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Title: Simulation of absorbed dose rate due to synchrotron radiation and shielding thickness for radiation safety at INDUS-2 using FLUKA
Authors: Sahani, P K
Haridas, G
Sarkar, P K
Keywords: Synchrotron radiation;Shielding hutch;FLUKA
Issue Date: Nov-2012
Publisher: NISCAIR-CSIR, India
Abstract: Indus-2 is a 2.5 GeV electron synchrotron radiation source at Raja Ramanna Centre for Advanced Technology (RRCAT), India. 26 synchrotron radiation (SR) beam lines are planned in Indus-2 for various research applications, Out of 26 several beam lines are in operation and many are in installation stage. Due to intense flux of SR and low energy, the dose rate in the direct beam is high and there is a potential for high radiation exposure. Appropriate shielding hutches are needed to house the beam lines and protect the workers from the radiation hazard. Simulations were carried out using computer code FLUKA to find out the absorbed dose in water due to SR and required shielding thickness in the forward direction to reduce dose within acceptable limits. SR spectrum from Indus-2 in the range 4-100 keV was used for simulating absorbed dose and shielding thickness. It was found that the absorbed dose rate is of the order of 105 Gy/h for the design parameters of Indus-2 (2.5 GeV and 300 mA). Forward shielding thickness of 3mm lead was found to be sufficient to reduce the dose rate to acceptable level for continuously occupied area (<1µSv/h). The details of the simulation and results are presented in the paper.
Page(s): 818-820
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.50(11) [November 2012]

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