IPAC2016 - Classification: 07 Accelerator Technology / T33 Subsystems, Technology and Components, Other

Paper	Title	Page
WEPMR007	Electron Lens Construction for the Integrable Optics Test Accelerator at Fermilab	2271
	M.W. McGee, K. Carlson, L.E. Nobrega, G. Stancari, A. Valishev Fermilab, Batavia, Illinois, USA
	Funding: Operated by Fermi Research Alliance, LLC, under Contract No. DE-AC02- 07CH11359 with the U.S. Department of Energy. The Integrable Optics Test Accelerator (IOTA) is proposed for operation at Fermilab. The goal of IOTA is to create practical nonlinear accelerator focusing systems with a large frequency spread and stable particle motion. The IOTA is a 40 m circumference, 150 MeV (e-), 2.5 MeV (p⁺) diagnostic test ring. Construction of an electron lens for IOTA is necessary for both electron and proton operation. Components required for the Electron Lens design include; a 0.8 T conventional water-cooled main solenoid, and magnetic bending and focusing elements. The foundation of the design relies on repurposing the Fermilab Tevatron Electron Lens II (TELII) gun and collector under ultra-high vacuum (UHV) conditions.
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WEPMR008	Mechanical Stability Study for Integrable Optics Test Accelerator at Fermilab	2274
	M.W. McGee, R. Andrews, K. Carlson, J.R. Leibfritz, L.E. Nobrega, A. Valishev Fermilab, Batavia, Illinois, USA
	Funding: Operated by Fermi Research Alliance, LLC, under Contract No. DE-AC02- 07CH11359 with the U.S. Department of Energy. The Integrable Optics Test Accelerator (IOTA) is proposed for operation at Fermilab. The goal of IOTA is to create practical nonlinear accelerator focusing systems with a large frequency spread and stable particle motion. The IOTA is a 40 m circumference, 150 MeV (e-), 2.5 MeV (p⁺) diagnostic test ring. A heavy low frequency steel floor girder is proposed as the primary tier for IOTA device component support. Two design lengths; (8) 4 m and (2) 2.8 m long girders with identical cross section completely encompass the ring. This study focuses on the 4 m length girder and the development of a working prototype. Hydrostatic Level Sensor (HLS), temperature, metrology and fast motion measurements characterize the anticipated mechanical stability of the IOTA ring.
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WEPMR043	Analysis of Electrical Energy Consumption of Accelerator Reserach Facilities	2370
	J. Stadlmann GSI, Darmstadt, Germany D. Batorowicz, C. Fuhr, J. Hanson, S. Leis TUD, Darmstadt, Germany M. Seidel PSI, Villigen PSI, Switzerland
	Funding: The work is part of EuCARD-2, partly funded by the European Commission, GA 312453. Optimization of energy efficiency and utilization of renewable energy sources has become a major focus of political and social policies, leading to increasing energy cost not only in Germany but also in the European energy market. Simultaneously the energy demand of future accelerator projects is estimated to rise compared to existing facilities, leading to overall increased energy costs. Energy efficiency could counteract this trend by reducing energy consumption for a given research goal. This work aims to find recommendations for saving potential in existing research accelerators as well as guidelines for construction of future facilities. In order to identify and develop key figures for comparison between several international particle accelerator facilities, data has been collected by a questionnaire developed in cooperation between GSI and TUD, Darmstadt. We present the first results of it's evaluation.
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WEPMR044	Beam Induced Damage Studies of the IFMIF/EVEDA 125 mA CW 9 MeV D⁺ Linear Accelerator	2373
	F. Scantamburlo, J. Knaster, A. Marqueta IFMIF/EVEDA, Rokkasho, Japan P.-Y. Beauvais F4E, Germany B. Bolzon, H. Dzitko CEA/IRFU, Gif-sur-Yvette, France R. Ichimiya JAEA, Aomori, Japan H. Kobayashi KEK, Ibaraki, Japan
