IPAC2015 - List of Keywords (status)

Paper	Title	Other Keywords	Page
MOBB2	Fabrication of TESLA-shape 9-cell Cavities at KEK for Studies on Mass-Production in Collaboration with Industries	cavity, SRF, cryomodule, controls	31
	T. Saeki, H. Hayano KEK, Ibaraki, Japan
	The construction of the new Center-of-Innovation (COI) buiding started at KEK from 2014 for the studies of mass-production of Superconducting-RF accelerators in collaboration with industries. The COI buiding is sitting next to the existing KEK-STF building and will include various Superconducting-RF facilities like clean-room for cavity-string assembly, cryomodule-assembly facility, cryogenic system, vertical-test facility, cryomodule-test facility, input-coupler processing facility, cavity Electro-Polishing (EP) facility, and control-room/office-rooms in the dimension of 80 m x 30 m. The purpose of this new SRF facilities is to establish a close collaboration between SRF researchers and industries in order to prepare for the upcoming large-scale future SRF project, like ILC. This article reports the fabricaion of four TESLA-shape 9-cell cavities for the commisioning of these new facilities. Details of the fabrication of these four cavities will be presented.
	Slides MOBB2 [3.983 MB]
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MOPHA003	Status of ATF2 IP-BPM Project	cavity, feedback, electronics, operation	777
	O.R. Blanco-García, P. Bambade, F. Bogard, P. Cornebise, S. Wallon LAL, Orsay, France D.R. Bett, N. Blaskovic Kraljevic, T. Bromwich JAI, Oxford, United Kingdom P. Burrows, G.B. Christian, C. Perry Oxford University, Physics Department, Oxford, Oxon, United Kingdom Y. Honda, K. Kubo, S. Kuroda, T. Naito, T. Okugi, T.T. Tauchi, N. Terunuma KEK, Ibaraki, Japan S.W. Jang, E.-S. Kim KNU, Deagu, Republic of Korea
	The efforts during the second half of 2014 towards nano-metric beam position measurement and stabilization at the Interaction Point (IP) section of the Accelerator Test Facility (ATF) at KEK are presented. Recent improvements to the beam position monitor (BPM) data analysis and processing electronics, as well as the installation of a new set of C-Band BPMs, are reviewed.
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MOPTY020	An Intelligent Trigger Abnormal Beam Operation Monitoring Processor at the SSRF	monitoring, FPGA, operation, injection	978
	L.W. Lai, Z.C. Chen, Y.B. Leng, Y.B. Yan SSRF, Shanghai, People's Republic of China
	Funding: Work supported by National Nature Science Fundation of China(11305253)(11375255)(11105211) An intelligent trigger abnormal beam operation monitoring processor has been designed at the SSRF. By applying digital signal processing algorithms in FPGA, the processor keeps monitoring the beam operation status. It will output a trigger signal and store the turn-by-turn beam position data when abnormal events detected. The abnormal events include injection, beam loss, and abnormal disturbance. This ability makes the processor a powerful tool for abnormal operation causes analysing and machine study.
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MOPWI050	Open XAL Status Report 2015	site, database, framework, software	1270
	T.A. Pelaia II, C.K. Allen, A.P. Shishlo, A.P. Zhukov ORNL, Oak Ridge, Tennessee, USA Y.-C. Chao, C. Gong, F.W. Jones, R. Newhouse TRIUMF, Vancouver, Canada P. Chu, D.G. Maxwell, Y. Zhang FRIB, East Lansing, Michigan, USA R. Fearn, L. Fernández, E. Laface, M. Muñoz ESS, Lund, Sweden J.M. Freed University of South Carolina, Columbia, USA P. Gillette, P. Laurent, G. Normand GANIL, Caen, France H.R. Hale University of Tennessee, Knoxville, USA Y. Li IHEP, Beijing, People's Republic of China I. List, M. Pavleski Cosylab, Ljubljana, Slovenia P. Scruggs East Tennessee State University, Johnson City, USA
	Funding: ORNL/SNS is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725 Open XAL is an accelerator physics software platform developed in collaboration among several facilities around the world. The Open XAL collaboration was formed in 2010 to port, improve and extend the successful XAL platform used at the Spallation Neutron Source for use in the broader accelerator community and to establish it as the standard platform for accelerator physics software. The site-independent core is complete, active applications have been ported, and now we are in the process of verification and transitioning to using Open XAL in production. This paper will present the current status and a roadmap for this project.
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TUPHA005	Tools for NSLS II Commissioning	controls, operation, interface, injection	1971
	G.M. Wang, G. Bassi, A. Blednykh, W.X. Cheng, J. Choi, L.R. Dalesio, M.A. Davidsaver, J.H. De Long, K. Ha, Y. Hidaka, Y. Hu, Y. Li, D. Padrazo, S. Seletskiy, T.V. Shaftan, G. Shen, K. Shroff, O. Singh, T. Summers, Y. Tian, F.J. Willeke, H. Xu, L. Yang, X. Yang BNL, Upton, Long Island, New York, USA
