HB2016 - List of Keywords (radiation)

Paper	Title	Other Keywords	Page
MOPL016	Effects of Energy Deposition Models and Conductive Cooling on Wire Scanner Thermal Load, Analytical and Finite Element Analysis Approach	linac, simulation, operation, insertion	221
	B. Cheymol ESS, Lund, Sweden
	One of the main limitations of the wire scanner in high intensity linac is the inability of the wire to survive at high duty cycle. For the commissioning of such machines, duty cycle must be reduced to preserve interceptive devices. A good thermal model of the wire is needed to insure a safe operation of the wire scanner and set the limits of acceptable beam duty cycle. In this paper, we will discuss the influence of the energy deposition model and the efficiency of conductive cooling on the wire temperature, based on the ESS beam parameters.
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MOPL018	Scintillator Detectors for the ESS High Energy Wire Scanner	detector, simulation, photon, linac	232
	B. Cheymol ESS, Lund, Sweden
	In the ESS linac, during commissioning and restart phase, wire scanner will be used intensively to characterize the transverse beam profiles. At low energy, the mode of detection is based on Secondary Emission (SE), while at energies above 200 MeV, the primary mode of detection will be the measurement of the hadronic shower created in the thin wire. In this paper we will present the design and the output signal estimation of the shower detector, based on inorganic crystal and silicon photodetector.
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WEAM5X01	Beam-Dynamics Issues in the FCC	emittance, luminosity, hadron, collider	373
	F. Zimmermann, W. Bartmann, M. Benedikt, M.I. Besana, R. Bruce, O.S. Brüning, X. Buffat, F. Burkart, H. Burkhardt, S. Calatroni, F. Cerutti, S.D. Fartoukh, M. Fiascaris, C. Garion, B. Goddard, B.J. Holzer, W. Höfle, J.M. Jowett, R. Kersevan, R. Martin, L. Mether, A. Milanese, T. Pieloni, S. Redaelli, G. Rumolo, B. Salvant, M. Schaumann, D. Schulte, E.N. Shaposhnikova, L.S. Stoel, C. Tambasco, R. Tomás, D. Tommasini CERN, Geneva, Switzerland J.L. Abelleira, E. Cruz Alaniz, A. Seryi JAI, Oxford, United Kingdom R.B. Appleby UMAN, Manchester, United Kingdom P. Bambade, A. Faus-Golfe, J. Molson LAL, Orsay, France J. Barranco EPFL, Lausanne, Switzerland J.-L. Biarrotte, A. Lachaize IPN, Orsay, France O. Boine-Frankenheim, U. Niedermayer TEMF, TU Darmstadt, Darmstadt, Germany M. Boscolo, F. Collamati, A. Drago INFN/LNF, Frascati (Roma), Italy A. Chancé CEA, Gif-sur-Yvette, France B. Dalena, J. Payet CEA/IRFU, Gif-sur-Yvette, France J.D. Fox, G. Stupakov SLAC, Menlo Park, California, USA G. Guillermo Cantón CINVESTAV, Mérida, Mexico S. Khan, B. Riemann DELTA, Dortmund, Germany V. Kornilov GSI, Darmstadt, Germany T.M. Mitsuhashi, K. Ohmi KEK, Ibaraki, Japan
	Funding: European Commission under the Capacities 7th Framework Programme project EuCARD-2, grant agreement 312453, and the HORIZON 2020 project EuroCirCol, grant agreement 654305. Also by the German BMBF. The international Future Circular Collider (FCC) study is designing hadron, lepton and lepton-hadron colliders based on a new 100 km tunnel in the Geneva region. The main focus and ultimate goal of the study are high-luminosity proton-proton collisions at a centre-of-mass energy of 100 TeV, using 16 T Nb3Sn dipole magnets. Specific FCC beam dynamics issues are related to the large circumference, the high brightness - made available by radiation damping -, the small geometric emittance, unprecedented collision energy and luminosity, the huge amount of energy stored in the beam, large synchrotron radiation power, plus the injection scenarios. In addition to the FCC-hh proper, also a High-Energy LHC (HE-LHC) is being explored, using the FCC-hh magnet technology in the existing LHC tunnel, which can yield a centre-of-mass energy around 25 TeV.
