Manzhou Zhang
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View article: Real-Time-Capable Betatron Tune Measurement from Schottky Spectra Using Deep Learning and Uncertainty-Aware Kalman Filtering
Real-Time-Capable Betatron Tune Measurement from Schottky Spectra Using Deep Learning and Uncertainty-Aware Kalman Filtering Open
Betatron tune measurement is essential for beam control in compact proton-therapy synchrotrons, yet conventional peak-detection techniques are not robust under the low signal-to-noise ratio (SNR) conditions typical of these machines. This …
View article: High-Accuracy Schottky Diagnostics for Low-SNR Betatron Tune Measurement in Ramping Synchrotrons
High-Accuracy Schottky Diagnostics for Low-SNR Betatron Tune Measurement in Ramping Synchrotrons Open
This study introduces a novel real-time betatron tune measurement algorithm, utilizing Schottky signals and an FPGA-based backend architecture, specifically designed for rapidly ramping synchrotrons, with particular application to the Shan…
View article: Investigation into the Uniformization of Proton Beams for FLASH Therapy
Investigation into the Uniformization of Proton Beams for FLASH Therapy Open
FLASH proton therapy is widely considered in many labs. However, achieving a dose rate sufficient for FLASH is challenging, especially when using the scanning method. A beam uniformization process using a nonlinear magnet is employed to re…
View article: SAPT: a synchrotron-based proton therapy facility in Shanghai
SAPT: a synchrotron-based proton therapy facility in Shanghai Open
Because of its excellent dose distribution, proton therapy is becoming increasingly popular in the medical application of cancer treatment. A synchrotron-based proton therapy facility was designed and constructed in Shanghai. The synchrotr…
View article: 3D Proton Bragg Peak Visualization and Spot Shape Measurement with Polymer Gel Dosimeters
3D Proton Bragg Peak Visualization and Spot Shape Measurement with Polymer Gel Dosimeters Open
Proton pencil beam scanning is a dynamic beam delivery technique with excellent conformability to the tumor volume. The accuracy of spot size and scanning positions will have a significant effect on the delivered dose distribution. We empl…
View article: Dose-Area Product Determination and Beam Monitor Calibration for the Fixed Beam of the Shanghai Advanced Proton Therapy Facility
Dose-Area Product Determination and Beam Monitor Calibration for the Fixed Beam of the Shanghai Advanced Proton Therapy Facility Open
Research conducted to-date, makes use of the IBA-Lynx scintillating screen and radiochromic film to analyze the proton field uniformity for dose-area product (DAP) determination. In this paper, the machine log file based reconstruction is …
View article: Study of electrostatic septum design and its high-voltage discharge protection
Study of electrostatic septum design and its high-voltage discharge protection Open
In this paper, we introduce the design of electrostatic septum (ESS) for the accelerator of Shanghai Advanced Proton Therapy (SAPT), and discuss its mechanical structure and the material selection of the electrode. The beam loss on the sep…
View article: Scanned Proton Beam Performance and Calibration of the Shanghai Advanced Proton Therapy Facility
Scanned Proton Beam Performance and Calibration of the Shanghai Advanced Proton Therapy Facility Open
The Shanghai Advanced Proton Therapy facility (SAPT) is a hospital-based facility that began construction in December of 2014 with commissioning of the first scanned proton beam line starting in October of 2017. Proton beams are extracted …
View article: Commissioning of Shanghai Advance Proton Therapy
Commissioning of Shanghai Advance Proton Therapy Open
Shanghai advance proton therapy (SAPT) is a dedicate facility for cancer treatment. The commissioning of the accelerator started at the end of April 2017, and the proton beam has been already transported to the treatment room. This paper s…
View article: Vertical Emittance Reduction in the SSRF Phase II Project
Vertical Emittance Reduction in the SSRF Phase II Project Open
The Shanghai Synchrotron Radiation Facility (SSRF) Phase II beamline project (SSRF Phase II) will implement the new lattice with dual-canted insertion devices, superbends and superconducting wiggler. The emittance coupling is one of the mo…
View article: On-axis Injection using a Sin Wave RF Kicker
On-axis Injection using a Sin Wave RF Kicker Open
On-axis injection is one of the critical issues for an ul-tra-low emittance storage ring which holds a rather small dynamic aperture. In order to reduce the challenges of the fast pulsed kicker design, a sin wave RF kicker is studied which…
View article: Parallel Optimization of Accelerator Toolbox by OpenMP and MPI
Parallel Optimization of Accelerator Toolbox by OpenMP and MPI Open
Parallel computing adopted in the simulation program of accelerators improves the computational efficiency, especially tracking with multi-particle and multi-turn which always takes a lot of time. Through investigating the operational prin…
View article: Multi-bunch injection for SSRF storage ring
Multi-bunch injection for SSRF storage ring Open
The multi-bunch injection has been adopt at SSRF which greatly increases the injection rate and reduces injection time compared to the single bunch injection. The multi-bunch injection will massively reduce the beam failure time during use…
View article: Lattice Design of the SSRF-U Storage Ring
Lattice Design of the SSRF-U Storage Ring Open
Multi-Bend Achromatic (MBA) cell has been well known to significantly reduce the beam emittance of the synchrotron radiation light sources in the past two decades. With the great development of the high gradient magnets, the small-aperture…
View article: Compensations of the DEPU Effects at the SSRF Storage Ring
Compensations of the DEPU Effects at the SSRF Storage Ring Open
A paired APPLE-II type Ellipsoid Polarized Undulator（DEPU）has been installed in the SSRF storage ring which can be mechanically switched between two undulators with difference period length. One of them get notable effects on the optics in…
View article: On-axis Injection Scheme for Ultimate Storage Ring with Double RF Systems
On-axis Injection Scheme for Ultimate Storage Ring with Double RF Systems Open
An on-axis injection scheme using double RF systems for an ultimate storage ring which holds very small dynamic aperture is proposed. By altering RF voltages, empty RF buckets can be created which will be used for on-axis injection. After …
View article: Consideration on the Future Major Upgrades of the SSRF Storage Ring
Consideration on the Future Major Upgrades of the SSRF Storage Ring Open
The SSRF storage ring was in operation from 2008, currently it is operating at the energy of 3.5GeV, the natural emittance of 3.9 nm-rad and the beam current of 240 mA, serving for 13 beamlines with 9 IDs. There will be around 40 operated …