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| TUPMA015 |
Radiation Safety Considerations of the Operation of INDUS-1 Synchrotron Radiation Source
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121 |
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- H. Nair, V. Dev, M. K. Nayak, V. Verma, thakkar,k.k. thakkar
RRCAT, Indore (M. P.)
- P. K. Sarkar
DAE/VECC, Calcutta
- D. N. Sharma
Bhabha Atomic Research Centre, Trombay, Mumbai
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Radiological safety aspects of the operation of the electron storage ring, Indus-1 (450 MeV, 100 mA) is described in the paper. The ring is provided with a modular hybrid shielding comprising of mild steel and lead through which synchrotron radiation (SR) beam lines pass out. During the commissioning phase several radiation protection problems like streaming of high-energy bremsstrahlung x-rays, through front ends of SR beam lines, shield joints, its detection and containment were encountered. Experimental measurements on the response of conventional radiation monitors with respect to water phantom were then carried out to evaluate the dose build up factors in the streaming high-energy radiation field. The studies lead to the deduction of correction factors for the monitors for use in Indus-1. Improvement in monitor response on account of spectral degradation through shield and radiation levels during accidental beam loss are other problems, which are evaluated. Details of the radiation protection programme, radiation physics studies, the current status of radiation levels and access control are presented.
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