Dose 2016

Natural diamond MicroDiamond

• Good water equivalence of Carbon for high energy photon and electron beams

• High sensitivity: 0.5uC/Gy (dimensions can be reduced)

• Low temperature dependence < 1%/K Stable response with accumulated dose (< 0.05% per kGy) •

Natural Diamond (60003-PTW) MicroDiamond (60019-PTW)

Polarization needed (100 V)

No Polarization (Schottky diode conf.)

High response variability between detectors Need of 5 Gy pre-irradiation before each set of measurements (response

Reproducible production

No need of pre-irradiation

drop 19%)

High dark current

Dark current negligible

Dose rate dependence

Low dose rate dependence