IPAC2015 - List of Keywords (pick-up)

Paper	Title	Other Keywords	Page
MOPHA008	Investigation of Beam Halo Using In Vacuum Diamond Sensor at ATF2	electron, vacuum, controls, laser	791
	S. Liu, P. Bambade, F. Bogard, P. Cornebise, V. Kubytskyi, C. Sylvia LAL, Orsay, France A. Faus-Golfe, N. Fuster-Martínez IFIC, Valencia, Spain T. Tauchi, N. Terunuma KEK, Ibaraki, Japan T. Tauchi, N. Terunuma Sokendai, Ibaraki, Japan
	Funding: Chinese Scholarship Council, CNRS and P2IO LABEX Beam halo transverse distribution measurements are of great importance for the understanding of background sources of the nano-meter beam size monitor at the interaction point (IPBSM) of ATF2. One of the most critical issues for the beam halo measurement is to reach high dynamic range. Two in vacuum diamond sensor beam halo scanners (DSv) with four strips each have been developed for the investigation of beam halo transverse distributions at ATF2. The first DSv was installed for horizontal beam halo scanning after the interaction point (IP) of ATF2, in Nov. 2014. It aims to measure the beam halo distribution with large dynamic range (~10⁶), and investigate the possibility of probing the Compton recoil electrons produced in the interaction with the IPBSM laser beams. Studies to characterize the DS performance and measurements of horizontal beam halo performed in Nov.-Dec. 2014 are presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPHA008
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MOPTY004	Wakefield Monitor Experiments with X-Band Accelerating Structures	wakefield, linac, hardware, dipole	947
	R.L. Lillestøl, E. Adli, J. Pfingstner University of Oslo, Oslo, Norway R. Corsini, S. Döbert, W. Farabolini, L. Malina, W. Wuensch CERN, Geneva, Switzerland
	The accelerating structures for CLIC must be aligned with a precision of a few um with respect to the beam trajectory in order to mitigate emittance growth due to transverse wake fields. We report on first results from wake field monitor tests in an X-band structure, with a probe beam at the CLIC Test Facility. The monitors are currently installed in the CLIC Two-Beam Module. In order to fully demonstrate the feasibility of using wakefield monitors for CLIC, the precision of the monitors must be verified using a probe beam while simultaneously filling the structure with high power rf used to drive the accelerating mode. We outline plans to perform such a demonstration in the CLIC Test Facility.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPTY004
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MOPTY019	Precise Position Measurement by Analyzing the Correlation Between Electrodes of a Single Bpm	simulation, hardware, synchrotron, impedance	975
	Z.C. Chen SSRF, Shanghai, People's Republic of China L.W. Lai, Y.B. Leng, Y.B. Yan SINAP, Shanghai, People's Republic of China
	Beam position is one of the most important parameters in a particle accelerator. The more accurate and precise the measurement system is, the more features of the beam dynamics could be revealed. A method called model-independent analysis (MIA) takes advantage of multiple beam position monitors (BPM) on the storage ring to obtain the actual beam positions by removing the random noise of each BPM. Inspired by MIA, the original voltage waveforms obtained from the electrodes of a single BPM can also be decomposed to get the beam position information. This article discusses the results of the experiments and the evaluation of the performance of the BPM at the Shanghai Institute of Applied Physics.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPTY019
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MOPTY039	Compact Single Pass BPM	software, controls, FPGA, instrumentation	1013
	M. Žnidarčič, M. Cargnelutti, E. Janezic I-Tech, Solkan, Slovenia
	Monitoring and subsequent optimization of linacs and beam transfers requires specific instrumentation for beam position data acquisition and processing. Compact single pass BPM is the newly developed prototype intended for position and charge monitoring in classical single-multi bunch operation linacs and transfer lines. Flexibility of the instrument enables the installation on electron and proton single pass machines. The motivation, processing principles and first results are presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPTY039
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MOPTY056	Elena Orbit and Schottky Measurement Systems	FPGA, antiproton, hardware, diagnostics	1061
	L. Søby, M.E. Angoletta, R. Marco-Hernandez, J.C. Molendijk, F. Pedersen, J. Sanchez-Quesada CERN, Geneva, Switzerland M. Bau University of Brescia, Brescia, Italy M. Ferrari, V. Ferrari Università di Brescia, Brescia, Italy
	A new Extra Low ENergy Antiproton ring (ELENA) is under construction at CERN to further decelerate the antiprotons from the existing Antiproton Decelerator (AD) to an energy of just 100 keV. This contribution will describe the beam position system foreseen for ELENA and how it can be adapted for Schottky measurements. The orbit system being developed is based on electrostatic shoebox BPMs fitted with Digital Down Converters (DDC). The main requirement is to measure complete orbits every 20 ms with a resolution of 0.1mm for intensities in the range of 1-3x10⁷ charges. The pick-up signals will, after amplification with a low noise charge amplifier, be down-mixed to baseband for position computation. In order to provide the longitudinal Schottky diagnostics of un-bunched beams, the 20 BPM sum signals will, after time off flight corrections, be added digitally to give an expected S/N increase of 13 dB compared to using a single electrostatic pick-up.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPTY056
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MOPWI037	Upgrade and Operation of the Demonstration 4 GS/Sec. Intra-Bunch Instability Control System for the SPS	feedback, kicker, controls, FPGA	1246
	J.E. Dusatko, J.D. Fox, C.H. Rivetta, O. Turgut SLAC, Menlo Park, California, USA W. Höfle CERN, Geneva, Switzerland
	Funding: Work supported by the U.S. Department of Energy under contract # DE-AC02-76SF00515 and the US LHC Accelerator Research Program (LARP). We present the expanded system implementation and operational experience details for the “Demo” technology platform commissioned at the SPS in January 2015. The system has been expanded during the LS1 shutdown with added features. The upgraded system has enhanced performance and more robust synchronization to the beam and accelerator timing system. Central to the new features are 1 GHz bandwidth kickers and RF amplifiers (including associated equalizers) which allow excitation and control of higher modes within the 2 ns bunch. We highlight the expanded features, and present their details.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPWI037