	IFMIF (International Fusion Material Irradiation Facility) will be a Li(d, xn) neutron source providing equivalent neutron spectrum of DT fusion reactions and comparable neutron flux of future commercial reactors. IFMIF, presently in its EVEDA (Engineering Validation and Engineering Design Activities) phase is installing LIPAc (Linear IFMIF Prototype Accelerator) in Rokkasho (Japan), a 125 mA CW 9 MeV deuteron beam as validating prototype of IFMIF accelerators. The MPS of LIPAc manages the interlocks for a fast beam stop during anomalous beam losses or other hazardous situations. High speed processing is essential to achieve MPS goals driven by investment protection principles. Since Bragg's peak depth is dependent of energy, power densities by uncontrolled beam losses can be very damaging at low energies; the MPS principles for LIPAc are validating those for IFMIF. Beam losses may lead to severe damages by excessive thermal stresses, annealing or even burn/melting of materials. Careful studies to set the maximum allowable time for a beam shutdown to prevent undesired scenarios during the accelerator operational life have been undertaken.
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WEPMR045	Engineering Issues of the Medium Energy Beam Transport Line and SRF Linac for the LIPAc	2377
	D. Gex, H. Dzitko, A. Lo Bue, G. Phillips, L. Semeraro, J.M. Zarzalejos F4E, Germany N. Bazin, G. Devanz, P. Hardy CEA/IRFU, Gif-sur-Yvette, France J. Castellanos, J.M. García, D. Jiménez-Rey, D. López, L.M. Martínez, I. Podadera CIEMAT, Madrid, Spain O. Nomen IREC, Sant Adria del Besos, Spain F. Scantamburlo IFMIF/EVEDA, Rokkasho, Japan
	The International Fusion Materials Irradiation Facility (IFMIF) aims to provide an accelerator-based, D-Li neutron source to produce high energy neutrons at sufficient intensity and irradiation volume for DEMO materials qualification. Part of the Broader Approach (BA) agreement between Japan and EURATOM, the goal of the IFMIF/EVEDA project is to work on the engineering design of IFMIF and to validate the main technological challenges which, among a wide diversity of hardware includes the LIPAC (Linear IFMIF Prototype Accelerator), a 125 mA CW deuteron accelerator up to 9 MeV mainly designed and manufactured in Europe. The aim of this paper is to address the engineering issues of the MEBT and SRF linac related to assembly and Integration at LIPAc facility, focusing in the seismic analysis of the beamlines to ensure the robustness of the equipment and the alignment activities with the cutting edge technology performed in Europe before sending the components to Rokkasho. These activities are essential before starting the installation process of the MEBT in the first half of 2016, and to initiate the assembly and integration of the SRF Linac cryomodule in the next phase.
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WEPMR046	Thermal Analysis of the Injection Beam Dump at J-PARC RCS	2380
	J. Kamiya, M. Kinsho, P.K. Saha, K. Yamamoto JAEA/J-PARC, Tokai-mura, Japan
	In the J-PARC accelerator facility, 400 MeV H⁻ ions are injected from linac to rapid cycling synchrotron (RCS). A thin graphite foil with the thickness of about 300 ug/cm² is located at the injection point to strip two electrons from H⁻ ion and convert it to proton. The charge stripping efficiency is usually more than 99.7 %. In other words, less than 0.3 % H⁻ ions are not accurately exchanged to protons. Most of those remaining H⁻ ions or H⁰ atoms (stripped only one electron from H⁻ ion) are eventually converted to protons by second and third graphite foils and transported to the beam dump. This beam dump consists of an iron block with the size of 0.3×0.3×0.4 m3 for beam stop and the iron block with the size of 3×3×2.5 m3 and concrete with the size of 6×6×6 m3 around the iron block for the radiation shielding. The radiation shielding was designed to endure the 4 kW proton beam to the beam dump. In this presentation, we show the thermal analysis of the beam dump and compare it to the real operation.
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WEPMR047	Overall Design of Magnet Girder System for Heps-Tf	2383
	H. Wang, L. Gong, C.H. Li, S. Li, H. Qu, Z. Wang, L. Wu IHEP, Beijing, People's Republic of China
	HEPS-TF is the test facility of HEPS (High Energy Pho-ton Source) of China. The magnet girders are used for supporting and positioning of the magnets. As the beam emittance is very low, the girder must has high adjusting precision and high stability. Besides, the girder should also be beam-based aligned. For these issues, two girder systems are designed. Both of them use cam mover mech-anisms for precision adjustment. One has six cam mover mechanisms and another has eight. The design aim of the alignment accuracy between girders is within 50 μm, and the adjusting resolution is within 3μm. The design aim of the natural frequency is above 30 Hz. This paper will discuss the scheme selection and structural design of the girder systems.
