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Publication Information
Title Liquid nitrogen tests of a Torus coil for the Jefferson Lab 12GeV accelerator upgrade
Abstract A magnet system consisting of six superconducting trapezoidal racetrack-type coils is being built for the Jefferson Lab 12GeV accelerator upgrade project. The magnet coils are wound with Superconducting Super Collider-36 NbTi strand Rutherford cable soldered into a copper channel. Each superconducting toroidal coil is force cooled by liquid helium which circulates in a tube which is in good thermal contact with the inside of the coil. Thin copper sheets are soldered to the helium cooling tube and wrap round the superconducting coil thus providing cooling to the rest of the coil pack. The coil is located within an aluminum coil case. As part of a rigorous risk mitigation exercise, a cool down test to liquid nitrogen temperature is performed on each of the six coils to validate predicted thermal stresses, verify the robustness and integrity of electrical insulation and evaluate the efficacy of the employed conduction cooling method. This paper describes the test set up, the tests perform
Author(s) Bob Legg, David Kashy, Ruben Fair, Probir Ghoshal, Ramakrishna Bachimanchi, Krister Bruhwel, Mark Taylor, John Fischer, Danny Machie, Jacob Powers
Publication Date June 2015
Document Type Meeting, Journal Article
Primary Institution Thomas Jefferson National Accelerator Facility, Newport News
Affiliation Exp Nuclear Physics / Experimental Halls / Hall B
Funding Source
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-PHY-14-1911 OSTI Number: 1182269
LANL Number: Other Number: DOE/OR/23177-3125
Associated with an experiment No
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Meeting / Conference
Meeting Name ASC 2014 (Applied Superconductivity Conference)
Meeting Date 8/10/2014
Document Subtype Paper (proceedings only)
Journal Article
Journal Name IEEE Transactions in Applied Superconductivity
Refereed Yes
Volume 25
Issue 3
Page(s) 4500104
Attachments/Datasets/DOI Link
Document(s)
JLAB-PHY-14-1911.pdf (STI Document)
DOI Link
Dataset(s) (none)
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