Superconducting synchrocyclotron
First Claim
1. In a synchrocyclotron apparatus including source means on the central axis (a--a) inside an acceleration chamber for providing atomic or subatomic charged particles to be spirally accelerated in the cyclotron, with electrical coils around two spaced apart iron magnetic poles, RF generator means connected to an RF accelerating electrodes for accelerating the charged particles synchronously in the acceleration chamber to generate a pulsed beam of the atomic or subatomic particles from the spirally accelerated charged particles, the improvement which comprises:
- (a) a pair of superconducting coils mounted on the poles inside a vessel for containing a liquified gas at about 0°
K. to cool the coils;
(b) electrical supply means for providing a large electrical current through the coils to create a high magnetic field between the poles;
(c) liquid supply means for providing liquified gas to the coils and vessels; and
(d) support means for holding the coils in position around the poles which thermally insulate the coils from the magnetic poles.
2 Assignments
0 Petitions
Accused Products
Abstract
A synchrocyclotron with superconducting coils (1) is described. The coils are provided in a vessel (4) which is supported by low heat leak members (6) in a cryostat (7). A liquified gas (helium) is provided in the vessel to cool the coils so as to render them superconducting.
97 Citations
11 Claims
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1. In a synchrocyclotron apparatus including source means on the central axis (a--a) inside an acceleration chamber for providing atomic or subatomic charged particles to be spirally accelerated in the cyclotron, with electrical coils around two spaced apart iron magnetic poles, RF generator means connected to an RF accelerating electrodes for accelerating the charged particles synchronously in the acceleration chamber to generate a pulsed beam of the atomic or subatomic particles from the spirally accelerated charged particles, the improvement which comprises:
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(a) a pair of superconducting coils mounted on the poles inside a vessel for containing a liquified gas at about 0°
K. to cool the coils;(b) electrical supply means for providing a large electrical current through the coils to create a high magnetic field between the poles; (c) liquid supply means for providing liquified gas to the coils and vessels; and (d) support means for holding the coils in position around the poles which thermally insulate the coils from the magnetic poles. - View Dependent Claims (7, 8, 9, 10, 11)
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2. In a synchrocyclotron apparatus including source means on the central axis (a--a) inside an acceleration chamber for providing atomic or subatomic charged particles to be spirally accelerated in the cyclotron, with electrical coils around two spaced apart iron magnetic poles, RF generator means connected to an RF accelerating electrodes for accelerating the charged particle synchronously in the acceleration chamber to generate a pulsed beam of the atomic or subatmoic particles from the spirally accelerated charged particles, the improvement which comprises:
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(a) an RF electrode adjacent the charged particle source means mounted inside the acceleration chamber and leading from outside the synchrocyclotron with a pair of spaced apart plates at an end of the electrode and located in one half of the chamber around the ion source, the plates having spaced apart parallel surfaces between which the charged particles are synchronously accelerated by the RF and each surface having opposed sides; (b) dummy electrodes adjacent to each of the spaced apart plates and the ion source for providing an electrical field between the spaced apart plates and the dummy electrodes; (c) adjustable tuning means coupled to the electrode and mounted on the outside of the synchrocyclotron for varying the frequency of the RF in the electrode so as to synchronously accelerate the charged particle between the plates; (d) a pair of superconducting coils mounted on the poles inside a vessel for containing a liquified gas at about 0°
K to cool the coils;(e) electrical supply means for providing a large electrical current through the coils to create a high magnetic field between the poles; (f) liquid supply means for providing liquified gas to the coils and vessels; and (g) support means for holding the coils in position around the poles which thermally insulate the coils from the magnetic poles. - View Dependent Claims (3, 4, 5, 6)
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Specification