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WEPMR048	Hall Element Relative Position and Angle Calibrations for the Cryogenic Permanent Magnet Undulator	2386
SUPSS108	use link to see paper's listing under its alternate paper code
	L. Gong, W. Chen, W. Kang, L.Z. Li, H.H. Lu, Y.F. Yang IHEP, Beijing, People's Republic of China
	A three dimensions Hall probe will be manufactured for characterizing the magnetic performance of Cryogenic Permanent Magnet Undulator (CPMU) of Chinese High Energy Photon Source and the test facility (HEPS-TF) at Institute of High Energy Physics (IHEP). The positional and angular misalignment errors of the Hall sensors play an important role in the measurement accuracy of CPMU. In order to minimize the misalignment errors, a method of calibrating relative displacements and assembly angles of a 3-D Hall probe is carried out. In this paper, details of the calibration procedures and the data processing are presented.
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WEPMR050	Development of Web-based User Interface for Beam Status Monitoring of 100-MeV Proton Linac	2389
	Y.G. Song, J.H. Kim KAERI, Gyeongbuk, Republic of Korea Y.-S. Cho, H.-J. Kwon Korea Atomic Energy Research Institute (KAERI), Gyeongbuk, Republic of Korea
	Funding: This work was supported by the Ministry of Science, ICT & Future Planning of the Korean Government. The goal of web-based user interface is to create a user interface which makes it easy and efficient to operate the KOMAC facility. A web-based user interface for a beam status monitoring of the KOMAC 100 MeV linac and beam lines has been developed with accessing Experimental Physics and Industrial Control System (EPICS) Channel Access (CA) protocol and relational database. Web service is combined with EPICS CA protocol. As a result, a beam operator and user can monitor the beam status in real time by using a web browser of remote PC or wireless device. In this paper, we are describing the implementation of web-based user interface for a beam status monitoring of the KOMAC proton linac.
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WEPMR052	Development of EPICS Control System for ODA Magnet Power Supplies and GigE CCD Camera	2392
	S.S. Cha, J.H. Ha, J.H. Kim, Y. Kim KAERI, Jeongeup-si, Republic of Korea P. Buaphad RTX, Daejeon, Republic of Korea S.D. Yang Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongup-si, Jeollabuk-do, Republic of Korea
	The Radiation Equipment Research Division of the Korea Atomic Energy Research Institute has been op-erating a 10 MeV RF electron linear accelerator, which is used for electron beam irradiation. The beam power and energy of the RF electron linear accelerator are 10 kW and 10 MeV. The accelerator is composed of an electron gun, an S-band (= 2856 MHz) accelerating structure, a klystron, electromagnetic solenoids, a scanning electromagnet, an RF driver, a modulator, and a chiller. The linac components have deteriorated due to a long operation time of 9 years. In this paper, we described Experimental Physics and Industrial Control System (EPICS) to control ODA magnet power sup-plies for solenoids and steering magnets of the 10 MeV electron beam irradiation accelerator.
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WEPMR053	Technical Overview of Cavity BPM Mover for PAL XFEL	2395
	H.-G. Lee, S.-H. Jeong, Y.-G. Jung, H.-S. Kang, D.E. Kim, K.W. Kim, S.B. Lee, D.H. Na, B.G. Oh, K.-H. Park, H.S. Suh, Y.J. Suh PAL, Pohang, Kyungbuk, Republic of Korea
	Pohang Accelerator Laboratory(PAL) has been developing a SASE X-ray Free Electron Laser based on 10 GeV linear accelerator. The cavity BPM mover was developed to be used in the intersections of the Undulator Systems. The main specifications include submicron repeatability for a 50 kg cavity BPM adjusting system within compact dimensions and a ±1.5 mm stroke in the vertical and horizontal direction. Compact linear motion guide based on 5-phase stepping motors have been chosen. A closed-loop control system has been developed to achieve this repeatability. For the feedback, one digital probe sensor for each axis was used. Mechanical switches are used to limit movement. In addition, hard-stops are included for emergency. In this report, we describe the design of the stages used for precise movement and results of mechanical measurements including reproducibility will be reported.
