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Title: Fermilab Tevatron quadrupoles

Abstract

Details on the design, construction, and performance tests of Energy Saver/Doubler quadrupoles are presented along with recent data from the test of a special high gradient low beta prototype quadrupole.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab., Batavia, IL (USA)
OSTI Identifier:
6050965
Report Number(s):
FNAL-TM-1183
ON: TI85004254
DOE Contract Number:
AC02-76CH03000
Resource Type:
Technical Report
Resource Relation:
Other Information: Paper copy only, copy does not permit microfiche production
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; SUPERCONDUCTING MAGNETS; SPECIFICATIONS; TEVATRON; BEAM FOCUSING MAGNETS; FERMILAB ACCELERATOR; QUADRUPOLES; ACCELERATORS; CYCLIC ACCELERATORS; ELECTRICAL EQUIPMENT; ELECTROMAGNETS; EQUIPMENT; MAGNETS; MULTIPOLES; SUPERCONDUCTING DEVICES; SYNCHROTRONS; 430100* - Particle Accelerators- Design, Development, & Operation

Citation Formats

Cooper, W.E., Fisk, H.E., Gross, D.A., Lundy, R.A., Schmidt, E.E., and Turkot, F. Fermilab Tevatron quadrupoles. United States: N. p., 1983. Web. doi:10.2172/6050965.
Cooper, W.E., Fisk, H.E., Gross, D.A., Lundy, R.A., Schmidt, E.E., & Turkot, F. Fermilab Tevatron quadrupoles. United States. doi:10.2172/6050965.
Cooper, W.E., Fisk, H.E., Gross, D.A., Lundy, R.A., Schmidt, E.E., and Turkot, F. Tue . "Fermilab Tevatron quadrupoles". United States. doi:10.2172/6050965. https://www.osti.gov/servlets/purl/6050965.
@article{osti_6050965,
title = {Fermilab Tevatron quadrupoles},
author = {Cooper, W.E. and Fisk, H.E. and Gross, D.A. and Lundy, R.A. and Schmidt, E.E. and Turkot, F.},
abstractNote = {Details on the design, construction, and performance tests of Energy Saver/Doubler quadrupoles are presented along with recent data from the test of a special high gradient low beta prototype quadrupole.},
doi = {10.2172/6050965},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 01 00:00:00 EST 1983},
month = {Tue Mar 01 00:00:00 EST 1983}
}

Technical Report:

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  • It is now generally recognized that a large roll, {approx} 6--7 mr, in a triplet low-{beta} quadrupole, which couples the horizontal and vertical motion of the beam, can significantly reduce the luminosity and impact the operation of the Tevatron. The question then arises, what is the effect of the small rolls of the low-{beta} quadrupoles on the luminosity. They will consider random rolls with a {sigma} = 1,2 and 4mr which can be expected due to errors in the surveys, or changes in alignment after the survey. In the actual operation of the Tevatron they attempt to correct for themore » coupling and so this study will consider correction schemes and will compare the luminosity, after correction, with a configuration with no rolls.« less
  • With the U.S. cancellation of the SSC project, the only large approved hadron accelerator project is CERN's LHC. One of the more critical elements in the performance of a collider is the quadrupole lens at the beam collision points. These quadrupoles, usually referred to as the 'insertion quads' normally form a set of triplets around the interaction region. Their focal power directly affects the luminosity available at the crossing point In order to achieve as high a gradient as possible, the CERN design team has proposed a very efficient high gradient quadrupole which is based on a graded four-layer windingmore » structure. At Fermilab's Tevatron, an upgraded two layer winding quadrupole has been in operation since 1989, and has provided a 50% higher gradient than its predecessor. The quadrupole was basically state of the art when it was designed in 1985. Since then however, improvements have been made in cabling, conductor perfonnance, etc. Naturally, operation of a modernized version of this .design can provide higher capabilities. This improved two layer design can serve as an alternative to the more intricate graded four layer design now envisioned for the LHC, provided it can obtain the proposed gradient. A high gradient quadrupole with a 'pipe' layout can be considered as a possible candidate for future large collider insertion regions. It is possible to fine-tune the design to obtain a good field-quality, the conductor is well cooled in case of a large radiation heat load, and the overall structure is smaller than a conventional quadrupole with a comparable field gradient.« less
  • The Fermilab Energy Saver/Doubler (Tevatron) accelerator contains 216 superconducting quadrupole magnets. Before installation in the Tevatron ring, these magnets plus an additional number of spares were extensively tested at the Fermilab Magnet Test Facility (MTF). Details on the results of the tests are presented here.