MSU Activities

1. MSU Activities Michael Merkin December, 8, 2005

2. Silicon Lab @ SINP MSU • Main goals: Silicon detectors design and development, Front-end electronics for silicon detectors • 16 year experience on silicon detectors and relation with microelectronic industry • 5 scientists • 6 engineers (electronics, mechanics) • 2 programmers ( on-line, off-line) • 2 technicians

3. Silicon Lab @ SINP MSU • SiLab has almost all necessary equipment for detectors’ measurements. • 2 automatic probe stations (RADAR and A4). • 2 manual probe stations.

4. RADAR Automatic Probe Station

5. RADAR Automatic Probe Station

6. A4 Automatic Probe Station

7. A4 Automatic Probe Station

8. Manual Probe Station

9. Manual Probe Station

10. Silicon Lab @ SINP MSU • Hadron-electron separator @ ZEUS (DESY) • Advanced Thin Ionization Calorimeter (ATIC) - Balloon Experiment • Forward part of D0 (FermiLab) silicon tracker – H-disks • Nose Cone Calorimeter for Phenix experiment at RHIC (BNL)

11. Silicon Lab @ SINP MSU Main Experiments • SVD-2 – open charm experiment on U-70 at IHEP (Protvino) • AMS • ECAL for Future Linear Collider (TESLA) • CBM (Compressed Baryonic Matter) Experiment at GSI (Darmstadt)

12. ATIC Experiment

13. D0 Experiment, FNAL H-disk wedge for D0 Experiment Completed H-disk

14. TESLA/FLC/ILC Sensors • 4” high resistivity wafers • wafer thickness 525 m • sensor size: 62.0+0.0 -0.1 mm • scribe line: 60 m • active area size: 60.0 • the dead zone width is about 1 mm

15. TESLA/FLC/ILC Sensors

16. TESLA/FLC/ILC Sensors

17. TESLA/FLC/ILC Sensors

18. Production Status • Total 233 wafers have been developed • Number of good sensors – 130 • Sensor with high FDV - 57 • We had a few minor problems, but might be, it is because of fraction not good wafers.

19. TESLA/FLC/ILC Sensors

20. TESLA/FLC/ILC Sensors

24. PHENIX Forward Calorimeter

25. PHENIX Forward Calorimeter • Starts at Z - 40 cm • Radial Coverage - 50 cm • Geometrical Depth - 20 cm • Absorber - W • Sampling cells - 22 • Total depth (Rad. length) - ~40 • Expected EM en. Resol. - 20% • Cell size - 1.5*1.5 cm2

26. PHENIX W-Si Forward Calorimeter

27. Calorimeter: Sampling cell design • To avoid • draining bulk current into electronics; • loss of electronics whenever channel trips; • and to save space • Thin film technology used to implement rc-chip on interconnect board Sensors carrier board Absorber (W)

28. Prototype Silicon Wafers For Calorimeter 62 mm 62 mm Si Wafer :4x4 pads of detection (15x15 mm2) 4” High resistive wafer : 5 Kcm Thickness : 500 microns  3 % Tile side : 62.0 + 0.0 - 0.1 mm Guard ring In Silicone ~80 e-h pairs / micron  40000 e- /MiP Capacitance : ~80 pF Leakage current : ~ 5 nA Full depletion bias : <200 V Nominal operating bias : 250 V • ELMA: • Well established technology; • Long production history • Good reputation

29. Calorimeters: g-p0 identifier Y 500 m RC Test structure mask SVX4 RC SVX4 X

30. Prototype w/o FEE

31. Prototype with FEE Boards

32. Prototype with FEE Boards

33. Prototype with FEE Boards

34. Reconstructed Normalized Positron Energy