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WEPMR055	openSE: a Systems Engineering Framework Particularly Suited to Particle Accelerator Studies and Development Projects	2398
	P. Bonnal, B. Feral, K. Kershaw, B. Nicquevert CERN, Geneva, Switzerland M. Baudin ENS, Paris, France L. Lari ESS, Lund, Sweden J. Le Cardinal École Centrale/Supélec, Chatenay Malabry, France
	Particle accelerator projects share many characteristics with industrial projects. However, experience has shown that best practice of industrial project management is not always well suited to particle accelerator projects. Major differences include the number and complexity of technologies involved, the importance of collaborative work, development phases that can last more than a decade, and the importance of telerobotics and remote handling to address future preventive and corrective maintenance requirements due to induced radioactivity, to cite just a few. The openSE framework was developed as part of the PURESAFE ITN project funded by the European Commission; it is a systems engineering and project management framework specifically designed for scientific facilities' systems and equipment studies and development projects. Best practices in project management, in systems and requirements engineering, in telerobotics and remote handling and in radiation safety management were used as sources of inspiration, together with analysis of current practices surveyed at CERN, GSI and ESS.
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WEPMR056	Septum Magnet using a Superconducting Shield	2402
	D. Barna University of Tokyo, Tokyo, Japan F. Burkart CERN, Geneva, Switzerland
	A field-free region can be created within a dipole magnet using a superconducting shield, which maintains persistent eddy currents induced during the ramp-up of the magnet. We will study the possibility to realize a high-field superconducting septum magnet using this principle. Properties of different configurations will be presented, and compared to the requirements of the FCC dump system.
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WEPMR058	Survey and Alignment for Taiwan Photon Source Storage Ring	2405
	W.Y. Lai, M.L. Chen, H.C. Ho, K.H. Hsu, D.-G. Huang, C.K. Kuan, C.J. Lin, S.Y. Perng, C.W. Tsai, T.C. Tseng, H.S. Wang NSRRC, Hsinchu, Taiwan
	The Taiwan Photon Source (TPS) is a 3 Gev synchrotron light source located in Hsinchu, Taiwan. The commissioning of the beam began on December 2014, and the phase 1 stored current of 100mA was achieved on March 2015. Then the installation and alignment of insertion device were complete during the shutdown from April to July, and also the scheduled maintenance of survey control points was complete in the meantime. This report presents survey alignment results and experience of the TPS .
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WEPOR056	Development of a Cw Solid State Amplifier for the Longitudinal Feedback System of Bepcii	2796
	S. An, Z. Bowen PLAI, Nanjing, People's Republic of China J.L. Linling ADS, Jiangsu Province, People's Republic of China J.H. Yue IHEP, Beijing, People's Republic of China L. Zhang Chang'an University, Chang'an, People's Republic of China
	A Solid State Amplifier (SSA) has been developed for testing beam feedback system of the BEPCII of the Institute of High Energy Physics (IHEP), CAS. The output power of the SSA is 100 W with a CW frequency range from 1000 MHz to 1250 MHz. After three generations development, the SSA has become a professional power source. The paper has introduced the development of the SSA and the skills used in the SSA.
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FRXAB01	Pulsed Modulator Technology
	H. Matsumoto, M. Akemoto KEK, Ibaraki, Japan
	This talk provides a review of high voltage pulse modulators used for RF sources. Thanks to the innovation of high power semiconductor devices, various types of solid state switch devices and solid state modulators have been developed and realized. They improve the stability and reliability of the accelerator operation, and contribute downsizing and cost down for incoming new accelerators. This presentation addresses all relevant issues.
	Slides FRXAB01 [6.767 MB]
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Paper

