Lead shutter for the IFMIF LIPAc accelerator

Nomen, Oriol; Brañas, B.; Ogando, F.; Arranz, F.; Sauvan, P.; Castellanos, J.

doi:10.1016/j.nima.2018.05.072

Cited by 10 publications

(11 citation statements)

References 10 publications

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“…• Beam profilers: Secondary Emission (SEM) grid for the commissioning at low duty cycle and ionization profile monitor (IPM) and fluorescence profile monitor (FPM) for continuous beam. • A Lead shutter [8], to shield the gamma radiation which comes from the activated BD through the beam tube, allowing access to the accelerator vault when the beam is off. • A scraper [8,11], to reduce particle losses in the chambers inside the BD shield (where due to the high radiation levels no maintenance is possible) and protect them against off-normal too opened beams.…”

Section: Hebt Line Overviewmentioning

confidence: 99%

“…• A Lead shutter [8], to shield the gamma radiation which comes from the activated BD through the beam tube, allowing access to the accelerator vault when the beam is off. • A scraper [8,11], to reduce particle losses in the chambers inside the BD shield (where due to the high radiation levels no maintenance is possible) and protect them against off-normal too opened beams. It has an aperture radius of 57 mm and it is located in the same chamber as the lead shutter.…”

Section: Hebt Line Overviewmentioning

confidence: 99%

“…This work focuses specially on the description of the vacuum chambers that contain the beam along the HEBT line, the vacuum system and the supports. Some components belonging to the HEBT line such as the magnets [5], the diagnostics [6,7], the lead shutter chamber [8] and the BD cartridge remote disconnection system [9], have been or will be described elsewhere. Therefore they are only briefly reported here for the sake of clarity and completeness.…”

Section: Introductionmentioning

confidence: 99%

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Design, manufacturing and tests of the LIPAc high energy beam transport line

et al. 2020

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The International Fusion Materials Irradiation Facility (IFMIF) is a projected accelerator-based, D-Li neutron source for fusion reactor materials qualification. LIPAc (Linear IFMIF Prototype Accelerator) is an accelerator aiming to generate a 125 mA, 9 MeV continuous wave deuteron beam, which is currently being commissioned in Rokkasho (Japan) with the objective of validating the IFMIF accelerator design. In LIPAc, a 10 m long High Energy Beam Transport line (HEBT) will connect the exit of the superconducting linac to the beam dump (BD). The HEBT line must accommodate the diagnostics for beam characterization and open the beam at the end to allow its stopping at the BD. The line contains several magnets to control the beam shape and its trajectory, maintaining beam losses below 1 W m−1 along the beamline to limit activation of surrounding elements and allow hands-on maintenance. In this work, the LIPAc HEBT line project is described since its origins. A summary of the beam dynamics calculations and other studies (vacuum, radioprotection, assembly, alignment) that led to the conceptual design of the line is done. After that, the detailed design of the line is presented, justifying the main design decisions taken and finally, the manufacturing and procurement process and the acceptance tests performed are summarized.

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Section: Hebt Line Overviewmentioning

confidence: 99%

Section: Hebt Line Overviewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design, manufacturing and tests of the LIPAc high energy beam transport line

et al. 2020

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“…The lead shutter is in a multipurpose vacuum chamber just before the Beam Dump (see pneumatic actuator is connected to an extended rod that links with the moving part of the shutter by a captive bolt system that can be operated from the shutter attachment port [224].…”

Section: Rh Maintenance Proceduresmentioning

confidence: 99%

“…It shields the accelerator against the gamma radiation coming from the cartridge copper cone through the beam tube when the beam is off. Additionally, it reduces the dose rates in the part of the accelerator vault, enabling hands-on maintenance[224].…”

mentioning

confidence: 99%