Talk by Rihua Mao on Gamma-ray Induced Radiation ... - Caltech

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Very Different Damage RecoveryPWO: 3 components: a few tens hours, a few thousand hours and a longerone equivalent to no recovery. LSO/LYSO: no recovery at room temperature.Dose rate dependent damageNo dose rate dependence10/28/2009 NSS09 Paper N32-5, <strong>Rihua</strong> <strong>Mao</strong>, Caltech6
Damage may Depend on Dose RateA simple model waspublished in NIM A 332(1993) 113-120 for thekinetics of radiationinduced color centerdensities in crystalscintillators. It was used toexplain the dose ratedependent damage forPWO crystals in a paperpresented in NSS96 andpublished in IEEE Trans.Nucl. Sci., Vol. 44 (1997)468-476.10/28/2009 NSS09 Paper N32-5, <strong>Rihua</strong> <strong>Mao</strong>, Caltech7
Page 1 and 2: ɣ-Ray Induced Radiation Damagein P
Page 3 and 4: SamplesLSO/LYSO samples: 2 x 2 x 20
Page 5: No Damage on Photo-luminescenceNo d
Page 9 and 10: Damage on Optical Transmission-2Emi
Page 11 and 12: Damage of Light Output-1PWO: dose r
Page 13 and 14: Damage of Light Output-325.6% loss
Page 15 and 16: ɣ-ray Induced PhosphorescencePWO a
Page 17 and 18: ɣ-ray Induced Readout Noise-2ɣ-ra
Page 19: Summary‣ ɣ-ray induced radiation

Talk by Rihua Mao on Gamma-ray Induced Radiation ... - Caltech

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