	Slides WEAM5X01 [10.402 MB]
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THAM2Y01	Measurements of Beam Pulse Induced Mechanical Strain Inside the SNS* Target Module	target, simulation, experiment, proton	532
	W. Blokland, Y. Liu, B.W. Riemer, M. Wendel, D.E. Winder ORNL, Oak Ridge, Tennessee, USA M.J. Dayton ORNL RAD, Oak Ridge, Tennessee, USA
	Funding: * ORNL is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. Department of Energy. Because several of the SNS targets have had a shorter lifetime than desired, a new target has been instrumented with strain sensors to further our understanding of the proton beam’s mechanical impact. The high radiation and electrically noisy environment led us to pick multi-mode fiber optical strain sensors over other types of strain sensors. Special care was taken to minimize the impact of the sensors on the target’s lifetime. We also placed accelerometers outside the target to try correlating the outside measurements with the internal measurements. Remote manipulators performed the final part of the installation, as even residual radiation is too high for humans to come close to the target’s final location. The initial set of optical sensors on the first instrumented target lasted just long enough to give us measurements from different proton beam intensities. A second set of more rad-hard sensors, installed in the following target, lasted much longer, to give us considerably more data. We are developing our own rad-hard, single-mode fiber optic sensors. This paper describes the design, installation, data-acquisition system, the results of the strain sensors, and future plans.
	Slides THAM2Y01 [13.157 MB]
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THAM4Y01	New Arrangement of Collimators of J-PARC Main Ring	collimation, beam-losses, proton, operation	543
	M.J. Shirakata, S. Igarashi, K. Ishii, Y. Sato, J. Takano KEK, Ibaraki, Japan
	The beam collimation system of J-PARC main ring has been prepared in order to localize the beam loss into the specified area, especially during the injection period. At the first time, it was constructed as a scraper-catcher system in horizontal and vertical planes which consisted of one halo-scraper and two scattered protons catchers, whose the maximum beam loss capacity was designed to be 450W in the beam injection straight of the ring. In 2012, the scraper was replaced by two collimators with a movable L-type jaw for both planes. Two catchers remained at the same places, and they were used as collimators. This large change of design concept of main ring collimation system was required in order to increase the beam loss capacity more than 3kW. The system worked well but unexpected loss spots still remained in the following arc and straight sections. The four-axis collimator was developed with movable jaw in horizontal, vertical and skew configurations which has high cleaning efficiency. We have four four-axis collimators, two non-skew collimators, and one original catcher. The most effective arrangement of collimators was investigated in this report.
	Slides THAM4Y01 [2.426 MB]
Export •	reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

