Sam Fann
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View article: Diagnosis Application by Great Amount Operation Data Analysis Program for Taiwan Photon Source
Diagnosis Application by Great Amount Operation Data Analysis Program for Taiwan Photon Source Open
To find out abnormal situations of the machine for preventive maintenance or machine trip tracking or instability source diagnosis, a large amount of operating data in an accelerator is thus can be used to build a series data analysis prog…
View article: A Method to Tune Pulse Magnets' Waveforms
A Method to Tune Pulse Magnets' Waveforms Open
Pulse magnets are used in storage ring injection kickers. The waveform of the the four kickers have strong relation with injection efficiency. A slightly offset of waveform may cause the four kickers mismatched, which would lead to storage…
View article: TPS Beam Trip Analysis and Dose Distribution
TPS Beam Trip Analysis and Dose Distribution Open
Failure analysis during TPS users operation is im-portant to improve the performance of the TPS storage ring. In this report, we discuss the particular radiation dose patterns, relevant to different beam trips, and the development of a too…
View article: Preliminary study of injection transients in the TPS storage ring
Preliminary study of injection transients in the TPS storage ring Open
An optimized injection efficiency is related to a perfect match between the pulsed magnetic fields in the storage ring and transfer line extraction in the TPS. However, misalignment errors, hardware output errors and leakage fields are una…
View article: The experience of Taiwan photon source commissioning and operation
The experience of Taiwan photon source commissioning and operation Open
TPS commissioning occurred between August 2014 and March 2016. The experience of phase I (bare lattice 2014.8∼2015.3) and phase II (SRF and insertion devices 2015.9∼2016.3) commissioning will be discussed. The Taiwan Photon Source (TPS) st…
View article: Characterization of the THz Radiation-Based Bunch Length Measurement System for the NSRRC Photoinjector
Characterization of the THz Radiation-Based Bunch Length Measurement System for the NSRRC Photoinjector Open
A part of high brightness photo-injection (HBI) project at NSRRC is intending to adopt Coherent Transition Radiation (CTR) and Coherent Undulator Radiation (CUR) to generate THz radiation with an ultrashort electron bunch. Such high intens…
View article: A Fast Gain Calibration Algorithm for Beam Position Monitoring at Taiwan Photon Source
A Fast Gain Calibration Algorithm for Beam Position Monitoring at Taiwan Photon Source Open
A stable, reliable and well-calibrated beam position monitor (BPM) system is essential for the operation of accelerators. At newly constructed Taiwan Photon Source (TPS), it not only helps us to determine the accelerator parameters, such a…
View article: Preliminary Study of Injection Transients in TPS Storage Ring
Preliminary Study of Injection Transients in TPS Storage Ring Open
An optimized injection efficiency is related to a perfect match between the pulsed magnetic fields in the storage ring and transfer line extraction in the TPS. However, misalignment errors, hardware output errors and leakage fields are una…
View article: Development of Automatic Turn-on Systems for TPS Machine
Development of Automatic Turn-on Systems for TPS Machine Open
The Taiwan Photon Source (TPS) has been successfully commissioned and has reached now stable operation. Now, the machine must be turned off routinely for week-ly maintenance. While following standard machine turn-on procedures for now, we …
View article: Introduction of Operating Procedures at TPS
Introduction of Operating Procedures at TPS Open
The Taiwan Photon Source (TPS) is the latest generation of 3 GeV synchrotron light source which subsystem includes magnet, power supply, vacuum, RF system, insertion device, control system, etc. The operating procedures and checking items …
View article: Precise Betastron Tune Measurement in TPS Storage Ring
Precise Betastron Tune Measurement in TPS Storage Ring Open
To acquire precise beam orbits from beam position monitors (BPMs) in storage ring is one of the most significant diagnosis to measure beam parameters. However, the precise spectrum analyses from BPM data acquisitions such as betatron tune,…
View article: The Commmissioning of Phase-I Insertion Devices in TPS
The Commmissioning of Phase-I Insertion Devices in TPS Open
The Taiwan Photon Source (TPS) is a low-emittance 3-GeV light source at Natioal Synchrotron Radiation Research Center, next to the Taiwan Light source (1.5 GeV). On March 26, 2015, the TPS storage ring with two 5-cell PETRA cavities has su…
View article: Development of Intelligent Alarm Message System at TPS
Development of Intelligent Alarm Message System at TPS Open
The traditional alarm systems usually set up/low limit for various signals. When the acquired values exceed the limits, the alarm system would be activated. The proposed system in this article can focus on various possible events with many…