Title

Page

Electron Lens Construction for the Integrable Optics Test Accelerator at Fermilab

2271

M.W. McGee, K. Carlson, L.E. Nobrega, G. Stancari, A. Valishev
Fermilab, Batavia, Illinois, USA

Funding: Operated by Fermi Research Alliance, LLC, under Contract No. DE-AC02- 07CH11359 with the U.S. Department of Energy.
The Integrable Optics Test Accelerator (IOTA) is proposed for operation at Fermilab. The goal of IOTA is to create practical nonlinear accelerator focusing systems with a large frequency spread and stable particle motion. The IOTA is a 40 m circumference, 150 MeV (e-), 2.5 MeV (p⁺) diagnostic test ring. Construction of an electron lens for IOTA is necessary for both electron and proton operation. Components required for the Electron Lens design include; a 0.8 T conventional water-cooled main solenoid, and magnetic bending and focusing elements. The foundation of the design relies on repurposing the Fermilab Tevatron Electron Lens II (TELII) gun and collector under ultra-high vacuum (UHV) conditions.

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WEPMR008

Mechanical Stability Study for Integrable Optics Test Accelerator at Fermilab

2274

M.W. McGee, R. Andrews, K. Carlson, J.R. Leibfritz, L.E. Nobrega, A. Valishev
Fermilab, Batavia, Illinois, USA

Funding: Operated by Fermi Research Alliance, LLC, under Contract No. DE-AC02- 07CH11359 with the U.S. Department of Energy.
The Integrable Optics Test Accelerator (IOTA) is proposed for operation at Fermilab. The goal of IOTA is to create practical nonlinear accelerator focusing systems with a large frequency spread and stable particle motion. The IOTA is a 40 m circumference, 150 MeV (e-), 2.5 MeV (p⁺) diagnostic test ring. A heavy low frequency steel floor girder is proposed as the primary tier for IOTA device component support. Two design lengths; (8) 4 m and (2) 2.8 m long girders with identical cross section completely encompass the ring. This study focuses on the 4 m length girder and the development of a working prototype. Hydrostatic Level Sensor (HLS), temperature, metrology and fast motion measurements characterize the anticipated mechanical stability of the IOTA ring.

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WEPMR043

Analysis of Electrical Energy Consumption of Accelerator Reserach Facilities

2370

J. Stadlmann
GSI, Darmstadt, Germany
D. Batorowicz, C. Fuhr, J. Hanson, S. Leis
TUD, Darmstadt, Germany
M. Seidel
PSI, Villigen PSI, Switzerland

Funding: The work is part of EuCARD-2, partly funded by the European Commission, GA 312453.
Optimization of energy efficiency and utilization of renewable energy sources has become a major focus of political and social policies, leading to increasing energy cost not only in Germany but also in the European energy market. Simultaneously the energy demand of future accelerator projects is estimated to rise compared to existing facilities, leading to overall increased energy costs. Energy efficiency could counteract this trend by reducing energy consumption for a given research goal. This work aims to find recommendations for saving potential in existing research accelerators as well as guidelines for construction of future facilities. In order to identify and develop key figures for comparison between several international particle accelerator facilities, data has been collected by a questionnaire developed in cooperation between GSI and TUD, Darmstadt. We present the first results of it's evaluation.

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WEPMR044

Beam Induced Damage Studies of the IFMIF/EVEDA 125 mA CW 9 MeV D⁺ Linear Accelerator

2373

F. Scantamburlo, J. Knaster, A. Marqueta
IFMIF/EVEDA, Rokkasho, Japan
P.-Y. Beauvais
F4E, Germany
B. Bolzon, H. Dzitko
CEA/IRFU, Gif-sur-Yvette, France
R. Ichimiya
JAEA, Aomori, Japan
H. Kobayashi
KEK, Ibaraki, Japan

