IPAC2017 - Classification: 06 Beam Instrumentation, Controls, Feedback and Operational Aspects / T23 Machine Protection

Paper	Title	Page
TUPIK057	The Real-Time Waveform Mask Interlock System for the RF Gun Conditioning of the ELI-NP Gamma Beam System	1822
	S. Pioli, D. Alesini, A. Gallo, L. Piersanti INFN/LNF, Frascati (Roma), Italy F. Cardelli, L. Palumbo University of Rome La Sapienza, Rome, Italy D.T. Palmer Istituto Nazionale di Fisica Nucleare, Milano, Italy
	The new Gamma Beam System (GBS), within the ELI-NP project, under installation in Magurele (RO) by INFN, as part of EuroGammas consortium, can provide gamma rays that open new possibilities for nuclear photonics and nuclear physics. ELI-GBS gamma rays are produced by Compton back-scattering to get monochromaticity (0,1% bandwidth), high flux (10¹³ photon/s the highest in the world), tunable directions and energies up to 19 MeV. Such gamma beam is obtained when a high-intensity laser collides a high-brightness electronbeam with energies up to 720 MeV. The RF-Gun, made with the novel clamping gasket technique, working in '-mode at 100 Hz with a max. RF input of 16 MW, RF peak field of 120 MV/m and filling time of 420 ns was fully tested and conditioned few month ago at ELSA. This paper will describe the real-time fast-interlock system based on waveform mask technique used during RF Gun conditioning in order to monitor on-line reflected RF signals for a faster pulse-to-pulse detection of breakdowns and to ensure the safety of Gun and modulator tripping such devices before next RF pulse.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK057
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TUPIK058	The Machine Protection System for the ELI-NP Gamma Beam System	1824
	S. Pioli, D. Alesini, D. Di Giovenale, G. Di Pirro, A. Gallo, L. Piersanti, A. Vannozzi, A. Variola INFN/LNF, Frascati (Roma), Italy F. Cardelli, L. Palumbo University of Rome La Sapienza, Rome, Italy
	The new Gamma Beam System (GBS), within the ELI-NP project, under installation in Magurele (RO) by INFN, as part of EuroGammas consortium, can provide gamma rays that open new possibilities for nuclear photonics and nuclear physics. ELI-GBS gamma rays are produced by Compton back-scattering to get monochromaticity (0,1% bandwidth), high flux (10¹³ photon/s the highest in the world), tunable directions and energies up to 19 MeV. Such gamma beam is obtained when a high-intensity laser collides a high-brightness electron beam with energies up to 720 MeV with a repetition rate of 100 Hz in multi-bunch mode with trains of 32 bunches. An advanced Machine Protection System was developed in order to ensure proper operation for this challenging facility. Such system operate on different layers of the control system to be interfaced with all sub-systems of the control system. It's equipped with different beam loss monitors based on Cherenkov optical fiber, hall probes, fast current transformer together with BPM and an embedded system based on FPGA with distributed I/O over EtherCAT to monitor vacuum and RF systems which requires fast response to be interlocked within the next RF pulse.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK058
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TUPIK063	The Configurable Software Interlock System for HLS-II	1836
SUSPSIK086	use link to see paper's listing under its alternate paper code
	Y. Song, G. Liu, K. Xuan USTC/NSRL, Hefei, Anhui, People's Republic of China
	The interlock system is an essential component for an accelerator facility. A configurable software interlock system(SIS) is designed for Hefei Light Source II (HLS-II), which complements the hardware interlock system to ensure equipment and operators' safety. The system is developed using Python under the EPICS framework with the method of separating the configuration file from the interlock program. The interlock logic is completely determined by the configuration file and its nested tree structure is easy to expand. The test results indicate that the new software interlock system is reliable, flexible and convenient to operate. This paper will describe the design and the construction of HLS-II SIS.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK063
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TUPIK069	PXIe Embedded Control Station Based the Electric Breakdown Data Acquisition and RF Conditioning System for C-Band Accelerating Structures Using for Shanghai Soft X-Ray Free Electron Laser (SXFEL)	1855
	Y. Li, W. Fang, J.Z. Gong, Q. Gu, J.J. Guo, L. Li, Z.B. Li, J.H. Tan, C.C. Xiao, J.Q. Zhang, M. Zhang, Z.T. Zhao SINAP, Shanghai, People's Republic of China
