摘要:
An electromagnetic field control member includes an insulating member constituted of a cylindrical ceramic and having a plurality of through holes along an axial direction, a conductive member constituted of metal and closing the through holes so as to provide an opening that opens in an outer periphery of the insulating member, and a power supply terminal connected to the conductive member. The power supply terminal is located away from an inner wall of the insulating substrate forming the through holes, and has a first end and a second end in the axial direction, and at least one of the first end and the second end is located farther away from the inner wall than a central portion of the power supply terminal.
摘要:
The invention comprises a patient positioning and/or repositioning system, such as a laying, semi-vertical, or seated patient positioning, alignment, and/or control method and apparatus used in conjunction with multi-axis charged particle radiation therapy. Patient positioning constraints optionally include one or more of: a seat support, a back support, a head support, an arm support, a knee support, and a foot support. One or more of the positioning constraints are preferably movable and/or under computer control for rapid positioning, repositioning, and/or immobilization of the patient. The system optionally uses an X-ray beam that lies in substantially the same path as a proton beam path of a particle beam cancer therapy system. The generated image is usable for: fine tuning body alignment relative to the proton beam path, to control the charged particle beam path to accurately and precisely target the tumor, and/or in system verification and validation.
摘要:
A circular accelerator that accelerates charged particles orbiting along an orbital path to a predetermined energy to perform, by deviating the path from the orbital path to an extraction path, extraction of the charged particles exceeding a stable region formed by multipole electromagnets (41, 42), includes a multipole electromagnet energization control unit (9) setting energization of the multipole electromagnets (41, 42) so that part of the charged particles are deviated to a discarding path other than the extraction path to discard unwanted charged particles, and then setting energization of the multipole electromagnets (41, 42) so that the charged particles orbiting in the orbital path are deviated to the extraction path to perform extraction of the charged particles.
摘要:
A device controller controls an acceleration-related devices and an extraction-related devices of an accelerator for accelerating and extracting a particle beam, in such a way that the controller checks, at a time point when receiving a master clock pulse, that preparation for operating the acceleration-related devices is completed and then commands the acceleration-related devices to operate in accordance with an operation pattern corresponding to a prescribed energy of the particle beam, and commands the acceleration-related devices to operate in accordance with an extracting operation pattern when an extraction enable signal indicating that the particle beam reaches the prescribed energy is turned ON and an extraction-related device setting-status signal indicating that completion of setting the extraction-related devices for the prescribed energy is ON.
摘要:
Plural pairs of connection plates (21) are placed circumferentially around a plurality of circularly-arranged electromagnets (2, 3, 4), in which the plural pairs are each a pair of two connection plates placed with a gap therebetween in a radial direction and are arranged in a longitudinal direction of the connection plates. Further, at a portion where one (21a) of the two connection plates forming a pair (21a, 21c) and one (21b) of the adjacent two connection plates forming another pair are connected to each other, an end portion (22a) of the one of the two connection plates forming the pair and an end portion (22b) of the one of the two connection plates forming the another pair, are configured to be bent in the radial direction so that these end portions (22a, 22b) are both apart from the other one (21a, 21b) of the two connection plates forming the pair, whereby the connection plates in the pair and the connection plates in the another pair are serially connected. Further, using an intermediate fixation plate (24) and a clamping plate (25), all of the connection plates (21) are placed at a position higher than an installation base level.
摘要:
The present invention is purported to provide an electromagnet support frame for supporting a large-size electromagnet, which is highly flexible in arrangement of the large-size electromagnet and can be made compact as an entire apparatus. The electromagnet support frame is for supporting an electromagnet (30) having a trunnion pair (33) which comprises two trunnions (32) that are formed on mutually opposite side-faces of the electromagnet and whose central axes (34) are matched to each other, and is characterized by including support fixtures (10) whose number is the same as that of the trunnions (32) and in which engaging parts (19) are formed that are engaged with the trunnions (32) so as to cover outer faces thereof, and a mounting frame (26) that holds the support fixtures (10) through vertical adjustment parts (21) that move the fixtures in a vertical direction.