High Precision Design & Instrumentation of the Forward Region

This collaboration aims to design and construct a high precision detector for the forward region. The project includes sensor tests, detector simulations, and integration of engineering design considerations. Progress has been made in diamond sensor tests, scintillator readout, electron identification, and more. Future challenges include crossing angle studies and advanced physics background studies.

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FCAL Collaboration: High Precision Design & Instrumentation of the Forward Region

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  1. FCAL Collaboration High precision design Instrumentationof theForwardRegion University of Colorado AGH University, Cracow Instituteof Nuclear Physics, Cracow Jagellonian University, Cracow DESY Joint Institute Nuclear Research Dubna Institute HEP Protvino National Centerof Particle & HEP Minsk Prague Acad. of Science Tel Aviv University Cooperation with:SLAC Iowa State University Wayne State University ECFA - Durham2004 Ronen Ingbir

  2. Luminosity detector Beam monitor Collaboration FCAL High precision design Instrumentation of the Forward Region Goals : design and construction of 2002 - beginning of operation 8/2004 – last collaboration meeting Main 4 months progress: Sensors tests in CERN PS test beam More ‘real life’ detector and physics simulations Integration of engineering design and production considerations ECFA - Durham2004

  3. Scint.+PMT& Diamond (+ PA) gate signal ADC Collaboration FCAL High precision design Diamond sensors tests May,August/2004 test beams CERN PS Hadron beam – 3,5 GeV 2 operation modes: Slow extraction ~105-106 / s fast extraction ~105-107 / ~10ns (Wide range intensities) Diamonds search (CVD): - Freiburg - GPI (Moscow) - Element6 (DeBeers) ECFA - Durham2004 Desy

  4. 1 2 3 4 Collaboration FCAL High precision design Diamond tests Response to MIP High intensity Linearity/Homogeneity PMTs all pads pad1 pad2 pad3 pad4 ECFA - Durham2004 Desy

  5. 120 90 signal from diamond detectors (mV) 60 detector 1 (on waveguide) at SPV23 detector 2 (on diagnostic cross) at SPV23 30 detector 1 (on waveguide) at SPV17 detector 2 (on diagnostic cross) at SPV17 0 0 100 200 300 400 main solenoid current (A) Collaboration FCAL High precision design PITZ beam monitoring ECFA - Durham2004 Minsk-Desy

  6. Collaboration FCAL High precision design Fiber optics readout - small scale prototype Direct Scintillator readout Light yield reduced to 14 ± 4 % Fiber readout ECFA - Durham2004 Desy

  7. Collaboration FCAL High precision design Fiber readout - Geant-4 simulation Direct Scintillator readout Light yield reduced to 8 % Fiber readout ECFA - Durham2004 Desy

  8. Collaboration FCAL High precision design Electron identification in beamcal Efficiency less then 90% ECFA - Durham2004 Minsk-Desy

  9. Collaboration FCAL High precision design Pile up effect 200 GeV Electrons Efficiency less then 90% ECFA - Durham2004 Minsk-Desy

  10. Collaboration FCAL High precision design Electron detection with crossing angle 250 GeV Electron Pair Background BG 250 GeV e- Deposited Energy (arb. Units) Ebg + Eelectron - <Ebg> Si Layers ECFA - Durham2004 SLAC

  11. Collaboration FCAL High precision design Additional background ECFA - Durham2004 Dubna

  12. Collaboration FCAL High precision design Head on Vs. Crossing angle Head on X angle Beamcal Forward Tracking Chamber Silicon vertex detector ECFA - Durham2004 Desy

  13. FTD 1-3 Charged LE Particles Collaboration FCAL High precision design Head on Vs. Crossing angle Backscattering ECFA - Durham2004 Desy

  14. Gas calorimeter - BS photon analysis Collaboration FCAL High precision design IP >100m Good energy resolution (10-15%) 21 radiation length : two absorber thickness (1.5, 3.0 mm) of Pb. High intrinsic radiation hardness GPIG simulation + neural network ECFA - Durham2004 Protvino

  15. Collaboration FCAL High precision design Luminosity calorimeter Theory effort: QED sim. - Cracow EW Loops - DESY Future linear collider precision goal: ΔE~0.31√E L R ECFA - Durham2004 Cracow

  16. Collaboration FCAL High precision design Energy & polar resolution ECFA - Durham2004 Tel Aviv

  17. Out In Eout-Ein P= Eout+Ein Collaboration FCAL High precision design Events selection mechanism 3 cylinders 2 cylinders 1 cylinders ECFA - Durham2004 Tel Aviv

  18. Collaboration FCAL High precision design Dense version optimization 0.1 cm Silicon 0.55 cm Tungsten ECFA - Durham2004 Tel Aviv

  19. Collaboration FCAL High precision design Engineering design and production constrains ECFA - Durham2004 Cracow-Tel Aviv

  20. 0.13e-3 rad 0.11e-3 rad 30 rings 15 cylinders Constant value 4 rings 15 rings 11 rings 10 cylinders 20 cylinders 10cylinders Constant value Collaboration FCAL High precision design Maximum peak shower design Maximum peak shower design Basic Design ECFA - Durham2004 Tel Aviv

  21. Collaboration FCAL High precision design Future challenges Crossing angle study Advanced physics background studies Electronics simulation Comprehensive engineering design considerations integration Small scale prototype building 8/2004 meeting summary Progressin most areasHardware-Software synchronization ECFA - Durham2004

  22. FCAL Collaboration High precision design Collaboration FCAL High precision design Thank you ! You are invited to the more focused talks given by our collaboration in this meeting More detailed information can be found in the 8/2004 collaboration meeting web page : http://www-zeuthen.desy.de/lcdet/ ECFA - Durham2004

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