New measurements of sextupole field decay and snapback effect on Tevatron dipole magnets

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To perform detailed studies of the dynamic effects in superconducting accelerator magnets, a fast continuous harmonics measurement system based on the application of a digital signal processor (DSP) has been built at Fermilab. Using this new system, the dynamic effects in the sextupole field, such as the field decay during the dwell at injection and the rapid subsequent ''snapback'' during the first few seconds of the energy ramp, are evaluated for more than ten Tevatron dipoles from the spare pool. The results confirm the previously observed fast drift in the first several seconds of the sextupole decay and provide additional ... continued below

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3 pages

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Velev, G.V.; Bauer, P.; Carcagno, R.; DiMarco, J.; Lamm, M.; Orris, D. et al. July 1, 2006.

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To perform detailed studies of the dynamic effects in superconducting accelerator magnets, a fast continuous harmonics measurement system based on the application of a digital signal processor (DSP) has been built at Fermilab. Using this new system, the dynamic effects in the sextupole field, such as the field decay during the dwell at injection and the rapid subsequent ''snapback'' during the first few seconds of the energy ramp, are evaluated for more than ten Tevatron dipoles from the spare pool. The results confirm the previously observed fast drift in the first several seconds of the sextupole decay and provide additional information on a scaling law for predicting snapback duration. The information presented here can be used for an optimization of the Tevatron and for future LHC operations.

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3 pages

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  • Presented at European Particle Accelerator Conference (EPAC 06), Edinburgh, Scotland, 26-30 Jun 2006

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  • Report No.: FERMILAB-CONF-06-236-TD
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 892481
  • Archival Resource Key: ark:/67531/metadc875640

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  • July 1, 2006

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  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 30, 2016, 12:56 p.m.

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Velev, G.V.; Bauer, P.; Carcagno, R.; DiMarco, J.; Lamm, M.; Orris, D. et al. New measurements of sextupole field decay and snapback effect on Tevatron dipole magnets, article, July 1, 2006; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc875640/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.