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TITLE. INVESTIGATION OF A SINGLE CRYSTAL DIAMOND SENSOR AND ITS APPLICATION IN BACKGROUND MEASUREMENTS FOR HERA Wolfgang Lange, DESY Zeuthen. 1. 3rd NoRDHia Workshop @. OUTLINE OF THIS TALK. Motivation The Sensor Measurements Static Measurements Particle Detection (Source)

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  1. TITLE INVESTIGATION OF A SINGLE CRYSTAL DIAMOND SENSOR AND ITS APPLICATION IN BACKGROUND MEASUREMENTS FOR HERA Wolfgang Lange, DESY Zeuthen 1 3rd NoRDHia Workshop @

  2. OUTLINE OF THIS TALK • Motivation • The Sensor • Measurements • Static Measurements • Particle Detection (Source) • Charge Collection during Irradiation • Results • Outlook 2 3rd NoRDHia Workshop @ Wolfgang Lange

  3. Investigation of one of the first available single crystal diamond sensors • Not only measurement of properties but also practical use in an application to achieve experience • Extend this application into environments with radiation load later MOTIVATION 3 3rd NoRDHia Workshop @ Wolfgang Lange

  4. Single Crystal (CVD grown on substrate) by E6 • About 5 by 5 square millimeters • Metallization 3 mm in diameter • Thickness 320 µm • Connected via ultrasonic Al bonding SENSOR 4 3rd NoRDHia Workshop @ Wolfgang Lange

  5. HV Diamond Keithley 487 N2 MEASUREMENTS (1) 5 3rd NoRDHia Workshop @ Wolfgang Lange

  6. MEASUREMENTS (2) 6 3rd NoRDHia Workshop @ Wolfgang Lange

  7. Charge Collection Distance: MEASUREMENTS (3) CCD reaches maximum @ 50V (100% efficiency, thickness = 320 µm) 7 3rd NoRDHia Workshop @ Wolfgang Lange

  8. Charge Collection Distance: MEASUREMENTS (4) CCD @ 80V (100% efficiency, thickness = 320 µm), measured for low doses (Sr90) 8 3rd NoRDHia Workshop @ Wolfgang Lange

  9. 100% charge collection efficiency, CCD = thickness • Stable for low doses • Clearly separated spectrum of minimal ionizing particles • 1 mip results in 11.5 ke- (1.84 fC) RESULTS 9 3rd NoRDHia Workshop @ Wolfgang Lange

  10. application of this sensor in particle counting: • use of a preamplifier, put it in a box, interface electronics • appointed application: radiation monitor (HERA, Zeus) OUTLOOK 10 3rd NoRDHia Workshop @ Wolfgang Lange

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