Diamond detectors: a few facts, test beams and summer plans

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15 Νοε 2013 (πριν από 3 χρόνια και 10 μήνες)

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Diamond detectors: a few facts, test
beams and summer plans

Marina Artuso

June 15, 2010

1

Marina Artuso SU Velo Meeting

Nomenclature

June 15, 2010

Marina Artuso SU Velo Meeting

2

Top/substrate/big



Bottom/growth/small

Comparison between tests @ OSU and SU

June 15, 2010

Marina Artuso SU Velo Meeting

3

sensor

side

hv

CCL

OSU
(
m
m)


CCL

OSU
(
m
m)

[+HV]

207
-
2

growth

500

245

171

1000

260

substrate

500

216

1000

230

207
-
3

growth

500

224

166

(tested

with

1000

253

Beam)

substrate

500

238

1000

270

June 15, 2010

Marina Artuso SU Velo Meeting

4

detector

side

hv

CCL

OSU
(
m


䍃䰠LU
(
m
m)

207
-
4

growth

500

199

178

1000

225

substrate

500

214

1000

240

207
-
5

growth

500

165

157

1000

180

substrate

500

235

1000

265

Note:

HV data should be closer to the data at OSU

Note: effect of pumping?

Note: more powerful source used at OSU + collimation

Study of charge collection properties

June 15, 2010

Marina Artuso SU Velo Meeting

5

The “grazing angle technique” developed to study the field/charge collection
properties of heavily irradiated silicon can shed light on the charge
collection/field distribution inside the diamond. An angle of 13
°

corresponds to 64 strips being illuminated. We can get the whole 128 strips
in 2 attempts. Efficiency issue: active area 0.3X1.4 cm^2 (1/2 of normal
incidence with 128 strips).

Towards the next test beam

June 15, 2010

Marina Artuso SU Velo Meeting

6


We need to understand reason why plate 3 does not hold
1000 HV.


We need to understand properties of plate 5, could be
the best candidate for next strip deposition (with SU
mask)


Calculate time requirements for the normal
incidence/grazing angle data to time order
and prioritize

Towards the next test beam: THE WISH
LIST

June 15, 2010

Marina Artuso SU Velo Meeting

7


Complete characterization of plate 3 at normal incidence,
at 500, 1000 V, both polarities.


Orient sensor at 15
°

with respect beam axis