A5049162508- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Gyrotron and Vacuum Electronics Research
- Magnetic confinement fusion research
- Aluminum Alloys Composites Properties
- Metal Alloys Wear and Properties
- Advanced Welding Techniques Analysis
- Electromagnetic Launch and Propulsion Technology
Chinese Academy of Sciences
2014-2024
University of Chinese Academy of Sciences
2014-2024
Institute of Modern Physics
2014-2024
Ji Hua Laboratory
2023
Abstract The design, construction, and commissioning of a novel liquid helium-free (LHe-free) Nb 3 Sn superconducting radio frequency (SRF) electron accelerator at the Institute Modern Physics Chinese Academy Sciences (IMP, CAS) will be presented. A 650 MHz 5-cell elliptical cavity was coated using tin vapor diffusion method for beam acceleration. slowly cooled down across 18 K with high-precision collaborative control ten individual GM cryocoolers. This process accompanied by characteristic...
A superconducting ion-Linac (iLinac), which is supposed to work as the injector in High Intensity heavy-ion Accelerator Facility project, under development at Institute of Modern Physics (IMP), Chinese Academy Sciences. The iLinac a heavy ion linear accelerator approximately 100 meters long and contains 96 cavities two types 17 cyromodules. Two resonators (quarter-wave with frequency 81.25 MHz an optimal beta β = v/c 0.07 called QWR007 half-wave 162.5 0.15 HWR015) have been investigated....
As a part of R&D work for the high intensity proton linac China Accelerator Driven Sub-critical System project, superconducting half-wave cavity with frequency 162.5 MHz and an optimal beta 0.15 (HWR015) has been developed at Institute Modern Physics (IMP), Chinese Academy Sciences. In this paper, design test results will be described in detail. We introduced new stiffening strategy HWR cavity, simulation show that much lower sensitivity coefficient (df/dp), Lorentz force detuning (KL), can...
A 162.5 MHz superconducting half-wave resonator (HWR) with geometry beta of 0.09 is being developed for Injector II China Accelerator Driven Sub-critical System (CADS) Project at the Institute Modern Physics (IMP).The HWR section composed 16 cavities will accelerate proton beam from 2.1 MeV to 10 MeV.The RF and mechanical coupled analysis are essential in design order predict deformation cavity walls frequency shift caused by deformation.In this paper, detuning both bath helium pressure...
Superconducting Radio Frequency technologies are widely employed in particle accelerators to explore the frontiers of science. Pure niobium cavity with 2.8–4[Formula: see text]mm thickness is traditional technology a compromise between thermal conduction and mechanic stability. To meet requirements higher stability such as ADS linac, high intensity pulse solution for enhancing superconducting cavities by Al–Nb double layer structure proposed while maintaining enough heat transfer capacity....
Superconducting multi-spoke cavities are outstanding alternative choice for acceleration of heavy ions in medium velocity regimes. Based on the scheme China ADS, several researches superconducting double-spoke were done and two prototype have been developed. In this paper, RF design, mechanical design fabrication considerations bare cavity will be described detail. After Buffered Chemical Polishing High Pressure Rinsing, one was installed into Vertical Test Stand high gradient testing at 4.2...
InvestIgatIon of the MIcrostructure and MechanIcal ProPertIes
A 325 MHz aluminum prototype of a spatially periodic rf quadrupole focusing linac was developed at the Institute Modern Physics, Chinese Academy Sciences, as promising candidate for front end high-current linac. It consists an alternating series crossbar H-type drift tubes and sections. Owing to its special geometry, cavity fabrication is major hurdle engineering development application. In this paper, we report detailed mechanical design structure describe process, including machining,...