	The National Synchrotron Light Source II (NSLS-II) is a state of the art 3 GeV third generation light source at Brookhaven National Laboratory. As many facilities worldwide, NSLS II uses the EPICS control system to monitor and control all accelerator hardware. Control system studio (CSS) is used for simple tasks such as monitoring, display, setting of PVs. browsing the historical data, et. al. For more complex accelerator physics applications, a collection of scripts are mainly written in Python and part from Matlab during commissioning. With the close collaboration and fully support from control group, more and more CSS features were developed for operation convenience and several high level applications are interfaced with users in CSS panels for daily use based on softiocs. This paper will present the tools that we have been using for commissioning.
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WEPWA019	Development of Accelerator-driven Compact Neutron Sources	neutron, target, proton, radiation	2535
	K. Hirota, G. Ichikawa, M. Kitaguchi, Y. Kiyanagi, H.M. Shimizu, K. Tsuchida, A. Uritani, K. Watanabe Nagoya University, Nagoya, Japan
	Neutron is a very good probe to investigate the inner structure of materials. The large neutron facilities like J-PARC MLF and SNS were constructed in this decade, and ESS facility are start to construct. These large facilities are very good tools to study in academic field. But the construction cost is increasing and it is hard to construct at many facilities. And also it is hard to get long beam time. One of the solution of these problems are constructing Compact Accelerator-driven Neutron Source (CANS). We will present the current situation of CANS and the status of the facility of Nagoya University.
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WEPMA019	Status of the Super-FRS Magnet Devlopment for Fair	dipole, quadrupole, cryogenics, octupole	2792
	H. Müller, E.S. Fischer, H. Leibrock, P. Schnizer, M. Winkler GSI, Darmstadt, Germany J.-E. Munoz-Garcia, L. Quettier CEA/IRFU, Gif-sur-Yvette, France L. Serio CERN, Geneva, Switzerland
	The Super FRS is a two-stage in flight separator to be built next to the site of GSI, Darmstadt, Germany as part of FAIR (Facility for Anti-proton and Ion Research). Its purpose is to create and separate rare isotope beams and to enable the mass measurement also for very short lived nuclei. Due to its three branches a wide variety of experiments can be carried out in frame of the NUSTAR collaboration. Due to the large acceptance needed, the magnets of the Super-FRS have to have a large aperture and therefore only a superconducting solution is feasible. A superferric design with superconducting coils was chosen in which the magnetic field is shaped by an iron yoke. We will present the actual design status of the dipole- and multipole magnets as well as the status of the development of the dedicated test facility at CERN.
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WEPMA047	MHI's Production Activities of Accelerator Components	network, coupling, LLRF, vacuum	2873
	N. Shigeoka, S. Miura MHI, Hiroshima, Japan
	Mitsubishi Heavy Industries (MHI) is manufacturing various types of accelerator components. Recent production activities, mainly in a field of a normal conducting RF, will be reported in this presentation.
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WEPHA004	Present Quality Assurance for the LHC Beam Vacuum System and its Future Improvement	vacuum, controls, operation, cryogenics	3103
	J. Sestak, V. Baglin, G. Bregliozzi, P. Chiggiato CERN, Geneva, Switzerland
	During the Long Shutdown 1 (LS1), the LHC beam vacuum system was upgraded to minimize dynamic vacuum effects like stimulated desorption and beam-induced electron multipacting. A quality assurance plan was mandatory due to the demanding vacuum performance and the limited access to the equipment during the following operation period. Laboratory assessment tests and underground interventions were performed following well-defined and approved procedures. All vacuum related activities were documented and written reports stored in dedicated databases. Quality controls were performed to find mechanical, cabling and equipment functionality non-conformities. Possible issues were identified, classified and tracked in a non-conformity database for future corrective actions. This contribution give an overview of the quality assurance policy followed during the LS1 and the non-conformities reported after quality control. Possible future improvements are also discussed.
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WEPHA033	Electrical Power SCADA System of Taiwan Photon Source	real-time, controls, operation, GUI	3185
	T.-S. Ueng, W.S. Chan, J.-C. Chang, Y.F. Chiu, K.C. Kuo, Y.-C. Lin NSRRC, Hsinchu, Taiwan
