About the mechanics of SSC dipole magnet prototypes

Conference · Fri Nov 01 04:00:00 EST 1991

OSTI ID:10110992

Devred, A; Bush, T; Coombes, R; DiMarco, J; Goodzeit, C; Kuzminski, J; Puglisi, M; Radusewicz, P; Sanger, P; Schermer, R; Spigo, G; Tompkins, J; Turner, J; Wolf, Z; Yu, Y; Zheng, H ^[1]; Ogitsu, T ^[1]; Anerella, M; Cottingham, J; Ganetis, G ; Garber, M; Ghosh, A; Greene, A; Gupta, R; Herrera, J; Kahn, S; Kelly, E; Meade, A; Morgan, G; Muratore, J; Prodell, A; Rehak, M; Rohrer, E P; Sampson, W; Shutt, R; Thompson, P; Wanderer, P; Willen, E ^[2]; Bleadon, M; Hanft, R; Kuchnir, M; Mantsch, P; Mazur, P O; Orris, D; Peterson, T; Strait, J ^[3]; Royet, J; Scanlan, R; Taylor, C ^[4]

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1. Superconducting Super Collider Lab., Dallas, TX (United States)
2. Brookhaven National Lab., Upton, NY (United States)
3. Fermi National Accelerator Lab., Batavia, IL (United States)
4. Lawrence Berkeley Lab., CA (United States)

During the last two years, nine 4-cm-aperature, 17-m-long dipole magnet prototypes were produced by Brookhaven National Laboratory (BNL) under contract with the Superconducting Super Collider (SSC) Laboratory. These prototypes are the last phase of a half-decade-long R&D program, carried out in collaboration the Fermi National Accelerator Laboratory and Lawrence Berkeley Laboratory, and aimed at demonstrating the feasibility of the SSC main-ring dipole magnets. They also lay the groundwork for the 5-cm-aperture dipole magnet program now underway. After reviewing the design features of the BNL 4-cm-aperature, 17-m-long dipole magnets, we describe in detail the various steps of their fabrication. For each step, we discuss the parameters that need to be mastered, and we compare the values that were achieved for the nine most recent prototypes. The data appear coherent and reproducible, demonstrating that the assembly process is under control. We then analyze the mechanical behavior of these magnets during cooldown and excitation, and we attempt to relate this behavior to the magnet features. The data reveal that the mechanical behavior is sensitive to the collar-yoke interference and that the magnets exhibit somewhat erratic changes in coil end-loading during cooldown.

• Research Organization: Superconducting Super Collider Lab., Dallas, TX (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC35-89ER40486
• OSTI ID: 10110992
• Report Number(s): SSCL-Preprint--6; LBL--31571; FNAL/Pub--91/330; CONF-8908289--1; ON: DE92004526
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303
665412
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
APERTURES
DESIGN
EXPERIMENTAL FACILITIES AND EQUIPMENT
FABRICATION
MAGNETIC DIPOLES
MAGNETIC PROPERTIES
MECHANICAL PROPERTIES
QUENCHING
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
SUPERCONDUCTING SUPER COLLIDER