Radiation resistance and optical properties of lead fluoride Cherenkov crystals

Achenbach, P.; Altarev, I.; Grimm, K.; Hammel, T.; von Harrach, D.; Hoffmann, J.; Hofmann, H.; Kabuss, E.M.; Kobis, S.; Lopes-Ginja, A.

doi:10.1016/S0168-9002(98)00748-7

Radiation resistance and optical properties of lead fluoride Cherenkov crystals

P. Achenbach
(
- Mainz U., Inst. Phys. and
- St. Petersburg, INP
)
,
I. Altarev
(
- Mainz U., Inst. Phys. and
- St. Petersburg, INP
)
,
K. Grimm
(
- Mainz U., Inst. Phys. and
- St. Petersburg, INP
)
,
T. Hammel
(
- Mainz U., Inst. Phys. and
- St. Petersburg, INP
)
,
D. von Harrach
(
- Mainz U., Inst. Phys. and
- St. Petersburg, INP
)

1998

7 pages

Published in:

Nucl.Instrum.Meth.A 416 (1998) 357-363

DOI:

10.1016/S0168-9002(98)00748-7

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Abstract: (Elsevier)

Optical properties of large size lead fluoride (PbF 2 ) crystals of three different manufacturers and their degradation caused by 60 Co γ-radiation have been investigated. Transmission losses have been systematically studied at absorbed energy doses between 0.1 and 7 kGy. Several radiation induced absorption bands have been observed. Optical bleaching with light of wavelengths ≳365 nm has been found very effective to restore the original characteristics even after repeated irradiations. This observation together with the high density and the ultraviolet extended transmission make PbF 2 an excellent choice for high rate and high resolution e.m. calorimetry.

Cherenkov counter: crystal
lead: fluorine
optics: absorption
radiation: energy spectrum
radiation: damage
calorimeter: electromagnetic

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Figures(0)

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