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TUAC1	Beam Instrumentation and Diagnostics for High Luminosity LHC	synchrotron, radiation, diagnostics, collimation	1349
	O.R. Jones, E. Bravin, B. Dehning, T. Lefèvre, H. Schmickler CERN, Geneva, Switzerland
	The extensive array of beam instrumentation with which the LHC is equipped, has played a major role in its commissioning, rapid intensity ramp-up and safe and reliable operation. High Luminosity LHC (HL-LHC) brings with it a number of new challenges in terms of instrumentation that will be discussed in this contribution. The beam loss system will need significant upgrades in order to be able to cope with the demands of HL-LHC, with cryogenic beam loss monitors under investigation for deployment in the new inner triplet magnets to distinguish between primary beam losses and collision debris. Radiation tolerant integrated circuits are also being developed to allow the front-end electronics to sit much closer to the detector. Upgrades to other existing systems are also envisaged; including the beam position measurement system in the interaction regions and the addition of a halo measurement capability to synchrotron light diagnostics. Additionally, several new diagnostic systems are under investigation, such as very high bandwidth pick-ups and a streak camera installation, both able to perform intra-bunch measurements of transverse position on a turn by turn basis.
	Slides TUAC1 [4.490 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUAC1
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WEPMN049	Calibration of the Acceleration Voltage of Six Normal Conducting Cavities at ALBA	cavity, synchrotron, operation, coupling	3036
	B. Bravo, U. Iriso, J. Marcos, J.R. Ocampo, F. Pérez, A. Salom, P. Solans ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	ALBA is a 3Gev synchrotron light source located in Barcelona and operating with users since May 2012. The ALBA storage ring uses six room temperature cavities; each one fed by two 80kW IOTs amplifiers at 499.654 MHz. An accurate calibration of the RF voltage is required for the right adjustment of the beam synchronous phase. In addition, if the ring accommodates several RF cavities, these may not be optimally phased with respect to each other, complicating the calculation of the total RF voltage. In this paper, the steps to calibrate the accelerating voltage of the SR cavities will be presented and different methodologies to cross-check these calibrations.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPMN049
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WEPTY030	Breakdown Characterization in 805 MHz Pillbox-like Cavity in Strong Magnetic Fields	cavity, site, electron, vacuum	3335
	A.V. Kochemirovskiy, D.L. Bowring, A. Moretti, D.W. Peterson, K. Yonehara Fermilab, Batavia, Illinois, USA M. Chung UNIST, Ulsan, Republic of Korea G. Flanagan, G.M. Kazakevich Muons, Inc, Illinois, USA B.T. Freemire IIT, Chicago, Illinois, USA A.V. Kochemirovskiy University of Chicago, Chicago, Illinois, USA Y. Torun Illinois Institute of Technology, Chicago, Illlinois, USA
	RF Breakdown in strong magnetic fields has a negative impact on a cavity performance. The MuCool Test Area at Fermilab has unique capabilities that that allow us to study the effects of static magnetic field on RF cavity operation. We have tested an 805 MHz pillbox-like cavity in external magnetic fields up to 5T. Results confirm our basic model of breakdown in strong magnetic fields. We have measured maximum achievable surface gradient dependence on external static magnetic field. Damage inspection of cavity walls revealed a unique observed breakdown pattern. We present the analysis of breakdown damage distribution and propose the hypothesis to explain certain features of this distribution
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPTY030
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WEPWI005	Novel Approach to Variable Voltage Substation Protection	operation, controls, monitoring, simulation	3496
	M.Y. Mehtabuddin, C. Jach, S. Olek SLAC, Menlo Park, California, USA
	Conventional electrical system protection of variable voltage substations(medium voltage rated) of using fuses and phase overcurrent and/or phase time overcurrent protection is not adequate. This was evident from the recent variable voltage substation (VVS) electrical fire at SLAC. Using information obtained from the fire investigation, ETAP simulations, and event reports of the faults which led to the fire, SLAC put into action a fast, feasible, and economical relay protection plan into adequately protecting VVS until long term plan of replacements is implemented. The plan utilizes the existing microprocessor protection relays on the upstream vacuum breakers and included the following adjustments: Adjusting the long time overcurrent according to the de-rated cable ampacities, dual-fed arc flash fault protection, adding negative sequence settings and relay control logic to allow for two sets of settings for inrush mode and normal mode.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPWI005
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THPF077	Proposal for a 72.75 MHz RFQ for the LINCE Accelerator Complex	rfq, cavity, simulation, Windows	3861
	A.K. Orduz, A. Berjillos, C. Bonțoiu, J.A. Dueñas, I. Martel University of Huelva, Huelva, Spain A. Garbayo AVS, Elgoibar, Spain
	Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA The low-energy part of the LINCE facility can be based on a 72.75MHz normal-conducting RFQ designed to give a 450 keV/u boost for A/Q=7 ions in about 5m length. The vanes have been electromagnetically designed to accommodate dedicated RF windows producing effective separation of the RFQ modes in an octagonal-shaped resonance chamber. This article outlines the optimization of the quality factor of the cavity by using numerical methods for electromagnetic calculations. Experimental results of RF test carried out on a prototype are also discussed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF077
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Paper

