LDX September 2000
Floating Coil

The magnetic center and magnetic axes of the coil were determined by a sensitive Hall probe.

The final joint of the LDX floating coil was soldered using an Indium solder. Following insulation, the last turns, the joint, fiberglass spacers and supports were impregnated with epoxy and glass tape. A strong fiberglass and Nomex string bandage was installed around the central part of the coil including the joint.
LDX Floating coil.

The completed coil has been shipped to Ability Engineering for enclosure within the floating coil cryostat.

Floating Coil Helium Vessel and Cryostat

Ability Engineering Technology has completed the manufacturing design of the floating coil cryostat and assembly apparatus. The design was reviewed at MIT and changes were requested. Those changes were implemented by Ability and new drawings have been sent to MIT for final review.

The helium pressure vessel is undergoing machining to reduce the weight of this critical component. A review of the pressure vessel code requirements was made by Ability and a new wall thickness profile was developed that is consistent with the requirements. Machining has recommenced to obtain cryostat wall thickness profile recommended by MIT.

Charging Coil

MIT received from the Efremov Institute the final version of "C-coil Preliminary Design" documentation in two Volumes (126 and 95 pages). The LDX team reviewed the documentation and sent to the Efremov Institute notes and questions. On August 30 the LDX team had a (three hour) conference call with the Efremov Institute team during which time the Preliminary Design was discussed and future design development was agreed upon. The preliminary C-coil design was accepted by MIT.


Procurement of the launcher/catcher components has begun. Quotations have been requested from vendors. The most promising response is from The Standard Bellows Co. Standard Bellows are able to to weld the sections for each bellows and also to weld on the end pieces, including the custom flange.

Levitation Coil

An invited paper on the Levitation Coil was written for the Applied Superconductivity Conference. Several new solid models were prepared, an improved correlation for BSSCO-2223 properties was derived, and an assembly procedure with clearances between the L-Coil cryostat and the lifting fixture was developed. A three-way meeting has been arranged at the Applied Superconductivity Conference between MIT, the American Superconductor Corporation, and Everson Electric to finalize the terms of HTSC tape transfer between American Superconductor Corporation and MIT.