Measured control characteristics of the half-cell 40mm aperture magnet string

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The data presented here were obtained in the course of operating a five 40mm aperture dipole string. The eighty eight meter long string of dipoles was assembled to test the various proposed operational scenarios of the SSCL collider. As reported earlier, there had been a short control and system (data procurement) checkout run performed on an abbreviated two dipole string. The problems that were then uncovered with the exception of the high 20K shield heat load, were corrected. There has been over 5000 hours of running time on the system, 3000 hours on the five magnet string alone, and to ... continued below

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Pages: (10 p)

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McInturff, A.; Flora, R. (Fermi National Accelerator Lab., Batavia, IL (United States)); Weisend, J.G. II; Wallis, D.B. (Superconducting Super Collider Lab., Dallas, TX (United States)) & Dickey, C.E. (Superconducting Super Collider Lab., Dallas, TX (United States) Duke Univ., Durham, NC (United States)) March 1, 1992.

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Description

The data presented here were obtained in the course of operating a five 40mm aperture dipole string. The eighty eight meter long string of dipoles was assembled to test the various proposed operational scenarios of the SSCL collider. As reported earlier, there had been a short control and system (data procurement) checkout run performed on an abbreviated two dipole string. The problems that were then uncovered with the exception of the high 20K shield heat load, were corrected. There has been over 5000 hours of running time on the system, 3000 hours on the five magnet string alone, and to date, no major problems or incidents have occurred. The quench (superconducting to normal transition) performance of the magnet string was excellent, with the exception of four premature quenches that occurred during power supply commissioning. The operational parameters were all found to be manageable or equal to or greater than design. The operational heat loads were within the budget with the exception of the 20K circuit which was a factor of three too high. The relative internal voltages of the magnets have been higher than previously measured in the shorter string by a significant amount. There will be a discussion of concerns and problems plus their possible solution. 6 refs.

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Pages: (10 p)

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OSTI; NTIS; INIS; GPO Dep.

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  • International industrial symposium on the super collider, New Orleans, LA (United States), 4-6 Mar 1992

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  • Other: DE92014145
  • Report No.: FNAL/C-92/77
  • Report No.: SSCL-Preprint--73
  • Report No.: CONF-920331--31
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 5222359
  • Archival Resource Key: ark:/67531/metadc1069758

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  • March 1, 1992

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  • Feb. 4, 2018, 10:51 a.m.

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  • May 9, 2018, 2:42 p.m.

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McInturff, A.; Flora, R. (Fermi National Accelerator Lab., Batavia, IL (United States)); Weisend, J.G. II; Wallis, D.B. (Superconducting Super Collider Lab., Dallas, TX (United States)) & Dickey, C.E. (Superconducting Super Collider Lab., Dallas, TX (United States) Duke Univ., Durham, NC (United States)). Measured control characteristics of the half-cell 40mm aperture magnet string, article, March 1, 1992; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc1069758/: accessed August 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.