Title

Other Keywords

Page

MOPHA008

Investigation of Beam Halo Using In Vacuum Diamond Sensor at ATF2

electron, vacuum, controls, laser

791

S. Liu, P. Bambade, F. Bogard, P. Cornebise, V. Kubytskyi, C. Sylvia
LAL, Orsay, France
A. Faus-Golfe, N. Fuster-Martínez
IFIC, Valencia, Spain
T. Tauchi, N. Terunuma
KEK, Ibaraki, Japan
T. Tauchi, N. Terunuma
Sokendai, Ibaraki, Japan

Funding: Chinese Scholarship Council, CNRS and P2IO LABEX
Beam halo transverse distribution measurements are of great importance for the understanding of background sources of the nano-meter beam size monitor at the interaction point (IPBSM) of ATF2. One of the most critical issues for the beam halo measurement is to reach high dynamic range. Two in vacuum diamond sensor beam halo scanners (DSv) with four strips each have been developed for the investigation of beam halo transverse distributions at ATF2. The first DSv was installed for horizontal beam halo scanning after the interaction point (IP) of ATF2, in Nov. 2014. It aims to measure the beam halo distribution with large dynamic range (~10⁶), and investigate the possibility of probing the Compton recoil electrons produced in the interaction with the IPBSM laser beams. Studies to characterize the DS performance and measurements of horizontal beam halo performed in Nov.-Dec. 2014 are presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPHA008

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MOPTY004

Wakefield Monitor Experiments with X-Band Accelerating Structures

wakefield, linac, hardware, dipole

947

R.L. Lillestøl, E. Adli, J. Pfingstner
University of Oslo, Oslo, Norway
R. Corsini, S. Döbert, W. Farabolini, L. Malina, W. Wuensch
CERN, Geneva, Switzerland

The accelerating structures for CLIC must be aligned with a precision of a few um with respect to the beam trajectory in order to mitigate emittance growth due to transverse wake fields. We report on first results from wake field monitor tests in an X-band structure, with a probe beam at the CLIC Test Facility. The monitors are currently installed in the CLIC Two-Beam Module. In order to fully demonstrate the feasibility of using wakefield monitors for CLIC, the precision of the monitors must be verified using a probe beam while simultaneously filling the structure with high power rf used to drive the accelerating mode. We outline plans to perform such a demonstration in the CLIC Test Facility.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPTY004

