SUPERCONDUCTING HELICAL SNAKE MAGNETS: CONSTRUCTION AND MEASUREMENTS.

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In order to collide polarized protons, the RHIC project will have two snakes in each ring and four rotators around each of two interaction regions. Two snakes on opposite sides of each ring can minimize depolarization during acceleration by keeping the spin tune at a half. Since the spin direction is normally along the vertical direction in a flat ring, spin rotators must be used around an interaction point to have longitudinal polarization in a collider experiment. Each snake or rotator will be composed of four helical dipoles to provide the required rotation of spin with minimal transverse orbit excursions ... continued below

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8 pages

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MACKAY,W.W. May 17, 1999.

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In order to collide polarized protons, the RHIC project will have two snakes in each ring and four rotators around each of two interaction regions. Two snakes on opposite sides of each ring can minimize depolarization during acceleration by keeping the spin tune at a half. Since the spin direction is normally along the vertical direction in a flat ring, spin rotators must be used around an interaction point to have longitudinal polarization in a collider experiment. Each snake or rotator will be composed of four helical dipoles to provide the required rotation of spin with minimal transverse orbit excursions in a compact length of 10m. The basic helical dipole is a superconducting magnet producing a transverse dipole field which is twisted about the magnet axis through 360{degree} in a length of 2.4 m. The design and construction of the magnets is described in this paper.

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8 pages

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INIS; OSTI as DE00014642

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  • POLARIZED PROTONS AT HIGH ENERGIES - ACCELERATOR CHALLENGES AND PHYSICS OPPORTUNITIES, HAMBURG (DE), 05/17/1999--05/20/1999

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  • Report No.: BNL--66760
  • Report No.: KA0403
  • Grant Number: AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 14642
  • Archival Resource Key: ark:/67531/metadc624594

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Office of Scientific & Technical Information Technical Reports

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  • May 17, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Nov. 9, 2015, 8:57 p.m.

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MACKAY,W.W. SUPERCONDUCTING HELICAL SNAKE MAGNETS: CONSTRUCTION AND MEASUREMENTS., article, May 17, 1999; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc624594/: accessed October 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.