	Funding: Shanghai Institute of Applied Physics, The Chinese Academy of Science., National Development and Reform Commission, the People's Republic of China., National Natural Science Foundation of China. Shanghai Soft X-Ray Free Electron Laser (SXFEL) adopts C-band structure to accelerate the electron to 1.5-GeV. Due to high gradient operation, the electric breakdown and structure conditioning problems need to be perfectly resolved. For this purpose, we develop an automatic conditioning control and electric breakdown data acquisition system. The control based on a PXI Express (PXIe) embedded frame and the LabView-FPGA technique. The prototype system design, the software programming and hardware test will be introduced. The experiment setup and test results for a low-level signal will be shown. ' Corresponding author: liyingmin@sinap.ac.cn
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK069
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TUPIK078	Machine Protection Risk Management of the ESS Target System	1876
	R. Andersson, E. Bargalló, L.S. Emås, J. Harborn, A. Lundgren, U. Odén, J. Ringnér, K. Sjögreen ESS, Lund, Sweden
	The European Spallation Source target system is, together with the proton linac, the main component in the spallation process. ESS will use a 4-ton, helium-cooled, rotating tungsten target for this purpose, and its protection and availability is paramount to the success of ESS. High demands are placed on all of the target equipment, including cooling, movement, rotation, and timing, in order to reach the facility-wide 95% availability goal for neutron production. Machine protection has defined a set of protection functions that are to be implemented for the target system. This paper describes the development of these protection functions through the use of classic HAZOPs combined with modern safety standard lifecycle management. The implementation of these functions is carried out through close collaboration between the target system owners and the machine protection group at ESS.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK078
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TUPIK079	Development and Status of Protection Functions for the Normal Conducting LINAC at ESS	1880
	R. Andersson, E. Bargalló, S. Kövecses, A. Nordt, M. Zaera-Sanz ESS, Lund, Sweden C. Hilbes, M. Rejzek ZHAW, Winterthur, Switzerland
	The European Spallation Source faces a great challenge in succeeding with its ambitious availability goals. The aim is to construct a machine that allows for 95% availability for neutron beam production. This goal requires a robust protection system that allows for high availability by continuously monitoring and acting on the machine states, in order to avoid long facility downtimes and optimize the operation at any stage. The normal conducting section consists of the first 48 meters of the machine, and performs the initial acceleration, bunching, steering, and focusing of the beam, which sets it up for optimal transition into the superconducting section. Through a fit-for-purpose risk management process, a set of protection functions has been identified. The risk identification, analysis, and treatment were done in compliance with modern safety and ISO standards. This ensures that the risks, in this case downtime and equipment damage, are properly prevented and mitigated. This paper describes this process of defining the protection functions for the normal conducting linac at ESS.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK079
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TUPIK083	Methodology, Design and Physical Deployment of Highly Dependable PLC Based Interlock Systems for ESS	1887
	M. Zaera-Sanz, S. Kövecses, A. Nordt ESS, Lund, Sweden
	Approximately 350 resistive magnets, 110 vacuum gate valves and 30 interceptive devices will be installed in the 600 m long linear accelerator at ESS, transporting the proton beam from the source to the target station. In order to protect this equipment from damage and to take the appropriate actions required to minimise recovery time, a dedicated set of PLC based interlock systems are being designed. The magnet powering interlock system will safely switch off a Power Converter (PC) upon the detection of an internal magnet or PC failure. The interceptive devices interlock system will protect Faraday cups, wire scanners, EMUs and LBMs from a beam mode that they cannot withstand by allowing/removing permission for movement. The vacuum gates interlock system will protect the gate valves in case of unexpected closing. The target interlock system will protect the target system by acting on motors, compressors, etc. These interlock systems will inform the beam interlock system to inhibit further beam operation by stopping beam if required. The methodology, design and physical deployment of the four interlock systems will be presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK083
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TUPIK087	Phase Advance Interlocking Throughout the Whole LHC Cycle	1901
	K. Fuchsberger, A. Calia, M.A. Galilée, G.H. Hemelsoet, M. Hostettler, D. Jacquet, J. Makai, M. Schaumann CERN, Geneva, Switzerland
	Each beam of CERN's Large Hadron Collider (LHC) stores 360 MJ at design energy and design intensity. In the unlikely event of an asynchronous beam dump, not all particles would be extracted immediately. They would still take one turn around the ring, oscillating with potentially high amplitudes. In case the beam would hit one of the experimental detectors or the collimators close to the interaction points, severe damage could occur. In order to minimize the risk during such a scenario, a new interlock system was put in place in 2016. This system guarantees a phase advance of zero degrees (within tolerances) between the extraction kicker and the interaction point. This contribution describes the motivation for this new system as well as the technical implementation and the strategies used to derive appropriate tolerances to allow sufficient protection without risking false beam dump triggers.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK087
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TUPIK088	Development of a New System for Detailed LHC Filling Diagnostics and Statistics	1905
	A. Calia, K. Fuchsberger, G.H. Hemelsoet, D. Jacquet CERN, Geneva, Switzerland
	In the CERN accelerator complex the Super Proton Synchrotron (SPS) is used as injector of the Large Hadron Collider (LHC). Statistics on the injection and beam availability in 2015 showed that too much time is spent at injection. Reducing this time could improve LHC availability and luminosity over the year. Currently, useful data to diagnose the problems is sparse and shown in different applications. Operators time is wasted in debugging and checking for the source of the problem before trying another injection. A new Software application for diagnostics of the LHC Filling is under development which collects data from multiple inputs of the CERN Control System and concentrates them in one central view. The inputs are processed and matched with a set of rules (or assertions) that need to be fulfilled for an injection to be successful. Whenever a problem occurs, the operator can check the Filling Diagnostic for hints on what is the source of the problem during the injection. Filling Diagnostic also produces statistics of the LHC injections and the causes of failed injections, this will allow significantly better analysis of the LHC performance for next year.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK088
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TUPIK101	Development and Construction of Safety and Control Systems for the TPS Front End Interlock	1947
	J. -Y. Chuang, C.K. Chan, Y.M. Hsiao, C.K. Kuan, Y.Z. Lin, I.C. Sheng, Y.C. Yang NSRRC, Hsinchu, Taiwan C.S. Lin NPUST, Pingtung, Taiwan
	The Taiwan photon source (TPS) at NSRRC (National Taiwan Photon Source) is a 3rd generation, 3 GeV storage ring with designed current of 500 mA. In phase-I, six insertion device beamlines have been available to users after the safety interlock systems were commissioned and reviewed. National Instrument (NI) compact RIO 9030 is used for the front end interlock control system, and both scan and FPGA modes are activated in a hybrid mode to enhance the safety reliability. The personnel and machine protection system as well as EPICS communications of the TPS control system are presented in this paper as well.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK101
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TUPIK107	Upgrade of the Existing PID Controller and Oxygen Detection Alarm System for SRF Modules Operating in the Taiwan Light Source	1968
	F.-T. Chung, F.Y. Chang, L.-H. Chang, M.H. Chang, L.J. Chen, M.-C. Lin, Z.K. Liu, C.H. Lo, C.L. Tsai, Ch. Wang, M.-S. Yeh, T.-C. Yu NSRRC, Hsinchu, Taiwan
	A Cornell-type superconducting RF cavity module was installed in the Taiwan Light Source (TLS) in 2004. New control electronics for the existing SRF modules have been designed, based on the original designs. In addition to the functions for operation, this SRF electronics system in the TLS also provides protection for the SRF modules and cryogenic system. This paper presents the SRF electronics modifications, which will enhance machine protection and make it easy to adjust and optimize operational parameters.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK107
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Paper

Title

Page

The Real-Time Waveform Mask Interlock System for the RF Gun Conditioning of the ELI-NP Gamma Beam System

1822

S. Pioli, D. Alesini, A. Gallo, L. Piersanti
INFN/LNF, Frascati (Roma), Italy
F. Cardelli, L. Palumbo
University of Rome La Sapienza, Rome, Italy
D.T. Palmer
Istituto Nazionale di Fisica Nucleare, Milano, Italy

The new Gamma Beam System (GBS), within the ELI-NP project, under installation in Magurele (RO) by INFN, as part of EuroGammas consortium, can provide gamma rays that open new possibilities for nuclear photonics and nuclear physics. ELI-GBS gamma rays are produced by Compton back-scattering to get monochromaticity (0,1% bandwidth), high flux (10¹³ photon/s the highest in the world), tunable directions and energies up to 19 MeV. Such gamma beam is obtained when a high-intensity laser collides a high-brightness electronbeam with energies up to 720 MeV. The RF-Gun, made with the novel clamping gasket technique, working in '-mode at 100 Hz with a max. RF input of 16 MW, RF peak field of 120 MV/m and filling time of 420 ns was fully tested and conditioned few month ago at ELSA. This paper will describe the real-time fast-interlock system based on waveform mask technique used during RF Gun conditioning in order to monitor on-line reflected RF signals for a faster pulse-to-pulse detection of breakdowns and to ensure the safety of Gun and modulator tripping such devices before next RF pulse.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK057

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TUPIK058

The Machine Protection System for the ELI-NP Gamma Beam System

1824

S. Pioli, D. Alesini, D. Di Giovenale, G. Di Pirro, A. Gallo, L. Piersanti, A. Vannozzi, A. Variola
INFN/LNF, Frascati (Roma), Italy
F. Cardelli, L. Palumbo
University of Rome La Sapienza, Rome, Italy

The new Gamma Beam System (GBS), within the ELI-NP project, under installation in Magurele (RO) by INFN, as part of EuroGammas consortium, can provide gamma rays that open new possibilities for nuclear photonics and nuclear physics. ELI-GBS gamma rays are produced by Compton back-scattering to get monochromaticity (0,1% bandwidth), high flux (10¹³ photon/s the highest in the world), tunable directions and energies up to 19 MeV. Such gamma beam is obtained when a high-intensity laser collides a high-brightness electron beam with energies up to 720 MeV with a repetition rate of 100 Hz in multi-bunch mode with trains of 32 bunches. An advanced Machine Protection System was developed in order to ensure proper operation for this challenging facility. Such system operate on different layers of the control system to be interfaced with all sub-systems of the control system. It's equipped with different beam loss monitors based on Cherenkov optical fiber, hall probes, fast current transformer together with BPM and an embedded system based on FPGA with distributed I/O over EtherCAT to monitor vacuum and RF systems which requires fast response to be interlocked within the next RF pulse.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK058

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TUPIK063

The Configurable Software Interlock System for HLS-II

1836

SUSPSIK086

use link to see paper's listing under its alternate paper code

Y. Song, G. Liu, K. Xuan
USTC/NSRL, Hefei, Anhui, People's Republic of China

The interlock system is an essential component for an accelerator facility. A configurable software interlock system(SIS) is designed for Hefei Light Source II (HLS-II), which complements the hardware interlock system to ensure equipment and operators' safety. The system is developed using Python under the EPICS framework with the method of separating the configuration file from the interlock program. The interlock logic is completely determined by the configuration file and its nested tree structure is easy to expand. The test results indicate that the new software interlock system is reliable, flexible and convenient to operate. This paper will describe the design and the construction of HLS-II SIS.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK063

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TUPIK069

PXIe Embedded Control Station Based the Electric Breakdown Data Acquisition and RF Conditioning System for C-Band Accelerating Structures Using for Shanghai Soft X-Ray Free Electron Laser (SXFEL)

