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Title: Engineering design and development of shielding door and safety shutter for transfer line-3 tunnel of Indus accelerator complex
Authors: Suhane, S K
Haridas, G
Nayak, M K
Verma, Dimple
Banerjee, R S
Chouksey, Sanjay
Singh, Gurnam
Keywords: Radiation shielding;Safety shutter;Indus;Shielding door;Densimet
Issue Date: Nov-2010
Publisher: NISCAIR-CSIR, India
Abstract: Indus accelerator complex houses two synchrotron radiation sources, Indus-1 and Indus-2. Electron beam from booster synchrotron is injected into Indus-2 through transfer line-3 (TL-3). In order to reduce the radiation coming from TL-3 through the door opening to Indus-1, to safe limit, a sliding shielding door has been developed. It is a close welded frame of mild steel with required thickness of shielding material in the form of interlocking lead bricks stacked inside. The door is suspended from an overhead I-beam attached to welded wall brackets, which are fixed to RCC wall using anchor fasteners. Pneumatic drive is used for moving the door. Radiation measurements carried out after the installation show substantial reduction in the radiation field at Indus-1 experimental hall. Another safety concern is the inadvertent transmission of electron beam from booster synchrotron to TL-3. For this purpose a safety shutter has been made. It comprises of a beam absorber made of high density alloy DENSIMET which can be moved in and out of electron beam path. Design, fabrication, installation and testing of sliding shielding door and the beam shutter have been described.
Page(s): 794-797
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.48(11) [November 2010]

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