Huihua Lu
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View article: Impedance characterization and optimization of the High Energy Photon Source in-vacuum undulator
Impedance characterization and optimization of the High Energy Photon Source in-vacuum undulator Open
In storage ring-based synchrotron radiation light sources, in-vacuum undulators (IVUs) are widely used considering their advantages of short period length and high field quality. The impedance of the IVU and heat load deposition due to the…
View article: Functional study of RNA alternative splicing in zebrafish adaptation to low temperature
Functional study of RNA alternative splicing in zebrafish adaptation to low temperature Open
View article: Functional study of RNA alternative splicing in zebrafish adaptation to low temperature
Functional study of RNA alternative splicing in zebrafish adaptation to low temperature Open
View article: Giant interfacial Dzyaloshinskii-Moriya Interaction in perovskite La_{0.7}Sr_{0.3}MnO_{3} films
Giant interfacial Dzyaloshinskii-Moriya Interaction in perovskite La_{0.7}Sr_{0.3}MnO_{3} films Open
The Dzyaloshinskii-Moriya interaction (DMI) plays a critical role in stabilizing topological spin textures, a key area of growing interest in oxide-based spintronics. While most of reported topological phenomena found in manganites are rel…
View article: Mango wiggler as a novel insertion device providing a large and symmetrical imaging field of view
Mango wiggler as a novel insertion device providing a large and symmetrical imaging field of view Open
A novel insertion device is introduced, designated as the Mango wiggler, designed for synchrotron radiation (SR) imaging that provides a large field of view. This innovative device is constructed from two orthogonal planar wigglers with a …
View article: Study on the influence of gap dependent error on the cryogenic permanent magnet undulator performance
Study on the influence of gap dependent error on the cryogenic permanent magnet undulator performance Open
The mass production of the first stage of HEPS (High Energy Photon Source) is approaching its final stage. 6 CPMUs (cryogenic permanent magnet undulators) have been manufactured, with four successfully finalizing the tuning of the magnetic…
View article: Status of HEPS Insertion Devices Design
Status of HEPS Insertion Devices Design Open
HEPS is a 4th generation light source with the energy of 6 GeV and ultralow emittance of 34 pm.rad. A total of 14 beamlines with 19 insertion devices has been planned in the first phase, including 6 cryogenic undulators, 5 in-vacuum undula…
View article: Progress of HEPS Accelerator System Design
Progress of HEPS Accelerator System Design Open
The 4th generation ring-based light sources, HEPS (High Energy Photon Source) 7BA lattice has been de-veloped at IHEP. This is 6Gev, 200mA machine which has horizontal emittance Ɛh around 60pm.rad to gain the high brilliance photon beam. t…
View article: Mechanical Design of a Cryogenic Permanent Magnet Undulator at IHEP
Mechanical Design of a Cryogenic Permanent Magnet Undulator at IHEP Open
High Energy Photon Source (HEPS) at Institute of High energy Physics (IHEP) is a new 6 GeV third generation electron storage ring. Insertion devices play a significant role in achieving the high performance of the photon source. A 13.5mm p…
View article: Development of a PrFeB Cryogenic Permanent Magnet Undulator (CPMU) Prototype at IHEP
Development of a PrFeB Cryogenic Permanent Magnet Undulator (CPMU) Prototype at IHEP Open
A PrFeB cryogenic permanent magnet undulator (CPMU) prototype is under construction for High Energy Photon Source Test Facility (HEPS-TF) at IHEP. The device is a full scale in-vacuum undulator with a magnetic length of 2 meters and a peri…
View article: Design of the CPMU Vacuum System at the HEPS
Design of the CPMU Vacuum System at the HEPS Open
The High Energy Photon Source (HEPS) is a 3rd generation synchrotron radiation light source. Its beam energy is 6 GeV and its emittance is less than 60 pm'rad, which can provide high brilliance hard X-rays to several tens of experimental s…
View article: Hall Element Relative Position and Angle Calibrations for the Cryogenic Permanent Magnet Undulator
Hall Element Relative Position and Angle Calibrations for the Cryogenic Permanent Magnet Undulator Open
A three dimensions Hall probe will be manufactured for characterizing the magnetic performance of Cryogenic Permanent Magnet Undulator (CPMU) of Chinese High Energy Photon Source and the test facility (HEPS-TF) at Institute of High Energy …
View article: Field Error Correction Considerations of Cryogenic Permanent Magnet Undulator (CPMU) for High Energy Photon Source Test Facility (HEPS-TF)*
Field Error Correction Considerations of Cryogenic Permanent Magnet Undulator (CPMU) for High Energy Photon Source Test Facility (HEPS-TF)* Open
Considerations are made for field error corrections of a 2m-long CPMU in built for HEPS-TF. Field changes in cooling to liquid nitrogen temperature are simulated. 1st field integral of terminal changes by tens of Gauss cm and RMS of phase …
View article: Semi-supervised and Active Learning Models for Software Fault Prediction
Semi-supervised and Active Learning Models for Software Fault Prediction Open
As software continues to insinuate itself into nearly every aspect of our life, the quality of software has been an extremely important issue. Software Quality Assurance (SQA) is a process that ensures the development of high-quality softw…