A new series-connected hybrid magnet system for the National High Magnetic Field Laboratory

The National High Magnetic Field Laboratory (NHMFL) proposes to build a new hybrid magnet system with three specific goals: 1) address the needs of users requiring high homogeneity, high temporal stability, and long residence times at moderately high fields; 2) enhance user service through use of a...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2004-06, Vol.14 (2), p.1283-1286
Main Authors: Miller, J.R., Bird, M.D.
Format: Article
Language:English
Subjects:
Applied sciences
Costs
Design engineering
Direct current
Electric connection. Cables. Wiring
Electrical engineering. Electrical power engineering
Electrical power engineering
Electromagnets
Exact sciences and technology
High temperature superconductors
Homogeneity
Hybrid power systems
Laboratories
Magnetic fields
Materials handling
Power electronics, power supplies
Power networks and lines
Power supplies
Power system faults
Power system stability
Probes
Stability
Superconducting magnets
Superconductivity
Temporal logic
Various equipment and components
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The National High Magnetic Field Laboratory (NHMFL) proposes to build a new hybrid magnet system with three specific goals: 1) address the needs of users requiring high homogeneity, high temporal stability, and long residence times at moderately high fields; 2) enhance user service through use of a single 10 MW power supply (allowing simultaneous operation of multiple systems); and 3) make the system attractive in terms of combined capital and operating costs. The basic configuration are series-connected hybrid, wherein resistive insert and superconducting outsert are connected in series and powered by a single 10-MW unit (20 kA and 500 V) of the NHMFL dc power system, a configuration with advantages for handling faults and off-normal operating conditions and with improved temporal stability. Specific design goals are 35 T, 10-ppm uniformity over a 10-mm DSV, and access for 40-mm diameter probes. By powering the superconducting outsert with 20-kA high-temperature-superconductor (HTS) current leads, cryogenic loads are kept small, substantially smaller even than the present 45-T Hybrid. The net result is a magnet design: 1) with capability for both higher field and higher field quality than present resistive-only systems, 2) that permits simultaneous service of two or more users, 3) that is sufficiently compact to fit within the standard resistive-magnet cell, 4) whose ease of operation is comparable to resistive-only systems, and 5) whose lifetime cost (including construction and operation) can be significantly lower than comparable resistive-only systems. We discuss details of the existing conceptual design, the methodology for its creation, the perceived development needs, and the projected program to realize this system.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2004.830554