IFMIF (International Fusion Material Irradiation Facility) will be a Li(d, xn) neutron source providing equivalent neutron spectrum of DT fusion reactions and comparable neutron flux of future commercial reactors. IFMIF, presently in its EVEDA (Engineering Validation and Engineering Design Activities) phase is installing LIPAc (Linear IFMIF Prototype Accelerator) in Rokkasho (Japan), a 125 mA CW 9 MeV deuteron beam as validating prototype of IFMIF accelerators. The MPS of LIPAc manages the interlocks for a fast beam stop during anomalous beam losses or other hazardous situations. High speed processing is essential to achieve MPS goals driven by investment protection principles. Since Bragg's peak depth is dependent of energy, power densities by uncontrolled beam losses can be very damaging at low energies; the MPS principles for LIPAc are validating those for IFMIF. Beam losses may lead to severe damages by excessive thermal stresses, annealing or even burn/melting of materials. Careful studies to set the maximum allowable time for a beam shutdown to prevent undesired scenarios during the accelerator operational life have been undertaken.

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WEPMR045

Engineering Issues of the Medium Energy Beam Transport Line and SRF Linac for the LIPAc

2377

D. Gex, H. Dzitko, A. Lo Bue, G. Phillips, L. Semeraro, J.M. Zarzalejos
F4E, Germany
N. Bazin, G. Devanz, P. Hardy
CEA/IRFU, Gif-sur-Yvette, France
J. Castellanos, J.M. García, D. Jiménez-Rey, D. López, L.M. Martínez, I. Podadera
CIEMAT, Madrid, Spain
O. Nomen
IREC, Sant Adria del Besos, Spain
F. Scantamburlo
IFMIF/EVEDA, Rokkasho, Japan

The International Fusion Materials Irradiation Facility (IFMIF) aims to provide an accelerator-based, D-Li neutron source to produce high energy neutrons at sufficient intensity and irradiation volume for DEMO materials qualification. Part of the Broader Approach (BA) agreement between Japan and EURATOM, the goal of the IFMIF/EVEDA project is to work on the engineering design of IFMIF and to validate the main technological challenges which, among a wide diversity of hardware includes the LIPAC (Linear IFMIF Prototype Accelerator), a 125 mA CW deuteron accelerator up to 9 MeV mainly designed and manufactured in Europe. The aim of this paper is to address the engineering issues of the MEBT and SRF linac related to assembly and Integration at LIPAc facility, focusing in the seismic analysis of the beamlines to ensure the robustness of the equipment and the alignment activities with the cutting edge technology performed in Europe before sending the components to Rokkasho. These activities are essential before starting the installation process of the MEBT in the first half of 2016, and to initiate the assembly and integration of the SRF Linac cryomodule in the next phase.

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WEPMR046

Thermal Analysis of the Injection Beam Dump at J-PARC RCS

2380

J. Kamiya, M. Kinsho, P.K. Saha, K. Yamamoto
JAEA/J-PARC, Tokai-mura, Japan

In the J-PARC accelerator facility, 400 MeV H⁻ ions are injected from linac to rapid cycling synchrotron (RCS). A thin graphite foil with the thickness of about 300 ug/cm² is located at the injection point to strip two electrons from H⁻ ion and convert it to proton. The charge stripping efficiency is usually more than 99.7 %. In other words, less than 0.3 % H⁻ ions are not accurately exchanged to protons. Most of those remaining H⁻ ions or H⁰ atoms (stripped only one electron from H⁻ ion) are eventually converted to protons by second and third graphite foils and transported to the beam dump. This beam dump consists of an iron block with the size of 0.3×0.3×0.4 m3 for beam stop and the iron block with the size of 3×3×2.5 m3 and concrete with the size of 6×6×6 m3 around the iron block for the radiation shielding. The radiation shielding was designed to endure the 4 kW proton beam to the beam dump. In this presentation, we show the thermal analysis of the beam dump and compare it to the real operation.