1855

Y. Li, W. Fang, J.Z. Gong, Q. Gu, J.J. Guo, L. Li, Z.B. Li, J.H. Tan, C.C. Xiao, J.Q. Zhang, M. Zhang, Z.T. Zhao
SINAP, Shanghai, People's Republic of China

Funding: Shanghai Institute of Applied Physics, The Chinese Academy of Science., National Development and Reform Commission, the People's Republic of China., National Natural Science Foundation of China.
Shanghai Soft X-Ray Free Electron Laser (SXFEL) adopts C-band structure to accelerate the electron to 1.5-GeV. Due to high gradient operation, the electric breakdown and structure conditioning problems need to be perfectly resolved. For this purpose, we develop an automatic conditioning control and electric breakdown data acquisition system. The control based on a PXI Express (PXIe) embedded frame and the LabView-FPGA technique. The prototype system design, the software programming and hardware test will be introduced. The experiment setup and test results for a low-level signal will be shown.
' Corresponding author: liyingmin@sinap.ac.cn

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK069

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TUPIK078

Machine Protection Risk Management of the ESS Target System

1876

R. Andersson, E. Bargalló, L.S. Emås, J. Harborn, A. Lundgren, U. Odén, J. Ringnér, K. Sjögreen
ESS, Lund, Sweden

The European Spallation Source target system is, together with the proton linac, the main component in the spallation process. ESS will use a 4-ton, helium-cooled, rotating tungsten target for this purpose, and its protection and availability is paramount to the success of ESS. High demands are placed on all of the target equipment, including cooling, movement, rotation, and timing, in order to reach the facility-wide 95% availability goal for neutron production. Machine protection has defined a set of protection functions that are to be implemented for the target system. This paper describes the development of these protection functions through the use of classic HAZOPs combined with modern safety standard lifecycle management. The implementation of these functions is carried out through close collaboration between the target system owners and the machine protection group at ESS.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK078

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TUPIK079

Development and Status of Protection Functions for the Normal Conducting LINAC at ESS

1880

R. Andersson, E. Bargalló, S. Kövecses, A. Nordt, M. Zaera-Sanz
ESS, Lund, Sweden
C. Hilbes, M. Rejzek
ZHAW, Winterthur, Switzerland

The European Spallation Source faces a great challenge in succeeding with its ambitious availability goals. The aim is to construct a machine that allows for 95% availability for neutron beam production. This goal requires a robust protection system that allows for high availability by continuously monitoring and acting on the machine states, in order to avoid long facility downtimes and optimize the operation at any stage. The normal conducting section consists of the first 48 meters of the machine, and performs the initial acceleration, bunching, steering, and focusing of the beam, which sets it up for optimal transition into the superconducting section. Through a fit-for-purpose risk management process, a set of protection functions has been identified. The risk identification, analysis, and treatment were done in compliance with modern safety and ISO standards. This ensures that the risks, in this case downtime and equipment damage, are properly prevented and mitigated. This paper describes this process of defining the protection functions for the normal conducting linac at ESS.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK079

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TUPIK083

Methodology, Design and Physical Deployment of Highly Dependable PLC Based Interlock Systems for ESS

1887

M. Zaera-Sanz, S. Kövecses, A. Nordt
ESS, Lund, Sweden

Approximately 350 resistive magnets, 110 vacuum gate valves and 30 interceptive devices will be installed in the 600 m long linear accelerator at ESS, transporting the proton beam from the source to the target station. In order to protect this equipment from damage and to take the appropriate actions required to minimise recovery time, a dedicated set of PLC based interlock systems are being designed. The magnet powering interlock system will safely switch off a Power Converter (PC) upon the detection of an internal magnet or PC failure. The interceptive devices interlock system will protect Faraday cups, wire scanners, EMUs and LBMs from a beam mode that they cannot withstand by allowing/removing permission for movement. The vacuum gates interlock system will protect the gate valves in case of unexpected closing. The target interlock system will protect the target system by acting on motors, compressors, etc. These interlock systems will inform the beam interlock system to inhibit further beam operation by stopping beam if required. The methodology, design and physical deployment of the four interlock systems will be presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK083