	The architecture of power SCADA system of TPS and its monitored real time data are described in this report. The on-line monitored and measured items include voltage/current, real power/reactive power, power factor, harmonic distortion, etc. These data are presented in trend charts. The electric energy, the power quality and the harmonic distortion obtained with the SCADA system are used to study the status of the power system, and also provide information for the future improvement.
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WEPHA042	Commissioning of the TPS Cooling System: Testing, Adjusting, Balancing and Numerical Simulation	controls, simulation, storage-ring, monitoring	3209
	Z.-D. Tsai, W.S. Chan, Y.C. Chang, C.S. Chen, Y.-C. Chung, C.W. Hsu, C.Y. Liu NSRRC, Hsinchu, Taiwan
	The civil construction and utility systems of the 3-GeV Taiwan Photon Source (TPS) at NSRRC are ready for machine commissioning in 2014. To achieve a highly precise control of temperature, the thermal load must be carefully controlled and balanced. On analysis of the characteristics between the water pipes and the balance valves, a specified control philosophy can effectively adjust the pressure load on the branch pipes to balance the water flow. With regard to the air flow, we use a damper, baffle plant or variable air-volume (VAV) box to balance the air flow of each diffuser. Here we discuss the mechanism through a numerical simulation of the hydrodynamics and verify the practical influences of the testing, adjusting and balancing (TAB) for de-ionized water and the heating, ventilation and air-conditioning (HVAC) system.
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WEPTY026	Design of a Compact Fatigue Tester for Testing Irradiated Materials	vacuum, operation, alignment, shielding	3321
	B.D. Hartsell, M.R. Campbell, P. Hurh Fermilab, Batavia, Illinois, USA M.D. Fitton STFC/RAL, Chilton, Didcot, Oxon, United Kingdom T. Ishida, T. Nakadaira KEK, Ibaraki, Japan
	A compact fatigue testing machine that can be easily inserted into a hot cell for characterization of irradiated materials is beneficial to help determine relative fatigue performance differences between new and irradiated material. Hot cell use has been carefully considered by limiting the size and weight of the machine, simplifying sample loading and test setup for operation via master-slave manipulator, and utilizing an efficient design to minimize maintenance. Funded from a US-Japan collaborative effort, the machine has been specifically designed to help characterize titanium material specimens. These specimens are flat cantilevered beams for initial studies, possibly utilizing samples irradiated at other sources of beam. The option to test spherically shaped samples cut from the T2K vacuum window is also available. The machine is able to test a sample to 10⁷ cycles in under a week, with options to count cycles and sense material failure. The design of this machine will be presented along with current status.
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WEPTY040	Quench Performance of the First Twin-aperture 11 T Dipole for LHC upgrades	dipole, magnet-design, collimation, detector	3361
	A.V. Zlobin, N. Andreev, G. Apollinari, E.Z. Barzi, G. Chlachidze, A. Nobrega, I. Novitski, S. Stoynev, D. Turrioni Fermilab, Batavia, Illinois, USA B. Auchmann, S. Izquierdo Bermudez, M. Karppinen, L. Rossi, F. Savary, D. Smekens CERN, Geneva, Switzerland
	Funding: *Work is supported by Fermi Research Alliance, LLC, under contract No. DE-AC02-07CH11359 with the U.S. Department of Energy and European Commission under FP7 project HiLumi LHC, GA no.284404 The LHC luminosity upgrade plan foresees installation of additional collimators in Dispersion Suppressor areas around point 7 and interaction regions 1, 2 and 5. The required space for these collimators could be provided by replacing some 15-m long 8.33 T NbTi LHC main dipoles (MB) with shorter 11 T Nb3Sn dipoles (MBH) compatible with the LHC lattice and main systems. FNAL and CERN magnet groups are developing a 5.5-m long twin-aperture dipole prototype with the nominal field of 11 T at the LHC nominal current of 11.85 kA suitable for installation in the LHC. Two of these magnets with a collimator in between will replace one MB dipole. The single-aperture 2-m long dipole demonstrator and two 1-m long dipole models have been assembled and tested at FNAL in 2012-2014. The 1 m long collared coils were then assembled into the first twin-aperture Nb3Sn demonstrator dipole and tested. This paper reports test results of the first twin-aperture Nb3Sn dipole model focusing on magnet training, ramp rate sensitivity and temperature dependence of the magnet quench current. The twin-aperture dipole quench performance is compared with the data for the single-aperture models.
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Paper