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WEPMR047

Overall Design of Magnet Girder System for Heps-Tf

2383

H. Wang, L. Gong, C.H. Li, S. Li, H. Qu, Z. Wang, L. Wu
IHEP, Beijing, People's Republic of China

HEPS-TF is the test facility of HEPS (High Energy Pho-ton Source) of China. The magnet girders are used for supporting and positioning of the magnets. As the beam emittance is very low, the girder must has high adjusting precision and high stability. Besides, the girder should also be beam-based aligned. For these issues, two girder systems are designed. Both of them use cam mover mech-anisms for precision adjustment. One has six cam mover mechanisms and another has eight. The design aim of the alignment accuracy between girders is within 50 μm, and the adjusting resolution is within 3μm. The design aim of the natural frequency is above 30 Hz. This paper will discuss the scheme selection and structural design of the girder systems.

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WEPMR048

Hall Element Relative Position and Angle Calibrations for the Cryogenic Permanent Magnet Undulator

2386

SUPSS108

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

L. Gong, W. Chen, W. Kang, L.Z. Li, H.H. Lu, Y.F. Yang
IHEP, Beijing, People's Republic of China

A three dimensions Hall probe will be manufactured for characterizing the magnetic performance of Cryogenic Permanent Magnet Undulator (CPMU) of Chinese High Energy Photon Source and the test facility (HEPS-TF) at Institute of High Energy Physics (IHEP). The positional and angular misalignment errors of the Hall sensors play an important role in the measurement accuracy of CPMU. In order to minimize the misalignment errors, a method of calibrating relative displacements and assembly angles of a 3-D Hall probe is carried out. In this paper, details of the calibration procedures and the data processing are presented.

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WEPMR050

Development of Web-based User Interface for Beam Status Monitoring of 100-MeV Proton Linac

2389

Y.G. Song, J.H. Kim
KAERI, Gyeongbuk, Republic of Korea
Y.-S. Cho, H.-J. Kwon
Korea Atomic Energy Research Institute (KAERI), Gyeongbuk, Republic of Korea

Funding: This work was supported by the Ministry of Science, ICT & Future Planning of the Korean Government.
The goal of web-based user interface is to create a user interface which makes it easy and efficient to operate the KOMAC facility. A web-based user interface for a beam status monitoring of the KOMAC 100 MeV linac and beam lines has been developed with accessing Experimental Physics and Industrial Control System (EPICS) Channel Access (CA) protocol and relational database. Web service is combined with EPICS CA protocol. As a result, a beam operator and user can monitor the beam status in real time by using a web browser of remote PC or wireless device. In this paper, we are describing the implementation of web-based user interface for a beam status monitoring of the KOMAC proton linac.

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WEPMR052

Development of EPICS Control System for ODA Magnet Power Supplies and GigE CCD Camera

2392

S.S. Cha, J.H. Ha, J.H. Kim, Y. Kim
KAERI, Jeongeup-si, Republic of Korea
P. Buaphad
RTX, Daejeon, Republic of Korea
S.D. Yang
Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongup-si, Jeollabuk-do, Republic of Korea

The Radiation Equipment Research Division of the Korea Atomic Energy Research Institute has been op-erating a 10 MeV RF electron linear accelerator, which is used for electron beam irradiation. The beam power and energy of the RF electron linear accelerator are 10 kW and 10 MeV. The accelerator is composed of an electron gun, an S-band (= 2856 MHz) accelerating structure, a klystron, electromagnetic solenoids, a scanning electromagnet, an RF driver, a modulator, and a chiller. The linac components have deteriorated due to a long operation time of 9 years. In this paper, we described Experimental Physics and Industrial Control System (EPICS) to control ODA magnet power sup-plies for solenoids and steering magnets of the 10 MeV electron beam irradiation accelerator.

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WEPMR053

Technical Overview of Cavity BPM Mover for PAL XFEL

2395

H.-G. Lee, S.-H. Jeong, Y.-G. Jung, H.-S. Kang, D.E. Kim, K.W. Kim, S.B. Lee, D.H. Na, B.G. Oh, K.-H. Park, H.S. Suh, Y.J. Suh
PAL, Pohang, Kyungbuk, Republic of Korea

Pohang Accelerator Laboratory(PAL) has been developing a SASE X-ray Free Electron Laser based on 10 GeV linear accelerator. The cavity BPM mover was developed to be used in the intersections of the Undulator Systems. The main specifications include submicron repeatability for a 50 kg cavity BPM adjusting system within compact dimensions and a ±1.5 mm stroke in the vertical and horizontal direction. Compact linear motion guide based on 5-phase stepping motors have been chosen. A closed-loop control system has been developed to achieve this repeatability. For the feedback, one digital probe sensor for each axis was used. Mechanical switches are used to limit movement. In addition, hard-stops are included for emergency. In this report, we describe the design of the stages used for precise movement and results of mechanical measurements including reproducibility will be reported.

