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sCVD Diamond for the CMS Pixel Detector

sCVD Diamond for the CMS Pixel Detector. R.Stone, Rutgers J.Doroshenko, L.Perera, S.Schnetzer. Overview of CMS Pixels Testing Starting min-Aug. at CERN SPS Testing at FNAL Q4 2004 Summary. RD42 Collaboration Meeting. 14--15 May 2004. Vers 1.2. CMS Pixel Detector.

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sCVD Diamond for the CMS Pixel Detector

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  1. sCVD Diamond for the CMS Pixel Detector R.Stone, Rutgers J.Doroshenko, L.Perera, S.Schnetzer • Overview of CMS Pixels • Testing Starting min-Aug. at CERN SPS • Testing at FNAL Q4 2004 • Summary RD42 Collaboration Meeting 14--15 May 2004 Vers 1.2

  2. CMS Pixel Detector Total 70M Pixels 10-20 thousand cm2 of active sensors

  3. CERN SPS Testbeams: Aug 04, Oct 04 • Piggy-back on PSI-Zurich testbeam telescope and analysis • Sensor only test: PSI30 readout chip in “transparent” mode • Pixel size: 125x125 microns • Edge-on or Vertical orientation to beam • In 3Tesla field to study Lorenz drift • Use sCVD diamond and compare to equiv. silicon detectors • Need ~2 ‘small’ sCVD diamond pieces > 3x5 cm2: • Aug. test un-irradiated sensors • Sep. irradiate sensors • Oct test irradiated sensors

  4. The Test Beam Setup Beam telescope and pixel setup view. X2,Y2 plane (50mm) X3,Y3 plane (50mm) X1,Y1 plane(50mm) X4,Y4 plane (50mm) Beam, Magnetic field Pixel Array (22x32) of 125mmx125mm one pixel size Trigger PIN diode(3x6mm)

  5. The test beam setup Beam telescope and pixel installed between two Helmholtz coils, maximum magnetic field 3T, and pixel is cooled down by Peltier cooler.

  6. CERN H2 SPS Test Beam Measurements • 900 between pixel plane and the beam, no magnetic filed, to study charge collection efficiency, signal, noise; • 150 between pixel plane and beam, no magnetic filed to study depletion depth, trapping effects, also for alignment for the Lorentz angle measurements; • 150 between pixel plane and beam, 3T magnetic filed to study Lorentz angle

  7. Fermilab Testbeam Fall 04 • Use final version of readout chip: PSI46 • Test of pixel detector: Sensor and readout chip together • Pixel size: 100x150 microns • Irradiated vs non-irradiated detectors: Silicon and Diamond • Rutgers telescope: 1 micron extrapolated track resolution • 1-2 KHz DAQ rate (but spill is 0.7s every 60s!) • Use sCVD diamond and compare to equiv. Silicon detectors • Hit efficiency • Position Resolution • Threshold minimization • Need 1 or 2 sCVD diamond pieces 1 cm2

  8. Cosmo - Hardware: PSI 46

  9. Cosmo Pixel GUI

  10. Cosmo DAC screen

  11. Cosmo ADC Tool

  12. Testbeam Run Control Gui

  13. FNAL Testbeam DAQ Overview

  14. PSI43 Calibration Analysis

  15. Pulser Calibration analysis IZM 34B chip0 (1x2) at T=-20C Address levels, Charge Thresh, Pedestal, Gain

  16. Summary • Two testbeam oportunities in the coming months: • CERN SPS: Diamond vs Silicon sensor comparison • Lorentz angel • Resolution • Signal / Noise • FNAL: Sensor + Final Readout chip • Hit Efficiency / Threshold • Resolution • Need 2 smaller sCVD for CERN (small ROC), • 1-2 larger pieces for FNAL (final ROC)

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