公开(公告)号：US20140028220A1

公开(公告)日：2014-01-30

申请号：US13949459

申请日：2013-07-24

Applicant: Massachusetts Institute Of Technology

Inventor： Leslie Bromberg ,  Joseph V. Minervini ,  Peisi Le ,  Alexey L. Radovinsky ,  Phillip C. Michael ,  Timothy A. Antaya

IPC: H05H13/02

CPC classification number: H05H13/02 ,  H05H7/02 ,  H05H7/10 ,  H05H13/005 ,  H05H2007/025

Abstract: The invention specifies the use of feedback in the radio frequency (RF) drive for a synchrocyclotron, controlling the phase and/or amplitude of the accelerating field as a means to assure optimal acceleration of the beam, to increase the average beam current and to alter the beam orbit in order to allow appropriate extraction as the beam energy is varied. The effect of space charge is reduced by rapid acceleration and extraction of the beam, and the repetition rate of the pulses can be increased. Several means are presented to monitor the phase of the beam in synchrocyclotrons and to adjust the phase and amplitude of the RF to optimize the acceleration of the beam and to adjust the extraction and injection of the beam. Also, the use of a pulsed ion source that matches the acceptance window of the synchrocyclotron is described.

Abstract translation: 本发明规定了用于同步回旋加速器的射频（RF）驱动中的反馈的使用，控制加速场的相位和/或振幅作为确保波束的最佳加速度的手段，以增加平均波束电流并改变 光束轨道，以便在波束能量变化时允许适当的提取。 通过快速加速和提取光束来减少空间电荷的影响，并且可以增加脉冲的重复率。 提出了几种手段来监视同步回旋加速器中的波束的相位，并且调整RF的相位和幅度以优化波束的加速度并调整波束的提取和注入。 此外，描述了使用与同步回旋加速器的接受窗口匹配的脉冲离子源。

公开(公告)号：US20200077507A1

公开(公告)日：2020-03-05

申请号：US16500303

申请日：2018-04-20

Applicant: Massachusetts Institute of Technology

Inventor： Alexey L. Radovinsky

IPC: H05H13/10 ,  H05H13/04 ,  H05H15/00 ,  H01F6/06

Abstract: Charged particles are accelerated in a direct-current synchrotron, wherein a plurality of achromatic magnets define an acceleration device. A beam of charged particles is directed toward one of the magnets, and the charged-particle beam penetrates a gap in the magnet and is repeatedly redirected through an arc of at least 270° via inverse reflection at each of the achromatic magnets to produce a series of beam lines that form a circuit in which the charge-particle beam is accelerated over successive passes through the circuit. The achromatic magnets generate a constant magnetic field. The charged particles can then be extracted from the acceleration device.

公开(公告)号：US09603235B2

公开(公告)日：2017-03-21

申请号：US13949459

申请日：2013-07-24

Applicant: Massachusetts Institute of Technology

Inventor： Leslie Bromberg ,  Joseph V. Minervini ,  Alexey L. Radovinsky ,  Philip C. Michael

IPC: H05H13/02 ,  H05H7/10 ,  H05H7/02 ,  H05H13/00

CPC classification number: H05H13/02 ,  H05H7/02 ,  H05H7/10 ,  H05H13/005 ,  H05H2007/025

Abstract: The invention specifies the use of feedback in the radio frequency (RF) drive for a synchrocyclotron, controlling the phase and/or amplitude of the accelerating field as a means to assure optimal acceleration of the beam, to increase the average beam current and to alter the beam orbit in order to allow appropriate extraction as the beam energy is varied. The effect of space charge is reduced by rapid acceleration and extraction of the beam, and the repetition rate of the pulses can be increased. Several means are presented to monitor the phase of the beam in synchrocyclotrons and to adjust the phase and amplitude of the RF to optimize the acceleration of the beam and to adjust the extraction and injection of the beam. Also, the use of a pulsed ion source that matches the acceptance window of the synchrocyclotron is described.

公开(公告)号：US20160270204A1

公开(公告)日：2016-09-15

申请号：US15161377

申请日：2016-05-23

Applicant: Massachusetts Institute Of Technology

Inventor： Leslie Bromberg ,  Joseph V. Minervini ,  Alexey L. Radovinsky ,  Phillip C. Michael

IPC: H05H13/02 ,  H05H7/10 ,  H05H7/02

CPC classification number: H05H13/02 ,  H05H7/02 ,  H05H7/10 ,  H05H13/005 ,  H05H2007/025

Abstract: The invention specifies the use of feedback in the radio frequency (RF) drive for a synchrocyclotron, controlling the phase and/or amplitude of the accelerating field as a means to assure optimal acceleration of the beam, to increase the average beam current and to alter the beam orbit in order to allow appropriate extraction as the beam energy is varied. The effect of space charge is reduced by rapid acceleration and extraction of the beam, and the repetition rate of the pulses can be increased. Several means are presented to monitor the phase of the beam in synchrocyclotrons and to adjust the phase and amplitude of the RF to optimize the acceleration of the beam and to adjust the extraction and injection of the beam. Also, the use of a pulsed ion source that matches the acceptance window of the synchrocyclotron is described.

Abstract translation: 本发明规定了用于同步回旋加速器的射频（RF）驱动中的反馈的使用，控制加速场的相位和/或振幅作为确保波束的最佳加速度的手段，以增加平均波束电流并改变 光束轨道，以便在波束能量变化时允许适当的提取。 通过快速加速和提取光束来减少空间电荷的影响，并且可以增加脉冲的重复率。 提出了几种手段来监视同步回旋加速器中的波束的相位，并且调整RF的相位和幅度以优化波束的加速度并调整波束的提取和注入。 此外，描述了使用与同步回旋加速器的接受窗口匹配的脉冲离子源。

公开(公告)号：US09615441B2

公开(公告)日：2017-04-04

申请号：US15161377

申请日：2016-05-23

Applicant: Massachusetts Institute of Technology

Inventor： Leslie Bromberg ,  Joseph V. Minervini ,  Alexey L. Radovinsky ,  Phillip C. Michael

IPC: H05H13/02 ,  H05H7/10 ,  H05H7/02 ,  H05H13/00

CPC classification number: H05H13/02 ,  H05H7/02 ,  H05H7/10 ,  H05H13/005 ,  H05H2007/025

Abstract: The invention specifies the use of feedback in the radio frequency (RF) drive for a synchrocyclotron, controlling the phase and/or amplitude of the accelerating field as a means to assure optimal acceleration of the beam, to increase the average beam current and to alter the beam orbit in order to allow appropriate extraction as the beam energy is varied. The effect of space charge is reduced by rapid acceleration and extraction of the beam, and the repetition rate of the pulses can be increased. Several means are presented to monitor the phase of the beam in synchrocyclotrons and to adjust the phase and amplitude of the RF to optimize the acceleration of the beam and to adjust the extraction and injection of the beam. Also, the use of a pulsed ion source that matches the acceptance window of the synchrocyclotron is described.