Title

Other Keywords

Page

MOBB2

Fabrication of TESLA-shape 9-cell Cavities at KEK for Studies on Mass-Production in Collaboration with Industries

cavity, SRF, cryomodule, controls

31

T. Saeki, H. Hayano
KEK, Ibaraki, Japan

The construction of the new Center-of-Innovation (COI) buiding started at KEK from 2014 for the studies of mass-production of Superconducting-RF accelerators in collaboration with industries. The COI buiding is sitting next to the existing KEK-STF building and will include various Superconducting-RF facilities like clean-room for cavity-string assembly, cryomodule-assembly facility, cryogenic system, vertical-test facility, cryomodule-test facility, input-coupler processing facility, cavity Electro-Polishing (EP) facility, and control-room/office-rooms in the dimension of 80 m x 30 m. The purpose of this new SRF facilities is to establish a close collaboration between SRF researchers and industries in order to prepare for the upcoming large-scale future SRF project, like ILC. This article reports the fabricaion of four TESLA-shape 9-cell cavities for the commisioning of these new facilities. Details of the fabrication of these four cavities will be presented.

Slides MOBB2 [3.983 MB]

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MOPHA003

Status of ATF2 IP-BPM Project

cavity, feedback, electronics, operation

777

O.R. Blanco-García, P. Bambade, F. Bogard, P. Cornebise, S. Wallon
LAL, Orsay, France
D.R. Bett, N. Blaskovic Kraljevic, T. Bromwich
JAI, Oxford, United Kingdom
P. Burrows, G.B. Christian, C. Perry
Oxford University, Physics Department, Oxford, Oxon, United Kingdom
Y. Honda, K. Kubo, S. Kuroda, T. Naito, T. Okugi, T.T. Tauchi, N. Terunuma
KEK, Ibaraki, Japan
S.W. Jang, E.-S. Kim
KNU, Deagu, Republic of Korea

The efforts during the second half of 2014 towards nano-metric beam position measurement and stabilization at the Interaction Point (IP) section of the Accelerator Test Facility (ATF) at KEK are presented. Recent improvements to the beam position monitor (BPM) data analysis and processing electronics, as well as the installation of a new set of C-Band BPMs, are reviewed.

