Superstrong Adjustable Permanent Magnet for a Linear Collider Final Focus

Technical Report · Mon Dec 06 00:00:00 EST 2004

DOI:https://doi.org/10.2172/839806· OSTI ID:839806

Mihara, T

A superstrong permanent magnet quadrupole (PMQ) is one of the candidates for the final focus lens for the linear collider because of its compactness and low power consumption. The first fabricated prototype of our PMQ achieved a 300T/m superstrong field gradient with a 100mm overall magnet radius and a 7mm bore radius, but a drawback is its fixed strength. Therefore, a second prototype of PMQ, whose strength is adjustable, was fabricated. Its strength adjustability is based on the ''double ring structure'', rotating subdivided magnet slices separately. This second prototype is being tested. Some of the early results are presented.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 839806
• Report Number(s): SLAC-PUB-10878; TRN: US0503412
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
LINEAR COLLIDERS
MAGNETS
PERMANENT MAGNETS
QUADRUPOLES