Test results of BM109 magnet field stability during ramping [electronic resource].

Published: Washington, D.C. : United States. Dept. of Energy, 1992.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description: Pages: (11 pages) : digital, PDF file
Additional Creators: Fermi National Accelerator Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary

This report presents results of the measured lag between the current ramp and the following magnetic field rise in BM109 magnets. The purpose of these tests is to choose identical ramping programs for PC4AN1, PC4AN2 and PC4AN3 magnets. The lag occurs due to the large eddy currents in the magnets' solid iron cores. The experiment requires a magnetic field stability of 0.1% during beam presence. Using existing equipment and a program slope of 100 Amp/sec starting at Tl yields fields within the 0.05% of set value. Add to this 0.05% for P.S. regulation to meet the required field stability of 0.1%. This program yields annual savings of $200,000 (assuming 100% usage) . Additional savings can be made by using faster slopes, but this requires additional controls.

Report Numbers

E 1.99:fnal-tm-1816
fnal-tm-1816

Subject(s)

Particle Accelerators

Other Subject(s)

Note

Published through SciTech Connect.
12/01/1992.
"fnal-tm-1816"
"DE93009462"
Kristalinski, A.

Funding Information

AC02-76CH03000

View MARC record | catkey: 14694206