45
Permanent
Magnet Quadrupoles with Adjustable Field Strength and Centerline Movement
Compensation--STI
Optronics, Inc., 2755 Northup Way, Bellvue, WA
98004-1403; 425-827-0460
Mr.
Stephen C. Gottschalk, Principal Investigator, sc@stioptronics.com
Dr.
William J. Thayer, III, Business Official, bthayer@stioptronics.com
DOE
Grant No. DE-FG03-01ER83305
Amount:
$100,000
Next
generation linear colliders (NLC) will require large quantities of ultra-stable
quadrupole focusing magnets along the beamline, with magnetic center shifts less
than 1.4 micrometers. Conventional
magnets would have difficulty obtaining this stability.
Not only are capital and operating costs high, unwanted vibrations are
caused by cooling water. This
project will modify a permanent magnet (PM) multipole beamline optic design with
remotely variable magnetic field strength and centerline adjustment to satisfy
the stringent needs for the NLC. Besides
gaining ultra-stablility, the capital and operating costs will be substantially
less than conventional electromagnets (EM) because high current power supplies
and cooling water are eliminated. Magnetic
and engineering analysis will be performed during Phase I to modify the existing
PM quadrupole design in order to achieve the 1.4 micrometer centerline
stability. A design verification test will be performed to verify the
ability to control the centerline position and achieve automatic temperature
compensation.
Commercial Applications And Other Benefits as described by the awardee: Multipole optical elements, such as quadrupoles, sextupole, and octopoles, are used in all accelerator systems, including research, medical, and industrial accelerators, and synchrotron storage rings. The adjustable multipole PM elements should have the advantage of eliminating the need for high current power supplies and cooling water with significant capital and operating cost savings. Also, the PM design is inherently compact and can be used where conventional EMs cannot fit.