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MOPTY020

An Intelligent Trigger Abnormal Beam Operation Monitoring Processor at the SSRF

monitoring, FPGA, operation, injection

978

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

Funding: Work supported by National Nature Science Fundation of China(11305253)(11375255)(11105211)
An intelligent trigger abnormal beam operation monitoring processor has been designed at the SSRF. By applying digital signal processing algorithms in FPGA, the processor keeps monitoring the beam operation status. It will output a trigger signal and store the turn-by-turn beam position data when abnormal events detected. The abnormal events include injection, beam loss, and abnormal disturbance. This ability makes the processor a powerful tool for abnormal operation causes analysing and machine study.

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MOPWI050

Open XAL Status Report 2015

site, database, framework, software

1270

T.A. Pelaia II, C.K. Allen, A.P. Shishlo, A.P. Zhukov
ORNL, Oak Ridge, Tennessee, USA
Y.-C. Chao, C. Gong, F.W. Jones, R. Newhouse
TRIUMF, Vancouver, Canada
P. Chu, D.G. Maxwell, Y. Zhang
FRIB, East Lansing, Michigan, USA
R. Fearn, L. Fernández, E. Laface, M. Muñoz
ESS, Lund, Sweden
J.M. Freed
University of South Carolina, Columbia, USA
P. Gillette, P. Laurent, G. Normand
GANIL, Caen, France
H.R. Hale
University of Tennessee, Knoxville, USA
Y. Li
IHEP, Beijing, People's Republic of China
I. List, M. Pavleski
Cosylab, Ljubljana, Slovenia
P. Scruggs
East Tennessee State University, Johnson City, USA

Funding: ORNL/SNS is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725
Open XAL is an accelerator physics software platform developed in collaboration among several facilities around the world. The Open XAL collaboration was formed in 2010 to port, improve and extend the successful XAL platform used at the Spallation Neutron Source for use in the broader accelerator community and to establish it as the standard platform for accelerator physics software. The site-independent core is complete, active applications have been ported, and now we are in the process of verification and transitioning to using Open XAL in production. This paper will present the current status and a roadmap for this project.

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TUPHA005

Tools for NSLS II Commissioning

controls, operation, interface, injection

1971

G.M. Wang, G. Bassi, A. Blednykh, W.X. Cheng, J. Choi, L.R. Dalesio, M.A. Davidsaver, J.H. De Long, K. Ha, Y. Hidaka, Y. Hu, Y. Li, D. Padrazo, S. Seletskiy, T.V. Shaftan, G. Shen, K. Shroff, O. Singh, T. Summers, Y. Tian, F.J. Willeke, H. Xu, L. Yang, X. Yang
BNL, Upton, Long Island, New York, USA

The National Synchrotron Light Source II (NSLS-II) is a state of the art 3 GeV third generation light source at Brookhaven National Laboratory. As many facilities worldwide, NSLS II uses the EPICS control system to monitor and control all accelerator hardware. Control system studio (CSS) is used for simple tasks such as monitoring, display, setting of PVs. browsing the historical data, et. al. For more complex accelerator physics applications, a collection of scripts are mainly written in Python and part from Matlab during commissioning. With the close collaboration and fully support from control group, more and more CSS features were developed for operation convenience and several high level applications are interfaced with users in CSS panels for daily use based on softiocs. This paper will present the tools that we have been using for commissioning.