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WEPMR055

openSE: a Systems Engineering Framework Particularly Suited to Particle Accelerator Studies and Development Projects

2398

P. Bonnal, B. Feral, K. Kershaw, B. Nicquevert
CERN, Geneva, Switzerland
M. Baudin
ENS, Paris, France
L. Lari
ESS, Lund, Sweden
J. Le Cardinal
École Centrale/Supélec, Chatenay Malabry, France

Particle accelerator projects share many characteristics with industrial projects. However, experience has shown that best practice of industrial project management is not always well suited to particle accelerator projects. Major differences include the number and complexity of technologies involved, the importance of collaborative work, development phases that can last more than a decade, and the importance of telerobotics and remote handling to address future preventive and corrective maintenance requirements due to induced radioactivity, to cite just a few. The openSE framework was developed as part of the PURESAFE ITN project funded by the European Commission; it is a systems engineering and project management framework specifically designed for scientific facilities' systems and equipment studies and development projects. Best practices in project management, in systems and requirements engineering, in telerobotics and remote handling and in radiation safety management were used as sources of inspiration, together with analysis of current practices surveyed at CERN, GSI and ESS.

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WEPMR056

Septum Magnet using a Superconducting Shield

2402

D. Barna
University of Tokyo, Tokyo, Japan
F. Burkart
CERN, Geneva, Switzerland

A field-free region can be created within a dipole magnet using a superconducting shield, which maintains persistent eddy currents induced during the ramp-up of the magnet. We will study the possibility to realize a high-field superconducting septum magnet using this principle. Properties of different configurations will be presented, and compared to the requirements of the FCC dump system.

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WEPMR058

Survey and Alignment for Taiwan Photon Source Storage Ring

2405

W.Y. Lai, M.L. Chen, H.C. Ho, K.H. Hsu, D.-G. Huang, C.K. Kuan, C.J. Lin, S.Y. Perng, C.W. Tsai, T.C. Tseng, H.S. Wang
NSRRC, Hsinchu, Taiwan

The Taiwan Photon Source (TPS) is a 3 Gev synchrotron light source located in Hsinchu, Taiwan. The commissioning of the beam began on December 2014, and the phase 1 stored current of 100mA was achieved on March 2015. Then the installation and alignment of insertion device were complete during the shutdown from April to July, and also the scheduled maintenance of survey control points was complete in the meantime. This report presents survey alignment results and experience of the TPS .

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WEPOR056

Development of a Cw Solid State Amplifier for the Longitudinal Feedback System of Bepcii

2796

S. An, Z. Bowen
PLAI, Nanjing, People's Republic of China
J.L. Linling
ADS, Jiangsu Province, People's Republic of China
J.H. Yue
IHEP, Beijing, People's Republic of China
L. Zhang
Chang'an University, Chang'an, People's Republic of China

A Solid State Amplifier (SSA) has been developed for testing beam feedback system of the BEPCII of the Institute of High Energy Physics (IHEP), CAS. The output power of the SSA is 100 W with a CW frequency range from 1000 MHz to 1250 MHz. After three generations development, the SSA has become a professional power source. The paper has introduced the development of the SSA and the skills used in the SSA.

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FRXAB01

Pulsed Modulator Technology

H. Matsumoto, M. Akemoto
KEK, Ibaraki, Japan

This talk provides a review of high voltage pulse modulators used for RF sources. Thanks to the innovation of high power semiconductor devices, various types of solid state switch devices and solid state modulators have been developed and realized. They improve the stability and reliability of the accelerator operation, and contribute downsizing and cost down for incoming new accelerators. This presentation addresses all relevant issues.

Slides FRXAB01 [6.767 MB]

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