Mamba, a software framework to improve the use of next-generation synchrotron sources, was deployed in July at several beamlines of the Beijing Synchrotron Radiation Facility (BSRF), a first-generation synchrotron source operated by the Institute of High Energy Physics (IHEP) of the Chinese Academy of Sciences.
With support from the Major Achievements Cultivation Program of the Chinese Academy of Sciences, the Beam Instrumentation (BI) Group of the Accelerator Division of the Institute of High Energy Physics has completed a new upgrade of beam position measurement (BPM) electronics in the BEPCII storage ring, and all 98 sets of imported analog electronics have been replaced by self-developed electronics with independent intellectual
The 20th International Collaboration Meeting of the Jiangmen Underground Neutrino Observatory (JUNO) was held online from July 18–29, 2022. The meeting consisted of three plenary sessions and 20 parallel sessions as well as technical reviews. About 180 scientists from Asia, Europe, and the Americas attended the meeting.
Two 650 MHz single-cell superconducting cavities (#1 and #2) for the Circular Electron Positron Collider (CEPC) received vertical tests (@ 2.0 K) at the Platform of Advanced Photon Source Technology R&D (PAPS) in June and July. The accelerating gradients of the cavities reached 41.0 MV/m and 41.6 MV/m, respectively.
Neutron stars have the strongest magnetic fields in the universe, and the only way to measure their surface magnetic field directly is to observe the cyclotron absorption lines in their X-ray energy spectra. The Insight-HXMT team has recently discovered a cyclotron absorption line with an energy of 146 keV in the neutron star X-ray binary Swift J0243.6+6124, corresponding to a surface magnetic field of more than 1.6 billion Tesla.
Assembly and installation of the main structure for the central detector of the Jiangmen Underground Neutrino Observatory (JUNO) were successfully completed on June 24. The main structure consists of a spherical stainless steel shell 41 meters in diameter.
Widespread use of lithium-ion batteries in portable electronics and electric vehicles has made improving battery performance a key research focus in recent years. Since battery particle cracks seriously degrade lithium-ion battery performance, many scientists are focused on how to avoid such cracks. Recently, the 4W1A imaging experimental station of the Beijing Synchrotron Radiation Facility (BSRF), Institute of High Energy Physics, Chinese Academy of Sciences, cooperated with LIU Yijin's research group at the Stanford Synchrotron Radiation Light Source and Peter Cloetens’ research group at the European Synchrotron Radiation Facility (ESRF) to study the crack generation mechanism of commercial 18650 battery cathode material by using deep learning technology and synchrotron radiation, nano-resolution CT imaging technology.
Recently, 166 MHz and 500 MHz superconducting radio-frequency (SRF) cavities for HEPS successfully completed vertical testing at the Platform of Advanced Photon Source Technology R&D (PAPS) in Huairou, Beijing. The performance of these cavities at cryogenic temperatures largely exceeded the design goals for the High Energy Photon Source (HEPS). These cavities were developed in-house by the HEPS Radio Frequency (RF) work package. The success of these cavities establishes a strong basis for the subsequent development of the dressed cavity with a helium vessel and batch production of the cavities.
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