Rotatable superconducting cyclotron adapted for medical use
- East Lansing, MI
- Williamston, MI
- Berkeley, CA
A superconducting cyclotron (10) rotatable on a support structure (11) in an arc of about 180.degree. around a pivot axis (A--A) and particularly adapted for medical use is described. The rotatable support structure (13, 15) is balanced by being counterweighted (14) so as to allow rotation of the cyclotron and a beam (12), such as a subparticle (neutron) or atomic particle beam, from the cyclotron in the arc around a patient. Flexible hose (25) is moveably attached to the support structure for providing a liquified gas which is supercooled to near 0.degree. K. to an inlet means (122) to a chamber (105) around superconducting coils (101, 102). The liquid (34) level in the cyclotron is maintained approximately half full so that rotation of the support structure and cyclotron through the 180.degree. can be accomplished without spilling the liquid from the cyclotron. With the coils vertically oriented, each turn of the winding is approximately half immersed in liquid (34) and half exposed to cold gas and adequate cooling to maintain superconducting temperatures in the section of coil above the liquid level is provided by the combination of cold gas/vapor and by the conductive flow of heat along each turn of the winding from the half above the liquid to the half below.
- Research Organization:
- Michigan State Univ., East Lansing, MI (United States)
- DOE Contract Number:
- AC02-80ER10579
- Assignee:
- Board of Trustees operating Michigan State University (East Lansing, MI)
- Patent Number(s):
- US 4507616
- OSTI ID:
- 865388
- Country of Publication:
- United States
- Language:
- English
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superconducting
cyclotron
adapted
medical
10
support
structure
11
180
degree
pivot
axis
a-a
particularly
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15
balanced
counterweighted
14
allow
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beam
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subparticle
neutron
atomic
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providing
liquified
gas
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maintained
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vapor
conductive
flow
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superconducting coil
particularly adapted
vertically oriented
particle beam
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support structure
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