Conceptual design of an L-band recirculating superconducting traveling wave accelerating structure for ILC

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With this paper, we propose the conceptual design of a traveling wave accelerating structure for a superconducting accelerator. The overall goal is to study a traveling wave (TW) superconducting (SC) accelerating structure for ILC that allows an increased accelerating gradient and, therefore reduction of the length of the collider. The conceptual studies were performed in order to optimize the acceleration structure design by minimizing the surface fields inside the cavity of the structure, to make the design compatible with existing technology, and to determine the maximum achievable gain in the accelerating gradient. The proposed solution considers RF feedback system redirecting ... continued below

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3 pages

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Avrakhov, P.; Kanareykin, A.; Liu, Z.; Kazakov, S.; /KEK, Tsukuba; Solyak, N. et al. June 1, 2007.

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With this paper, we propose the conceptual design of a traveling wave accelerating structure for a superconducting accelerator. The overall goal is to study a traveling wave (TW) superconducting (SC) accelerating structure for ILC that allows an increased accelerating gradient and, therefore reduction of the length of the collider. The conceptual studies were performed in order to optimize the acceleration structure design by minimizing the surface fields inside the cavity of the structure, to make the design compatible with existing technology, and to determine the maximum achievable gain in the accelerating gradient. The proposed solution considers RF feedback system redirecting the accelerating wave that passed through the superconducting traveling wave acceleration (STWA) section back to the input of the accelerating structure. The STWA structure has more cells per unit length than a TESLA structure but provides an accelerating gradient higher than a TESLA structure, consequently reducing the cost. In this paper, the STWA cell shape optimization, coupler cell design and feedback waveguide solution are considered. We also discuss the field flatness in the superconducting TW structure, the HOM modes and multipactor performance have been studied as well. The proposed TW structure design gives an overall 46% gain over the SW ILC structure if the 10 m long TW structure is employed.

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3 pages

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  • Journal Name: Conf.Proc.C070625:2538,2007; Conference: Presented at Particle Accelerator Conference (PAC 07), Albuquerque, New Mexico, 25-29 Jun 2007

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  • Report No.: FERMILAB-CONF-07-254-TD
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 922026
  • Archival Resource Key: ark:/67531/metadc898638

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • June 1, 2007

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 5, 2016, 1:10 p.m.

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Avrakhov, P.; Kanareykin, A.; Liu, Z.; Kazakov, S.; /KEK, Tsukuba; Solyak, N. et al. Conceptual design of an L-band recirculating superconducting traveling wave accelerating structure for ILC, article, June 1, 2007; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc898638/: accessed October 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.