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MOPTY019

Precise Position Measurement by Analyzing the Correlation Between Electrodes of a Single Bpm

simulation, hardware, synchrotron, impedance

975

Z.C. Chen
SSRF, Shanghai, People's Republic of China
L.W. Lai, Y.B. Leng, Y.B. Yan
SINAP, Shanghai, People's Republic of China

Beam position is one of the most important parameters in a particle accelerator. The more accurate and precise the measurement system is, the more features of the beam dynamics could be revealed. A method called model-independent analysis (MIA) takes advantage of multiple beam position monitors (BPM) on the storage ring to obtain the actual beam positions by removing the random noise of each BPM. Inspired by MIA, the original voltage waveforms obtained from the electrodes of a single BPM can also be decomposed to get the beam position information. This article discusses the results of the experiments and the evaluation of the performance of the BPM at the Shanghai Institute of Applied Physics.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPTY019

Export •

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

MOPTY039

Compact Single Pass BPM

software, controls, FPGA, instrumentation

1013

M. Žnidarčič, M. Cargnelutti, E. Janezic
I-Tech, Solkan, Slovenia

Monitoring and subsequent optimization of linacs and beam transfers requires specific instrumentation for beam position data acquisition and processing. Compact single pass BPM is the newly developed prototype intended for position and charge monitoring in classical single-multi bunch operation linacs and transfer lines. Flexibility of the instrument enables the installation on electron and proton single pass machines. The motivation, processing principles and first results are presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPTY039

Export •

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

MOPTY056

Elena Orbit and Schottky Measurement Systems

FPGA, antiproton, hardware, diagnostics

1061

L. Søby, M.E. Angoletta, R. Marco-Hernandez, J.C. Molendijk, F. Pedersen, J. Sanchez-Quesada
CERN, Geneva, Switzerland
M. Bau
University of Brescia, Brescia, Italy
M. Ferrari, V. Ferrari
Università di Brescia, Brescia, Italy

A new Extra Low ENergy Antiproton ring (ELENA) is under construction at CERN to further decelerate the antiprotons from the existing Antiproton Decelerator (AD) to an energy of just 100 keV. This contribution will describe the beam position system foreseen for ELENA and how it can be adapted for Schottky measurements. The orbit system being developed is based on electrostatic shoebox BPMs fitted with Digital Down Converters (DDC). The main requirement is to measure complete orbits every 20 ms with a resolution of 0.1mm for intensities in the range of 1-3x10⁷ charges. The pick-up signals will, after amplification with a low noise charge amplifier, be down-mixed to baseband for position computation. In order to provide the longitudinal Schottky diagnostics of un-bunched beams, the 20 BPM sum signals will, after time off flight corrections, be added digitally to give an expected S/N increase of 13 dB compared to using a single electrostatic pick-up.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPTY056

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

MOPWI037

Upgrade and Operation of the Demonstration 4 GS/Sec. Intra-Bunch Instability Control System for the SPS

feedback, kicker, controls, FPGA

1246

J.E. Dusatko, J.D. Fox, C.H. Rivetta, O. Turgut
SLAC, Menlo Park, California, USA
W. Höfle
CERN, Geneva, Switzerland

Funding: Work supported by the U.S. Department of Energy under contract # DE-AC02-76SF00515 and the US LHC Accelerator Research Program (LARP).
We present the expanded system implementation and operational experience details for the “Demo” technology platform commissioned at the SPS in January 2015. The system has been expanded during the LS1 shutdown with added features. The upgraded system has enhanced performance and more robust synchronization to the beam and accelerator timing system. Central to the new features are 1 GHz bandwidth kickers and RF amplifiers (including associated equalizers) which allow excitation and control of higher modes within the 2 ns bunch. We highlight the expanded features, and present their details.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPWI037

Export •

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

TUAC1

Beam Instrumentation and Diagnostics for High Luminosity LHC

synchrotron, radiation, diagnostics, collimation

1349

O.R. Jones, E. Bravin, B. Dehning, T. Lefèvre, H. Schmickler
CERN, Geneva, Switzerland

The extensive array of beam instrumentation with which the LHC is equipped, has played a major role in its commissioning, rapid intensity ramp-up and safe and reliable operation. High Luminosity LHC (HL-LHC) brings with it a number of new challenges in terms of instrumentation that will be discussed in this contribution. The beam loss system will need significant upgrades in order to be able to cope with the demands of HL-LHC, with cryogenic beam loss monitors under investigation for deployment in the new inner triplet magnets to distinguish between primary beam losses and collision debris. Radiation tolerant integrated circuits are also being developed to allow the front-end electronics to sit much closer to the detector. Upgrades to other existing systems are also envisaged; including the beam position measurement system in the interaction regions and the addition of a halo measurement capability to synchrotron light diagnostics. Additionally, several new diagnostic systems are under investigation, such as very high bandwidth pick-ups and a streak camera installation, both able to perform intra-bunch measurements of transverse position on a turn by turn basis.

