Testbeam measurements with diamond sensors. Preliminary results

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Testbeam measurements with diamond sensors. Preliminary results R.Dollan, I. Emeliantchik, E. Kousnetzova, W. Lange, W. Lohmann

SetUp Sr90 diam. scint. Hadronic beam, 3 & 5 GeV Modes: Slow ejection ~105-106 / s fast ejection ~105-107 / ~10ns PA’s : Amptek A250 shaping time ~50 ns noise ~1000 e- (diamond, area) Diamonds : - Freiburg, group#2 (cut substrate) - Freiburg, 4 pads - Element6 4 pads (CCD ~200 mm) - GPI (Moscow) ADC Diamond (+ PA) Scint.+PMT& signal gate & Gate PA discr delay ADC Sr90 PM1 PM2 diam. scint.

Slow ejection 17 s 400 counts in Sc& 400 ms diamond 10x10 mm scint. 5x 5 mm

Slow ejection Preliminary results

105-107 particles/ 10 ns - No PA was needed! Fast ejection 105-107 particles/ 10 ns - No PA was needed! 10 ns 17 s E6 FAP21

Fast ejection Wide range of intensities : PM ‘s estimation: “Very Low Intensity” “Low Intensity” “High Intensity” “Very High Intensity” PM ‘s estimation: LI : VLI ~ 15 HI : LI ~ 13 VHI : HI ~ 3 ~ 600 Intensity measurements : RPhL TL

VERY Preliminary results Fast ejection VERY Preliminary results PMTs all pads pad1 pad2 pad3 pad4

VERY Preliminary results Fast ejection VERY Preliminary results

To be done PMT’s calibration Intensity estimation using PMT’s and dosimetry methods Data treatment…

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