IPAC2017 - List of Authors (Luo, G.-H.)

Paper	Title	Page
MOPAB124	A Fast Gain Calibration Algorithm for Beam Position Monitoring at Taiwan Photon Source	419
	J.Y. Chen, C.H. Chen, M.-S. Chiu, P.C. Chiu, P.J. Chou, S. Fann, K.H. Hu, C.S. Huang, C.-C. Kuo, T.Y. Lee, C.C. Liang, Y.-C. Liu, G.-H. Luo, H.-J. Tsai, F.H. Tseng NSRRC, Hsinchu, Taiwan
	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 as Twiss parameters and tune, but also to avoid the damage on accelerator instruments caused by high-energy particle beams or radiation. In this study, we demonstrate a new BPM calibration scheme at TPS storage ring. To excite the electron beams inside accelerator beam pipe by one horizontal or vertical corrector magnet, we measure the response of analog-to-digital converter (ADC) of each BPM pick-up electrodes with different lateral positions and beam currents. Depending on the measured ADC responses, we calibrated the beam position monitor system. Simultaneously, because of limited preparation time after every long shutdown, we are looking for a fast algorithm to ensure the measurement could be done easily and finished as quickly as possible.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB124
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MOPIK105	Preliminary Study of Injection Transients in TPS Storage Ring	777
	C.H. Chen, B.Y. Chen, J.Y. Chen, M.-S. Chiu, S. Fann, C.S. Huang, C.-C. Kuo, T.Y. Lee, C.C. Liang, Y.-C. Liu, G.-H. Luo, H.-J. Tsai, F.H. Tseng NSRRC, Hsinchu, Taiwan
	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 unavoidable. We study the influence of injection transients on the stored TPS beam and discuss solutions to compensate these. Related simulations and measurements will be presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPIK105
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WEOCA2	Experience of Taiwan Photon Source Commissioning and Operation	2495
	Y.-C. Liu, C.H. Chen, J.Y. Chen, M.-S. Chiu, P.J. Chou, S. Fann, C.S. Huang, C.-C. Kuo, T.Y. Lee, C.C. Liang, G.-H. Luo, H.-J. Tsai, F.H. Tseng NSRRC, Hsinchu, Taiwan
	The TPS commissioning period is from August 2014 to March 2016. The experience of phase I [1] (bare lattice 2014.8~2015.3) and phase II [2,3] (SRF and insertion devices 2015.9~2016.3) commissioning is overviewed. Taiwan Photon Source (TPS) started user operation in March 2016. The delivery user time reached 3211 hours. The continuous improvements of integrated accelerator performance are described and future developments are discussed.
	Slides WEOCA2 [32.368 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEOCA2
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WEPVA127	Design of a 3.5 T Superconducting Multipole Wiggler	3564
	J.C. Jan, C.-H. Chang, H.-H. Chen, S.D. Chen, T.Y. Chung, C.-S. Hwang, F.-Y. Lin, G.-H. Luo NSRRC, Hsinchu, Taiwan
	A 3.5 T superconducting multipole wiggler (SMPW) has been designed through the collaboration of National Synchrotron Radiation Research Center (NSRRC) and Synchrotron Light Research Institute (SLRI). The SMPW will support the hard X-ray source for the X-ray absorption spectroscopy (XAS) beamline in SLRI. The design concept of the SMPW follows from, and improves on, the operating experience of the superconducting magnet in NSRRC. An improvement of the operation and compatible with the cooling capacity of the cryogenic system, is the design goal. A quick and easy recovery of the magnet from a quench event is also required. The design of the magnet circuit and the mechanical of the SMPW are also discussed herein.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPVA127
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Paper

Title

Page

A Fast Gain Calibration Algorithm for Beam Position Monitoring at Taiwan Photon Source

419

J.Y. Chen, C.H. Chen, M.-S. Chiu, P.C. Chiu, P.J. Chou, S. Fann, K.H. Hu, C.S. Huang, C.-C. Kuo, T.Y. Lee, C.C. Liang, Y.-C. Liu, G.-H. Luo, H.-J. Tsai, F.H. Tseng
NSRRC, Hsinchu, Taiwan

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 as Twiss parameters and tune, but also to avoid the damage on accelerator instruments caused by high-energy particle beams or radiation. In this study, we demonstrate a new BPM calibration scheme at TPS storage ring. To excite the electron beams inside accelerator beam pipe by one horizontal or vertical corrector magnet, we measure the response of analog-to-digital converter (ADC) of each BPM pick-up electrodes with different lateral positions and beam currents. Depending on the measured ADC responses, we calibrated the beam position monitor system. Simultaneously, because of limited preparation time after every long shutdown, we are looking for a fast algorithm to ensure the measurement could be done easily and finished as quickly as possible.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB124

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOPIK105

Preliminary Study of Injection Transients in TPS Storage Ring

777

C.H. Chen, B.Y. Chen, J.Y. Chen, M.-S. Chiu, S. Fann, C.S. Huang, C.-C. Kuo, T.Y. Lee, C.C. Liang, Y.-C. Liu, G.-H. Luo, H.-J. Tsai, F.H. Tseng
NSRRC, Hsinchu, Taiwan

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 unavoidable. We study the influence of injection transients on the stored TPS beam and discuss solutions to compensate these. Related simulations and measurements will be presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPIK105

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEOCA2

Experience of Taiwan Photon Source Commissioning and Operation

2495

Y.-C. Liu, C.H. Chen, J.Y. Chen, M.-S. Chiu, P.J. Chou, S. Fann, C.S. Huang, C.-C. Kuo, T.Y. Lee, C.C. Liang, G.-H. Luo, H.-J. Tsai, F.H. Tseng
NSRRC, Hsinchu, Taiwan

The TPS commissioning period is from August 2014 to March 2016. The experience of phase I [1] (bare lattice 2014.8~2015.3) and phase II [2,3] (SRF and insertion devices 2015.9~2016.3) commissioning is overviewed. Taiwan Photon Source (TPS) started user operation in March 2016. The delivery user time reached 3211 hours. The continuous improvements of integrated accelerator performance are described and future developments are discussed.

Slides WEOCA2 [32.368 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEOCA2

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPVA127

Design of a 3.5 T Superconducting Multipole Wiggler

3564

J.C. Jan, C.-H. Chang, H.-H. Chen, S.D. Chen, T.Y. Chung, C.-S. Hwang, F.-Y. Lin, G.-H. Luo
NSRRC, Hsinchu, Taiwan

A 3.5 T superconducting multipole wiggler (SMPW) has been designed through the collaboration of National Synchrotron Radiation Research Center (NSRRC) and Synchrotron Light Research Institute (SLRI). The SMPW will support the hard X-ray source for the X-ray absorption spectroscopy (XAS) beamline in SLRI. The design concept of the SMPW follows from, and improves on, the operating experience of the superconducting magnet in NSRRC. An improvement of the operation and compatible with the cooling capacity of the cryogenic system, is the design goal. A quick and easy recovery of the magnet from a quench event is also required. The design of the magnet circuit and the mechanical of the SMPW are also discussed herein.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPVA127

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)