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Remotely solderable current leads

IP.com Disclosure Number: IPCOM000116261D
Publication Date: 2005-Mar-30
Document File: 2 page(s) / 55K

Publishing Venue

The IP.com Prior Art Database

Related People

Drew W. Hazelton: INVENTOR

Abstract

In a large superconducting device, such as an accelerator magnet, where the high current lead is located deep within the cryogenic and vacuum structure, this invention uses 6,000 Amp high current leads that incorporate a remotely solderable function to quickly decouple the lead from the device, without having to disassemble the spool box to gain access, reducing the task from days or weeks to merely hours.

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       Superpower, Inc. Publication of Intellectual Property

www.ip.com

Date: 1/13/05 ID#: SP-185

Publication Title: Remotely solderable current leads

Author(s)/Inventor(s): Drew W. Hazelton

SuperPower, Inc. 450 Duane Ave., Schenectady, NY 12304 Tel.: 518-346-1414 e-mail: dhazelton@igc.com

Document Abstract:

In a large superconducting device, such as an accelerator magnet, where the high current lead is located deep within the cryogenic and vacuum structure, this invention uses 6,000 Amp high current leads that incorporate a remotely solderable function to quickly decouple the lead from the device, without having to disassemble the spool box to gain access, reducing the task from days or weeks to merely hours.

The Invention:

The issue:

High current leads that are used to supply current to large, superconducting devices such as accelerator magnets for high energy physics experiments are often located deep within the associated cryogenic and vacuum structure. If maintenance and/or replacement of the lead is required, this often involves extensive operations to gain access to the lead in the spool box area to effect a desoldering operation to disconnect and remove the current lead. These operations are time consuming and can often take several days if not weeks to fully implement and involve considerable disassembly and reassembly of the surrounding spool box structure.

The solution:

In order to address this issue, 6,000 Amp high current leads have been developed for Fermilab that incorporate a remotely solderable function in order to quickly decouple the lead from the system without having to disassemble the spool box to gain access. This saves considerable time and reduces the overall operation to hours instead of days (see Figure 1).

The remotely solderable lead utilizes a heat source embedded close to the lead interconnect to locally heat up the connection to melt the solder in the receiver cup. The lead is then free to be removed from the assembly by unbolting it at its top flange. The use of a low melting point solder in the receiver cup and careful monitoring of temperatures a...