1. I nstrumentation of the F orward R egion Collaboration High precision design ECFA - Durham2004 University of Colorado AGH University, Cracow I nstitute of N uclear P hysics, Cracow Jagellonian University, Cracow DESY J oint I nstitute N uclear R esearch Dubna I nstitute HEP Protvino N ational C enter of P article & HEP Minsk Prague Acad. of Science Tel Aviv University Cooperation with: SLAC Iowa State University Wayne State University Ronen Ingbir

2. Collaboration High precision design ECFA - Durham2004 Goals : design and construction of Instrumentation of the Forward Region Luminosity detector Beam monitor 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

3. May,August/2004 test beams CERN PS Hadron beam – 3,5 GeV 2 operation modes: Slow extraction ~10 5- 10 6 / s fast extraction ~10 5 -10 7 / ~10ns (Wide range intensities) Diamonds search (CVD): - Freiburg - GPI (Moscow) - Element6 (DeBeers) ADC Diamond (+ PA) Scint.+PMT& signal gate ECFA - Durham2004 Diamond sensors tests Desy Collaboration High precision design

4. PMTsall pads pad1 pad2 pad3 pad4 12 34 High intensity Linearity/Homogeneity ECFA - Durham2004 Diamond tests Desy Response to MIP Collaboration High precision design

5. ECFA - Durham2004 PITZ beam monitoring Minsk-Desy Collaboration High precision design

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

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

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

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

10. 250 GeV e- BG Si Layers Pair Background 250 GeV Electron E bg + E electron - Deposited Energy (arb. Units) SLAC ECFA - Durham2004 Electron detection with crossing angle Collaboration High precision design

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

12. ECFA - Durham2004 Desy Silicon vertex detector F orward T racking C hamber Head on Vs. Crossing angle Head onX angle Beamcal Collaboration High precision design

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

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

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

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

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

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

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

20. Constant value 0.11e-3 rad 0.13e-3 rad Maximum peak shower design Basic Design 20 cylinders 10 cylinders 4 rings15 rings11 rings 10 cylinders 30 rings 15 cylinders ECFA - Durham2004 Maximum peak shower design Tel Aviv Collaboration High precision design

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

22. Collaboration High precision design ECFA - Durham2004 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/ Collaboration High precision design