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

2. SetUp Sr90 diam. scint. Hadronic beam, 3 & 5 GeV Modes:
Slow ejection ~ / s
fast ejection ~ / ~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.

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

4. Slow ejection
Preliminary results

5. 105-107 particles/ 10 ns - No PA was needed!
Fast ejection
particles/ 10 ns - No PA was needed!
10 ns
17 s E6
FAP21

6. 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

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

8. VERY Preliminary results
Fast ejection
VERY Preliminary results

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