Slides TUAC1 [4.490 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUAC1

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WEPMN049

Calibration of the Acceleration Voltage of Six Normal Conducting Cavities at ALBA

cavity, synchrotron, operation, coupling

3036

B. Bravo, U. Iriso, J. Marcos, J.R. Ocampo, F. Pérez, A. Salom, P. Solans
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

ALBA is a 3Gev synchrotron light source located in Barcelona and operating with users since May 2012. The ALBA storage ring uses six room temperature cavities; each one fed by two 80kW IOTs amplifiers at 499.654 MHz. An accurate calibration of the RF voltage is required for the right adjustment of the beam synchronous phase. In addition, if the ring accommodates several RF cavities, these may not be optimally phased with respect to each other, complicating the calculation of the total RF voltage. In this paper, the steps to calibrate the accelerating voltage of the SR cavities will be presented and different methodologies to cross-check these calibrations.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPMN049

Export •

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

WEPTY030

Breakdown Characterization in 805 MHz Pillbox-like Cavity in Strong Magnetic Fields

cavity, site, electron, vacuum

3335

A.V. Kochemirovskiy, D.L. Bowring, A. Moretti, D.W. Peterson, K. Yonehara
Fermilab, Batavia, Illinois, USA
M. Chung
UNIST, Ulsan, Republic of Korea
G. Flanagan, G.M. Kazakevich
Muons, Inc, Illinois, USA
B.T. Freemire
IIT, Chicago, Illinois, USA
A.V. Kochemirovskiy
University of Chicago, Chicago, Illinois, USA
Y. Torun
Illinois Institute of Technology, Chicago, Illlinois, USA

RF Breakdown in strong magnetic fields has a negative impact on a cavity performance. The MuCool Test Area at Fermilab has unique capabilities that that allow us to study the effects of static magnetic field on RF cavity operation. We have tested an 805 MHz pillbox-like cavity in external magnetic fields up to 5T. Results confirm our basic model of breakdown in strong magnetic fields. We have measured maximum achievable surface gradient dependence on external static magnetic field. Damage inspection of cavity walls revealed a unique observed breakdown pattern. We present the analysis of breakdown damage distribution and propose the hypothesis to explain certain features of this distribution

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPTY030

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

WEPWI005

Novel Approach to Variable Voltage Substation Protection

operation, controls, monitoring, simulation

3496

M.Y. Mehtabuddin, C. Jach, S. Olek
SLAC, Menlo Park, California, USA

Conventional electrical system protection of variable voltage substations(medium voltage rated) of using fuses and phase overcurrent and/or phase time overcurrent protection is not adequate. This was evident from the recent variable voltage substation (VVS) electrical fire at SLAC. Using information obtained from the fire investigation, ETAP simulations, and event reports of the faults which led to the fire, SLAC put into action a fast, feasible, and economical relay protection plan into adequately protecting VVS until long term plan of replacements is implemented. The plan utilizes the existing microprocessor protection relays on the upstream vacuum breakers and included the following adjustments: Adjusting the long time overcurrent according to the de-rated cable ampacities, dual-fed arc flash fault protection, adding negative sequence settings and relay control logic to allow for two sets of settings for inrush mode and normal mode.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPWI005

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

THPF077

Proposal for a 72.75 MHz RFQ for the LINCE Accelerator Complex

rfq, cavity, simulation, Windows

3861

A.K. Orduz, A. Berjillos, C. Bonțoiu, J.A. Dueñas, I. Martel
University of Huelva, Huelva, Spain
A. Garbayo
AVS, Elgoibar, Spain

Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA
The low-energy part of the LINCE facility can be based on a 72.75MHz normal-conducting RFQ designed to give a 450 keV/u boost for A/Q=7 ions in about 5m length. The vanes have been electromagnetically designed to accommodate dedicated RF windows producing effective separation of the RFQ modes in an octagonal-shaped resonance chamber. This article outlines the optimization of the quality factor of the cavity by using numerical methods for electromagnetic calculations. Experimental results of RF test carried out on a prototype are also discussed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF077

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