skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The Pipe-Quadrupole, an Alternative for High Gradient Interaction Region Quadrupole Designs

Abstract

In the design of interaction region (IR) quadrupoles for high luminosity colliders such as the LHC or a possible upgrade of the Tevatron, the radiation heating of the coil windings is an important issue. Two obvious solutions to this problem can be chosen. The first is to reduce the heat load by added shielding, increased cooling with fins or using Nb{sub 3}Sn to increase the temperature margin. The second solution eliminates the conductor from the areas with the highest radiation intensity, which are located on the symmetry-axes of the midplanes of the coils. A novel quadrupole design is presented, in which the conductor is wound on four half-moon shaped supports, forming elongated toroid sections. The assembly of the four shapes yields a quadrupole field with an active flux return path, and a void in the high radiation area. This void can be occupied by a liquid helium cooling pipe to lower the temperature of the windings from the inside. The coil layout, harmonic optimization and mechanical design are shown, together with the calculated temperature rise for the radiation load of the LHC interaction region quadrupoles.

Authors:
;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Accelerator& Fusion Research Division
OSTI Identifier:
1004210
Report Number(s):
LBL-38331
TRN: US201103%%466
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Conference
Resource Relation:
Conference: Applied Superconductivity Conference, Pittsburgh, PA, August 25-30, 1996
Country of Publication:
United States
Language:
English
Subject:
99; DESIGN; FERMILAB TEVATRON; HARMONICS; HELIUM; LUMINOSITY; OPTIMIZATION; QUADRUPOLES; RADIATION HEATING; RADIATIONS; SHIELDING; SUPERCONDUCTIVITY; WOUNDS

Citation Formats

Oort, J.M. van, and Scanlan, R M. The Pipe-Quadrupole, an Alternative for High Gradient Interaction Region Quadrupole Designs. United States: N. p., 1996. Web.
Oort, J.M. van, & Scanlan, R M. The Pipe-Quadrupole, an Alternative for High Gradient Interaction Region Quadrupole Designs. United States.
Oort, J.M. van, and Scanlan, R M. 1996. "The Pipe-Quadrupole, an Alternative for High Gradient Interaction Region Quadrupole Designs". United States. https://www.osti.gov/servlets/purl/1004210.
@article{osti_1004210,
title = {The Pipe-Quadrupole, an Alternative for High Gradient Interaction Region Quadrupole Designs},
author = {Oort, J.M. van and Scanlan, R M},
abstractNote = {In the design of interaction region (IR) quadrupoles for high luminosity colliders such as the LHC or a possible upgrade of the Tevatron, the radiation heating of the coil windings is an important issue. Two obvious solutions to this problem can be chosen. The first is to reduce the heat load by added shielding, increased cooling with fins or using Nb{sub 3}Sn to increase the temperature margin. The second solution eliminates the conductor from the areas with the highest radiation intensity, which are located on the symmetry-axes of the midplanes of the coils. A novel quadrupole design is presented, in which the conductor is wound on four half-moon shaped supports, forming elongated toroid sections. The assembly of the four shapes yields a quadrupole field with an active flux return path, and a void in the high radiation area. This void can be occupied by a liquid helium cooling pipe to lower the temperature of the windings from the inside. The coil layout, harmonic optimization and mechanical design are shown, together with the calculated temperature rise for the radiation load of the LHC interaction region quadrupoles.},
doi = {},
url = {https://www.osti.gov/biblio/1004210}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 12 00:00:00 EST 1996},
month = {Thu Dec 12 00:00:00 EST 1996}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: