Detailed mechanical design of the LIPAc beam dump radiological shielding

► Mechanical design of the IFMIF LIPAc beam dump shielding has been performed. ► Lead shutter design performed to shield radiation from beam dump when LIPAc is off. ► External loads, working and dismantling conditions, included as design constraints. The LIPAc is a 9MeV, D+ linear prototype accelera...

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Bibliographic Details
Published in:Fusion engineering and design 2013-10, Vol.88 (9-10), p.2723-2727
Main Authors: Nomen, Oriol, Martínez, José I., Arranz, Fernando, Iglesias, Daniel, Barrera, Germán, Brañas, Beatriz, Ogando, Francisco, Molla, Joaquín, Sanmartí, Manel
Format: Article
Language:English
Subjects:
Acceleradors de partícules
Accelerators
Activation
Beams (radiation)
Copper
Física
Física de partícules
Gamma radiation
Gamma rays
IFMIF
Linear accelerator
LIPAc
Mechanical design
Polyethylenes
Projectes i construcció
Prototypes
Shielding
Shutters
Surface chemistry
Àrees temàtiques de la UPC
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Summary:► Mechanical design of the IFMIF LIPAc beam dump shielding has been performed. ► Lead shutter design performed to shield radiation from beam dump when LIPAc is off. ► External loads, working and dismantling conditions, included as design constraints. The LIPAc is a 9MeV, D+ linear prototype accelerator for the validation of the IFMIF accelerator design. The high intensity, 125mA CW beam is stopped in a copper cone involving a high production of neutrons and gamma radiation and activation of its surface. The beam stopper is surrounded by a shielding to attenuate the resulting radiation so that dose rate values comply with the limits at the different zones of the installation. The shielding includes for that purpose polyethylene rings, water tanks and gray cast iron rings. A lead shutter has also been designed to shield the gamma radiation that comes through the beam tube when the linear accelerator is not in operation, in order to allow access inside the building for maintenance tasks. The present work summarizes the detailed mechanical design of the beam dump shielding and the lead shutter taking into account the design constraints, such as working conditions and other external loads, as well as including provisions for dismantling.
ISSN:0920-3796
1873-7196
DOI:10.1016/j.fusengdes.2013.01.105