Conveners
Tue-Mo-Po2.08 - Resistive Magnets for Accelerator and Fusion II
- Helene Felice (CEA Paris-Saclay)
- Michele Modena (CERN)
The radioactive dose rate in the area behind the target of the Super-Fragment Separator (Super-FRS) will be so high that most organic materials will be destroyed in a short period of time. After 20 years of operation an accumulated dose of more than 280 MGy is expected at the most critical parts. Special magnets consisting of radiation resistant materials must be used. Three dipoles, three...
The East Area (EA) is a facility for experiments, beam tests and irradiation operated at the CERN Proton Synchrotron since over 55 years. The experimental area requires high availability, which has been increasingly jeopardized due to the age and reduced reliability of the installed components, in particular magnets and power supplies.
The CERN management has then decided to completely...
The CERN PSB (Proton Synchrotron Booster) is currently under-going a major upgrade with an increase in both injection and extraction energy. With the connection of the new LINAC 4, which replaces the now decommissioned LINAC 2, the energy of the beam to be transported to the PSB is increased from 50 MeV to 160 MeV. Simultaneously, the PSB will be upgraded to provide protons to the CERN PS...
Proton beam is an effective means of radiotherapy for tumors. During the transmission of the proton beam from the accelerator to the treatment head, the direction of the beam is usually changed by the magnetic field generated by dipole magnet. A variety of magnets are arranged in a radiotherapy system using a rotating gantry for proton beam transmission. The 90 degree magnet is placed above...
Proton beams have several features that make them very effective in radiation therapy applications. These include high dose localization as well as high biological effect around the Bragg peak. Moreover, magnetic scanning methods allow one to spread an ion beam to an exact image of a complex tumor shape. The ion scanning system usually consists of two magnets, each scanning horizontal and...
Proton therapy is regarded as one of the most advanced radiotherapy methods for its unique Bragg Peak. As a medical apparatus, the proton therapy facility must deliver stable and accurate dose or proton beams to patients. Huazhong University of Science and Technology (HUST) was funded in 2016 to build such a machine, known as HUST-PTF. The HUST-PTF uses a superconducting cyclotron to produce...
Correction magnets with permanent magnets are investigated. They need to generate both polarities of magnetic fields, which can be realized by rotating permanent magnet rods. Such a magnet system will reduce not only electricity but also maintenance cost. The structure and the field adjustment scheme of a trial conceptual design will be discussed.
Strong magnetic fields are demanded for advanced accelerators. As a cost-effective option other than HTS (High Temperature Superconductors), permanent magnets may be applied in the hybrid magnets to generate the strong magnetic field. One of the most promising permanent magnetic materials for the hybrid magnets is praseodymium permanent magnets (PrFeB). Although the remanent field of...