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WEPWA019

Development of Accelerator-driven Compact Neutron Sources

neutron, target, proton, radiation

2535

K. Hirota, G. Ichikawa, M. Kitaguchi, Y. Kiyanagi, H.M. Shimizu, K. Tsuchida, A. Uritani, K. Watanabe
Nagoya University, Nagoya, Japan

Neutron is a very good probe to investigate the inner structure of materials. The large neutron facilities like J-PARC MLF and SNS were constructed in this decade, and ESS facility are start to construct. These large facilities are very good tools to study in academic field. But the construction cost is increasing and it is hard to construct at many facilities. And also it is hard to get long beam time. One of the solution of these problems are constructing Compact Accelerator-driven Neutron Source (CANS). We will present the current situation of CANS and the status of the facility of Nagoya University.

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WEPMA019

Status of the Super-FRS Magnet Devlopment for Fair

dipole, quadrupole, cryogenics, octupole

2792

H. Müller, E.S. Fischer, H. Leibrock, P. Schnizer, M. Winkler
GSI, Darmstadt, Germany
J.-E. Munoz-Garcia, L. Quettier
CEA/IRFU, Gif-sur-Yvette, France
L. Serio
CERN, Geneva, Switzerland

The Super FRS is a two-stage in flight separator to be built next to the site of GSI, Darmstadt, Germany as part of FAIR (Facility for Anti-proton and Ion Research). Its purpose is to create and separate rare isotope beams and to enable the mass measurement also for very short lived nuclei. Due to its three branches a wide variety of experiments can be carried out in frame of the NUSTAR collaboration. Due to the large acceptance needed, the magnets of the Super-FRS have to have a large aperture and therefore only a superconducting solution is feasible. A superferric design with superconducting coils was chosen in which the magnetic field is shaped by an iron yoke. We will present the actual design status of the dipole- and multipole magnets as well as the status of the development of the dedicated test facility at CERN.

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WEPMA047

MHI's Production Activities of Accelerator Components

network, coupling, LLRF, vacuum

2873

N. Shigeoka, S. Miura
MHI, Hiroshima, Japan

Mitsubishi Heavy Industries (MHI) is manufacturing various types of accelerator components. Recent production activities, mainly in a field of a normal conducting RF, will be reported in this presentation.

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WEPHA004

Present Quality Assurance for the LHC Beam Vacuum System and its Future Improvement

vacuum, controls, operation, cryogenics

3103

J. Sestak, V. Baglin, G. Bregliozzi, P. Chiggiato
CERN, Geneva, Switzerland

During the Long Shutdown 1 (LS1), the LHC beam vacuum system was upgraded to minimize dynamic vacuum effects like stimulated desorption and beam-induced electron multipacting. A quality assurance plan was mandatory due to the demanding vacuum performance and the limited access to the equipment during the following operation period. Laboratory assessment tests and underground interventions were performed following well-defined and approved procedures. All vacuum related activities were documented and written reports stored in dedicated databases. Quality controls were performed to find mechanical, cabling and equipment functionality non-conformities. Possible issues were identified, classified and tracked in a non-conformity database for future corrective actions. This contribution give an overview of the quality assurance policy followed during the LS1 and the non-conformities reported after quality control. Possible future improvements are also discussed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPHA004

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WEPHA033

Electrical Power SCADA System of Taiwan Photon Source

real-time, controls, operation, GUI

3185

T.-S. Ueng, W.S. Chan, J.-C. Chang, Y.F. Chiu, K.C. Kuo, Y.-C. Lin
NSRRC, Hsinchu, Taiwan

The architecture of power SCADA system of TPS and its monitored real time data are described in this report. The on-line monitored and measured items include voltage/current, real power/reactive power, power factor, harmonic distortion, etc. These data are presented in trend charts. The electric energy, the power quality and the harmonic distortion obtained with the SCADA system are used to study the status of the power system, and also provide information for the future improvement.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPHA033

