A5029605411- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Particle Detector Development and Performance
- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Radiation Effects in Electronics
- Radiation Therapy and Dosimetry
- Nuclear and radioactivity studies
- High-Energy Particle Collisions Research
- Electromagnetic Compatibility and Measurements
- Particle physics theoretical and experimental studies
- Advancements in PLL and VCO Technologies
- Computational Physics and Python Applications
- Nuclear Physics and Applications
- Plasma Diagnostics and Applications
- Advanced Electrical Measurement Techniques
- Electromagnetic Simulation and Numerical Methods
- Nuclear physics research studies
- Nuclear reactor physics and engineering
- Atomic and Subatomic Physics Research
- Photocathodes and Microchannel Plates
- Atomic and Molecular Physics
Chinese Academy of Sciences
2015-2024
Institute of Modern Physics
2015-2024
University of Chinese Academy of Sciences
2020-2024
University of Science and Technology of China
2015-2016
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...
Beam Position Monitors (BPMs) for the low-beta beam of Chinese Accelerator Driven Subcritical system (CADS) Proton linac are capacitive pick-up type. They provide higher output signals than that inductive This paper will describe design and tests BPM proton linac, including pick-ups, test bench read-out electronics. The done with an actual show a good agreement between measurements simulations in time domain.
The new wide-range readout electronics with a self-calibration function are designed for ionization chambers (ICs) in the slow extraction of high-intensity heavy-ion accelerator facility (HIAF), booster ring (BRing). These consist programmable trans-impedance amplifier (TIA), circuit, an 18-bit analog-to-digital converter (ADC), and ZYNQ-7015 field-programmable gate array (FPGA). It is capable monitoring weak current signals 40 pA–4 mA sampling rate 5 MHz. FPGA manages operation mode analog...
The Chinese Accelerator Front end (CAFe) is a demo superconducting proton linac for an accelerator-driven subcritical system (ADS). It includes electron-cyclotron resonance ion source, low-energy transport line, radio-frequency quadrupole, medium-energy section, high-energy and beam dump. design energy current are 20 MeV 10 mA, with power of 200 kW. goal the CAFe to demonstrate 10-mA ability full linac, especially in region. In previous commissioning, maximum achieved was 34 kW, which...
Non-destructive measurements of low-intensity charged particle beams are particularly challenging for beam diagnostics. At the Heavy Ion Accelerator Facility in Lanzhou (HIRFL), with weak currents below 1 µA often provided experiments. The detection such low current is threshold typical standard transformers. Therefore, a monitoring system developed by using sensitive capacitive pick-up (PU) and low-noise electronics. This device measures digitally analyzing amplitude PU signals homodyne...
The High Intensity Heavy-ion Accelerator Facility (HIAF), currently under construction, is a complex machine that couples Continuous Wave (CW) superconducting ion Linear accelerator (iLinac) with high-energy synchrotron to produce various stable and radioactive intense beams energies from MeV/u GeV/u. has versatile operation mode which requires high flexibility reliability the Machine Protection System (MPS). A customized robust MPS designed developed give readiness of for operation,...
Stochastic cooling of the spectrometer ring (SRing) at High Intensity Heavy-Ion Accelerator Facility (HIAF) project in China, which is used mainly for experiments with radioactive fragment beams, applied to speed up process a stored ion beam. In this study, both Faltin traveling wave structure and novel slot-ring standing based on ceramic vacuum chamber are discussed evaluated pickup/kicker SRing stochastic system. The should significantly improve shunt impedance due Cherenkov effect. For...
A new 128-channel readout system is designed for a multistrip ionization chamber (MSIC) of the Proton radiation effects facility (PREF) end station. This consists 128 ultralow noise analog front-ends (AFEs), 16 eight-channel 60 Msps simultaneous sampling analog-to-digital converters (ADCs), 8 Kintex-7 field-programmable gate arrays (FPGA), and Zynq FPGA. It capable monitoring weak current signals 25 pA– <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...
To meet the high time-resolution requirements of a fast ionization profile monitor (IPM), 64-channel electrical signal acquisition system with response frequency 1 MHz has been developed. This article initially describes an ultralow noise transimpedance amplifier, which is analog front-end (AFE) electronics aiming to achieve balance between accuracy and bandwidth, as well truly reflect microstructure short beam pulses. Subsequently, synchronized multichannel data transmission based on...
The development, performance, and testing of the longitudinal bunch shape monitor, namely, Fast Faraday Cup (FFC), are presented in this paper. FFC is an invasive instrument controlled by a stepper motor, its principle operation based on strip line structure. was determined sampling small part beam hitting through 1-mm hole. rise time detector reached 24 ps. To accommodate experiments that utilize high-intensity beams, materials monitor were chosen to sustain high temperatures. Water cooling...
A diagonal-cut type beam position monitor (BPM) has been developed for the High Intensity Heavy-Ion Accelerator Facility (HIAF) project at Institute of Modern Physics. Compared with other types BPMs, BPM almost perfect linearity, i.e., no non-linear correction required, which is advantageous beams that are transversally large and have a complex charge distribution. The key parameters simulated optimized in detail systematically herein. It was found crosstalk improved by ∼10 dB 160 MHz...
An accelerator-driven subcritical system (ADS) project was launched in China 2011, aiming to design and build an ADS demonstration facility with the capability of more than 1000 MW thermal power. The driver linac is defined be a 10 mA current high energy protons at 1.5 GeV continuous wave operation mode. To meet extremely power intense beam accelerator requirements, non-interceptive monitors for transverse profile are required this proton linac. Taking advantage residual gas as active...
Abstract The new injector SSC-LINAC is under design and construction to improve the efficiency intensity of beams for Separated-Sector Cyclotron (SSC). This will be accomplished with a normal conducting radio-frequency quadrupole (RFQ) accelerator. To match SSC, RFQ must operated on Continuous Wave (CW) mode frequency 53.667 MHz. A four-rod structure was adopted small dimensions cavity. While, it huge challenge CW mode. multi-physics theoretical analysis, including RF, thermal, structural...