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TUPIK087

Phase Advance Interlocking Throughout the Whole LHC Cycle

1901

K. Fuchsberger, A. Calia, M.A. Galilée, G.H. Hemelsoet, M. Hostettler, D. Jacquet, J. Makai, M. Schaumann
CERN, Geneva, Switzerland

Each beam of CERN's Large Hadron Collider (LHC) stores 360 MJ at design energy and design intensity. In the unlikely event of an asynchronous beam dump, not all particles would be extracted immediately. They would still take one turn around the ring, oscillating with potentially high amplitudes. In case the beam would hit one of the experimental detectors or the collimators close to the interaction points, severe damage could occur. In order to minimize the risk during such a scenario, a new interlock system was put in place in 2016. This system guarantees a phase advance of zero degrees (within tolerances) between the extraction kicker and the interaction point. This contribution describes the motivation for this new system as well as the technical implementation and the strategies used to derive appropriate tolerances to allow sufficient protection without risking false beam dump triggers.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK087

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TUPIK088

Development of a New System for Detailed LHC Filling Diagnostics and Statistics

1905

A. Calia, K. Fuchsberger, G.H. Hemelsoet, D. Jacquet
CERN, Geneva, Switzerland

In the CERN accelerator complex the Super Proton Synchrotron (SPS) is used as injector of the Large Hadron Collider (LHC). Statistics on the injection and beam availability in 2015 showed that too much time is spent at injection. Reducing this time could improve LHC availability and luminosity over the year. Currently, useful data to diagnose the problems is sparse and shown in different applications. Operators time is wasted in debugging and checking for the source of the problem before trying another injection. A new Software application for diagnostics of the LHC Filling is under development which collects data from multiple inputs of the CERN Control System and concentrates them in one central view. The inputs are processed and matched with a set of rules (or assertions) that need to be fulfilled for an injection to be successful. Whenever a problem occurs, the operator can check the Filling Diagnostic for hints on what is the source of the problem during the injection. Filling Diagnostic also produces statistics of the LHC injections and the causes of failed injections, this will allow significantly better analysis of the LHC performance for next year.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK088

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TUPIK101

Development and Construction of Safety and Control Systems for the TPS Front End Interlock

1947

J. -Y. Chuang, C.K. Chan, Y.M. Hsiao, C.K. Kuan, Y.Z. Lin, I.C. Sheng, Y.C. Yang
NSRRC, Hsinchu, Taiwan
C.S. Lin
NPUST, Pingtung, Taiwan

The Taiwan photon source (TPS) at NSRRC (National Taiwan Photon Source) is a 3rd generation, 3 GeV storage ring with designed current of 500 mA. In phase-I, six insertion device beamlines have been available to users after the safety interlock systems were commissioned and reviewed. National Instrument (NI) compact RIO 9030 is used for the front end interlock control system, and both scan and FPGA modes are activated in a hybrid mode to enhance the safety reliability. The personnel and machine protection system as well as EPICS communications of the TPS control system are presented in this paper as well.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK101

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TUPIK107

Upgrade of the Existing PID Controller and Oxygen Detection Alarm System for SRF Modules Operating in the Taiwan Light Source

1968

F.-T. Chung, F.Y. Chang, L.-H. Chang, M.H. Chang, L.J. Chen, M.-C. Lin, Z.K. Liu, C.H. Lo, C.L. Tsai, Ch. Wang, M.-S. Yeh, T.-C. Yu
NSRRC, Hsinchu, Taiwan

A Cornell-type superconducting RF cavity module was installed in the Taiwan Light Source (TLS) in 2004. New control electronics for the existing SRF modules have been designed, based on the original designs. In addition to the functions for operation, this SRF electronics system in the TLS also provides protection for the SRF modules and cryogenic system. This paper presents the SRF electronics modifications, which will enhance machine protection and make it easy to adjust and optimize operational parameters.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK107

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