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Diamond Detectors

Diamond Detectors. Ewald Effinger BI-BI-BL. Diamond Detector Types. pCVD sCVD pCVD = polycrystalline Chemical Vapor Deposition ( 10x10 mm 2 x 0.5 mm) sCVD = single-crystal Chemical Vapor Deposition ( 5x5 mm 2 x 0.5 mm). Why Diamond Detectors. Measurement of fast beam losses

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Diamond Detectors

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  1. Diamond Detectors Ewald Effinger BI-BI-BL

  2. Diamond Detector Types pCVD sCVD pCVD = polycrystalline Chemical Vapor Deposition (10x10 mm2 x 0.5 mm) sCVD = single-crystal Chemical Vapor Deposition (5x5 mm2 x 0.5 mm)

  3. Why Diamond Detectors • Measurement of fast beam losses • ns second response time • Bunch by bunch structure • Radiation tolerant detector type • Low maintenance • Constant operating conditions • Small dimensions • easier positioning in areas with space limitation • Well known response signal • Detector tested under many conditions for verification of the performance • High dynamic range ~ 8 order of magnitude • Linear response to particle flux

  4. BLMD (type Cividec) • Detector AC/DC Splitter 2 GHz Amplifier • pCVD detector: with high voltage and signal connection • AC-DC-Splitter: to separate AC signal current from DC leakage current • 2 GHz / 20 dB Broadband Amplifier ( various amplifier available ) • Housing: internal HF copper housing + aluminum housing for mechanical protection

  5. Principle of Civitec detector Ch1 Scope Ch2 Diamond Detector • Detector on Support plate • High and Low Voltage Supply • Controlled via ET-7026 Ethernet Controller • 1 GHz Waverunner from LeCroy • Readout via FESA Application from S.B. Pedersen ~ 100m CK50 6 dB Power splitter

  6. BLMD (BCM1F CMS / DESY Zeuten) • sCVD detector: mounted on the analogue optical link • analogue optical link mounted on support PCB including radiation tolerant voltage regulator and test pulse generator • Housing with Burndy-8 with high and low voltage supply • E-2000 connector for optical signal

  7. Principle of BCM1F • Detector description • sCVD detector with a bias voltage 125 V • Fast amplifier (rad tolerant) • Analogue optical link LLD form the MIC • Optical single mode fiber of around 2km • Analogue Receiver (865-RA-04) • ADC CEAN 1721 • Discriminator • TDC CEAN • RTH • Local PC for data treatment

  8. Measurement results Cividec Measurement from September 2011 (BMLED.04R8.B2E10_TCTVB.4R8.B2)

  9. Measurement results Cividec Measurement from December 2012 (BLMED.06L7.B1E10_ TCHSS.6L7.B1) Courtesy of Erich Griesmayer (Cividec)

  10. Measurement results BCM1F Arrival Time Histogram from Losses downstream at Collimator in Point 8 Losses from beam and interaction 50 ns bunch spacing Losses from beam

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