Ramping of solid iron analysis magnets in experimental areas: BM109 preliminary results

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The long main ring TeV pulse period of 60 sec with a 20 sec flattop makes it attractive to ramp solid iron magnets, such as BM109's, etc., in synchronisms with the main ring pulse. Annual energy cost savings for a BM109 could be up to a maximum of $6.6 per hour or %58,000 per year. Are there 10 or more magnets we could ramp. What is the lag between the magnet excitation current and the magnet field. It is probably small because these magnets have large air gaps and therefore relatively short (short of one second) time constants. Some preliminary ... continued below

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Pages: 12

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Visser, A.T. January 15, 1988.

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Description

The long main ring TeV pulse period of 60 sec with a 20 sec flattop makes it attractive to ramp solid iron magnets, such as BM109's, etc., in synchronisms with the main ring pulse. Annual energy cost savings for a BM109 could be up to a maximum of $6.6 per hour or %58,000 per year. Are there 10 or more magnets we could ramp. What is the lag between the magnet excitation current and the magnet field. It is probably small because these magnets have large air gaps and therefore relatively short (short of one second) time constants. Some preliminary measurements showing the lag between the excitation current and the magnet field for a BM109 are included. Ramping BM109's seems practical if they are programmed up to 5 seconds ahead of the main ring pulse. Maybe ramping BM109's should be tried at a few locations to gain some experience. 4 figs.

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Pages: 12

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  • Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted

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  • Other: DE88006938
  • Report No.: FNAL-TM-1509
  • Grant Number: AC02-76CH03000
  • DOI: 10.2172/5214278 | External Link
  • Office of Scientific & Technical Information Report Number: 5214278
  • Archival Resource Key: ark:/67531/metadc1060009

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Office of Scientific & Technical Information Technical Reports

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Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 15, 1988

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 1, 2018, 8:32 p.m.

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Visser, A.T. Ramping of solid iron analysis magnets in experimental areas: BM109 preliminary results, report, January 15, 1988; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc1060009/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.