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WEPHA042

Commissioning of the TPS Cooling System: Testing, Adjusting, Balancing and Numerical Simulation

controls, simulation, storage-ring, monitoring

3209

Z.-D. Tsai, W.S. Chan, Y.C. Chang, C.S. Chen, Y.-C. Chung, C.W. Hsu, C.Y. Liu
NSRRC, Hsinchu, Taiwan

The civil construction and utility systems of the 3-GeV Taiwan Photon Source (TPS) at NSRRC are ready for machine commissioning in 2014. To achieve a highly precise control of temperature, the thermal load must be carefully controlled and balanced. On analysis of the characteristics between the water pipes and the balance valves, a specified control philosophy can effectively adjust the pressure load on the branch pipes to balance the water flow. With regard to the air flow, we use a damper, baffle plant or variable air-volume (VAV) box to balance the air flow of each diffuser. Here we discuss the mechanism through a numerical simulation of the hydrodynamics and verify the practical influences of the testing, adjusting and balancing (TAB) for de-ionized water and the heating, ventilation and air-conditioning (HVAC) system.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPHA042

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WEPTY026

Design of a Compact Fatigue Tester for Testing Irradiated Materials

vacuum, operation, alignment, shielding

3321

B.D. Hartsell, M.R. Campbell, P. Hurh
Fermilab, Batavia, Illinois, USA
M.D. Fitton
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
T. Ishida, T. Nakadaira
KEK, Ibaraki, Japan

A compact fatigue testing machine that can be easily inserted into a hot cell for characterization of irradiated materials is beneficial to help determine relative fatigue performance differences between new and irradiated material. Hot cell use has been carefully considered by limiting the size and weight of the machine, simplifying sample loading and test setup for operation via master-slave manipulator, and utilizing an efficient design to minimize maintenance. Funded from a US-Japan collaborative effort, the machine has been specifically designed to help characterize titanium material specimens. These specimens are flat cantilevered beams for initial studies, possibly utilizing samples irradiated at other sources of beam. The option to test spherically shaped samples cut from the T2K vacuum window is also available. The machine is able to test a sample to 10⁷ cycles in under a week, with options to count cycles and sense material failure. The design of this machine will be presented along with current status.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPTY026

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WEPTY040

Quench Performance of the First Twin-aperture 11 T Dipole for LHC upgrades

dipole, magnet-design, collimation, detector

3361

A.V. Zlobin, N. Andreev, G. Apollinari, E.Z. Barzi, G. Chlachidze, A. Nobrega, I. Novitski, S. Stoynev, D. Turrioni
Fermilab, Batavia, Illinois, USA
B. Auchmann, S. Izquierdo Bermudez, M. Karppinen, L. Rossi, F. Savary, D. Smekens
CERN, Geneva, Switzerland

Funding: *Work is supported by Fermi Research Alliance, LLC, under contract No. DE-AC02-07CH11359 with the U.S. Department of Energy and European Commission under FP7 project HiLumi LHC, GA no.284404
The LHC luminosity upgrade plan foresees installation of additional collimators in Dispersion Suppressor areas around point 7 and interaction regions 1, 2 and 5. The required space for these collimators could be provided by replacing some 15-m long 8.33 T NbTi LHC main dipoles (MB) with shorter 11 T Nb3Sn dipoles (MBH) compatible with the LHC lattice and main systems. FNAL and CERN magnet groups are developing a 5.5-m long twin-aperture dipole prototype with the nominal field of 11 T at the LHC nominal current of 11.85 kA suitable for installation in the LHC. Two of these magnets with a collimator in between will replace one MB dipole. The single-aperture 2-m long dipole demonstrator and two 1-m long dipole models have been assembled and tested at FNAL in 2012-2014. The 1 m long collared coils were then assembled into the first twin-aperture Nb3Sn demonstrator dipole and tested. This paper reports test results of the first twin-aperture Nb3Sn dipole model focusing on magnet training, ramp rate sensitivity and temperature dependence of the magnet quench current. The twin-aperture dipole quench performance is compared with the data for the single-aperture models.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPTY040

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