Cryogen-free Light-weight Superconducting Beam Bending Magnets for Proton Therapy

用于质子治疗的无制冷剂轻型超导光束弯曲磁体

• 批准号: 9333468
• 负责人: Shahin Pourrahimi
• 金额: $ 50.67万
• 依托单位: SUPERCONDUCTING SYSTEMS, INC
• 依托单位国家: 美国
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-22 至 2019-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/9333468
• 关键词: Carbon; Characteristics; Computer software; Consumption; Cyclotrons; Dose; Economics; Goals; Health; Helium; Institutes; Iron; Liquid substance; Magnetic Resonance Imaging; Magnetism; Maintenance; Massachusetts; Measures; Modality; Modeling; Optics; Patients; Penetration; Phase; Physics; Plasma; Protons; Radiation; Radiation therapy; Ramp; Reporting; Rotation; Scanning; Science; Shapes; Synchrotrons; System; Technology; Temperature; Testing; Tissues; Weight; Work; cancer therapy; cancer type; commercialization; cost; density; design; dipole moment; flexibility; hadron; innovation; irradiation; light weight; magnetic dipole; magnetic field; operation; particle beam; proton beam; proton therapy; rate of change; success; superconductivity; tumor

 DESCRIPTION (provided by applicant): The overall goal of this Fast Track project is to combine innovations in superconducting magnet design and new magnet topologies to create a lightweight toroidal beam bending magnet for rotating gantries used in proton beam therapy. The magnet is robust for pencil-beam scanning therapy, as the magnet is dry (no liquid helium coolant) and can withstand AC losses from rapidly varying magnetic fields (needed for varying the energy of beam to adjust penetration of the beam into the tumor). This toroidal bending magnet will use a unique, cryogen-free self- shielded superconducting magnet that makes the scanner attractive for pencil beam scanning using a proton beam. The proposed bending magnet uses an innovative magnet topology that is constant field along the beam and self-shields the magnetic field, eliminating the need and weight of the iron. The combination of proven technologies in design and manufacturing of high-field (1.5T and higher) cryogen- free MRI magnets and the innovative constant-field toroidal field beam bending magnet results in a significant breakthrough gantry design.