engleski

Comparison of high-dose dosimetry systems for radiation damage studies in collider detectors and accelerators

Measurements of absorbed dose in accelerator tunnels around primary beam areas are carried out on a routine basis at CERN. Dosimetric surviellance of high-energy particle accelerators has a great importance for the assessment of the radiation induced damage to materials and components used in high-level radiation areas. Standard dosimeters used at CERN for this purpose are polymer-alanine dosimeters (PAD) and radiphotoluminescent glass dosimeters (RPL). Ethanol-chlorobenzene dosimeters (ECB) for high-dose dosimetry, developed at the Ruđer Bošković Institute (RBI), have several interesting properties making their use in future multi-TeV colliders and detectors promising. These and RPL dosimeters were compared using the CERN alanine dosimetry as the reference system and 60-Co gamma rays as the reference radiation. A very good agreement between the ECB and PAD was obtained for 60-Co gamma irradiation whereas RPL overestimated the dose by about 15%. In mixed accelerator radiation fields the combination of the threee dosimeters opens the possibility to estimate the total dose and the quality of the principal radiations contributing to the total radiation field.

High-dose dosimetry ; accelerator ECB ; gamma rays

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