Published July 1992 | Version v1
Report Restricted

Influence of cable eddy currents on magnetic field harmonics

Creators

  • 1. National Lab. for High Energy Physics, Tsukuba, Ibaraki (Japan)
  • 2. Superconducting Super Collider Lab., Dallas, TX (United States)

Description

Several SSC 5-cm-aperture, 15-m-long dipole magnet prototypes exhibit anomalous behavior of their magnetic field harmonics during current ramps at 4 A/s. the anomalies cease when the ramp is stopped and the current is held constant. The magnets also exhibit a dramatic degradation of their quench current as a function of ramp rate, as well as large AC-losses. After reviewing the AC-performance of the anomalous magnets we develop a model of cable eddy currents, which simulate the observed field behavior and the measured AC-losses, and which is consistent with the quench start localization of the high ramp-rate quenches

Availability note (English)

MF available from INIS under the Report Number; OSTI as DE92040548; NTIS; INIS; US Govt. Printing Office Dep.

Files

Restricted

The record is publicly accessible, but files are restricted to users with access.

Additional details

Publishing Information

Imprint Pagination
6 p.
Report number
SSCL-Preprint--134

Conference

Title
ICFA workshop on AC superconductivity.
Dates
23-25 Jun 1992.
Place
Tsukuba, Ibaraki (Japan).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
24019403
Subject category
S43: PARTICLE ACCELERATORS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
APERTURES; EDDY CURRENTS; HARMONICS; MAGNETIC FIELDS; PERFORMANCE; SUPERCONDUCTING CABLES; SUPERCONDUCTING MAGNETS; SUPERCONDUCTING SUPER COLLIDER
Descriptors DEC
ACCELERATORS; CABLES; CONDUCTOR DEVICES; CURRENTS; CYCLIC ACCELERATORS; ELECTRIC CABLES; ELECTRIC CURRENTS; ELECTRICAL EQUIPMENT; ELECTROMAGNETS; EQUIPMENT; MAGNETS; OPENINGS; OSCILLATIONS; STORAGE RINGS; SUPERCONDUCTING DEVICES; SYNCHROTRONS

Optional Information

Contract/Grant/Project number
Contract AC35-89ER40486
Funding organization
USDOE, Washington, DC (United States).
Secondary number(s)
CONF-9206281--1.