Radiation stability of plastic scintillators and wave-length shifters

Author

Holm, U. ; Wick, K.

Author_Institution

I. Inst. fur Experimentalphys., Hamburg Univ., West Germany

Volume

36

Issue

1

fYear

1989

fDate

2/1/1989 12:00:00 AM

Firstpage

579

Lastpage

583

Abstract

The radiation stability of plastic scintillators and wave-length shifters for the calorimeter of the ZEUS detector at HERA has been investigated by irradiating them with low energy protons and a Co γ-source. Changes in light yield and absorption length have been measured with a xenon flash lamp. Absorbed total doses were 0.1-25 kGy for dose rates of 0.03 up to 10 kGy/h. Different surrounding atmospheres have been applied. The scintillator SCSN-38 shows a strong decrease of the absorption length with a fast recovery in air to a low permanent damage. The permanent loss in light yield is 4% for a dose of 10 kGy. The WLS Y-7 and K-27 dissolved in PMMA have small permanent damages in air and strong ones in nitrogen where no recovery takes place. Dose rate effects have not been seen either for the SCI or for the WLS

Keywords

gamma-ray effects; plastics; scintillation counters; HERA; SCSN-38; ZEUS detector; absorption length; calorimeter; light yield; permanent damages; plastic scintillators; radiation stability; recovery; wave-length shifters; Atmospheric measurements; Electromagnetic wave absorption; Gamma ray detection; Gamma ray detectors; Gas detectors; Length measurement; Plastics; Protons; Radiation detectors; Stability;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.34504

Filename

34504