Beam loss and collimation in the Fermilab 16 GeV proton driver

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A high beam power of 1.15 MW in the proposed 16-GeV Proton Driver [1] implies serious constraints on beam losses in the machine. The main concerns are the hands-on maintenance and ground-water activation. Only with a very efficient beam collimation system can one reduce uncontrolled beam losses to an allowable level. The results on tolerable beam loss and on a proposed beam collimation system are summarized in this paper. A multi-turn particle tracking in the accelerator defined by all lattice components with their realistic strengths and aperture restrictions, and halo interactions with the collimators is done with the STRUCT code ... continued below

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199 Kilobytes pages

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Alexandr I. Drozhdin, Oleg E. Krivosheev and Nikolai V. Mokhov July 20, 2001.

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A high beam power of 1.15 MW in the proposed 16-GeV Proton Driver [1] implies serious constraints on beam losses in the machine. The main concerns are the hands-on maintenance and ground-water activation. Only with a very efficient beam collimation system can one reduce uncontrolled beam losses to an allowable level. The results on tolerable beam loss and on a proposed beam collimation system are summarized in this paper. A multi-turn particle tracking in the accelerator defined by all lattice components with their realistic strengths and aperture restrictions, and halo interactions with the collimators is done with the STRUCT code [2]. Full-scale Monte Carlo hadronic and electromagnetic shower simulations in the lattice elements, shielding, tunnel and surrounding dirt with realistic geometry, materials and magnetic field are done with the MARS14 code [3]. It is shown that the proposed 3-stage collimation system, allows localization of more than 99% of beamloss in a special straight section. Beam loss in the rest of the accelerator is 0.2 W/m on average.

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199 Kilobytes pages

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  • Particle Accelerator Conference 2001, Chicago, IL (US), 06/18/2001--06/22/2001

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  • Report No.: FERMILAB-Conf-01/128
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 783054
  • Archival Resource Key: ark:/67531/metadc715293

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  • July 20, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • April 1, 2016, 3:40 p.m.

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Alexandr I. Drozhdin, Oleg E. Krivosheev and Nikolai V. Mokhov. Beam loss and collimation in the Fermilab 16 GeV proton driver, article, July 20, 2001; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc715293/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.