Effects of Energy Deposition Models and Conductive Cooling on Wire Scanner Thermal Load, Analytical and Finite Element Analysis Approach

linac, simulation, operation, insertion

221

B. Cheymol
ESS, Lund, Sweden

One of the main limitations of the wire scanner in high intensity linac is the inability of the wire to survive at high duty cycle. For the commissioning of such machines, duty cycle must be reduced to preserve interceptive devices. A good thermal model of the wire is needed to insure a safe operation of the wire scanner and set the limits of acceptable beam duty cycle. In this paper, we will discuss the influence of the energy deposition model and the efficiency of conductive cooling on the wire temperature, based on the ESS beam parameters.

Export •

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

MOPL018

Scintillator Detectors for the ESS High Energy Wire Scanner

detector, simulation, photon, linac

232

B. Cheymol
ESS, Lund, Sweden

In the ESS linac, during commissioning and restart phase, wire scanner will be used intensively to characterize the transverse beam profiles. At low energy, the mode of detection is based on Secondary Emission (SE), while at energies above 200 MeV, the primary mode of detection will be the measurement of the hadronic shower created in the thin wire. In this paper we will present the design and the output signal estimation of the shower detector, based on inorganic crystal and silicon photodetector.

Export •

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

WEAM5X01

Beam-Dynamics Issues in the FCC

emittance, luminosity, hadron, collider

373

F. Zimmermann, W. Bartmann, M. Benedikt, M.I. Besana, R. Bruce, O.S. Brüning, X. Buffat, F. Burkart, H. Burkhardt, S. Calatroni, F. Cerutti, S.D. Fartoukh, M. Fiascaris, C. Garion, B. Goddard, B.J. Holzer, W. Höfle, J.M. Jowett, R. Kersevan, R. Martin, L. Mether, A. Milanese, T. Pieloni, S. Redaelli, G. Rumolo, B. Salvant, M. Schaumann, D. Schulte, E.N. Shaposhnikova, L.S. Stoel, C. Tambasco, R. Tomás, D. Tommasini
CERN, Geneva, Switzerland
J.L. Abelleira, E. Cruz Alaniz, A. Seryi
JAI, Oxford, United Kingdom
R.B. Appleby
UMAN, Manchester, United Kingdom
P. Bambade, A. Faus-Golfe, J. Molson
LAL, Orsay, France
J. Barranco
EPFL, Lausanne, Switzerland
J.-L. Biarrotte, A. Lachaize
IPN, Orsay, France
O. Boine-Frankenheim, U. Niedermayer
TEMF, TU Darmstadt, Darmstadt, Germany
M. Boscolo, F. Collamati, A. Drago
INFN/LNF, Frascati (Roma), Italy
A. Chancé
CEA, Gif-sur-Yvette, France
B. Dalena, J. Payet
CEA/IRFU, Gif-sur-Yvette, France
J.D. Fox, G. Stupakov
SLAC, Menlo Park, California, USA
G. Guillermo Cantón
CINVESTAV, Mérida, Mexico
S. Khan, B. Riemann
DELTA, Dortmund, Germany
V. Kornilov
GSI, Darmstadt, Germany
T.M. Mitsuhashi, K. Ohmi
KEK, Ibaraki, Japan

Funding: European Commission under the Capacities 7th Framework Programme project EuCARD-2, grant agreement 312453, and the HORIZON 2020 project EuroCirCol, grant agreement 654305. Also by the German BMBF.
The international Future Circular Collider (FCC) study is designing hadron, lepton and lepton-hadron colliders based on a new 100 km tunnel in the Geneva region. The main focus and ultimate goal of the study are high-luminosity proton-proton collisions at a centre-of-mass energy of 100 TeV, using 16 T Nb3Sn dipole magnets. Specific FCC beam dynamics issues are related to the large circumference, the high brightness - made available by radiation damping -, the small geometric emittance, unprecedented collision energy and luminosity, the huge amount of energy stored in the beam, large synchrotron radiation power, plus the injection scenarios. In addition to the FCC-hh proper, also a High-Energy LHC (HE-LHC) is being explored, using the FCC-hh magnet technology in the existing LHC tunnel, which can yield a centre-of-mass energy around 25 TeV.

Slides WEAM5X01 [10.402 MB]

Export •

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

THAM2Y01

Measurements of Beam Pulse Induced Mechanical Strain Inside the SNS* Target Module

target, simulation, experiment, proton

532

W. Blokland, Y. Liu, B.W. Riemer, M. Wendel, D.E. Winder
ORNL, Oak Ridge, Tennessee, USA
M.J. Dayton
ORNL RAD, Oak Ridge, Tennessee, USA

Funding: * ORNL is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. Department of Energy.
Because several of the SNS targets have had a shorter lifetime than desired, a new target has been instrumented with strain sensors to further our understanding of the proton beam’s mechanical impact. The high radiation and electrically noisy environment led us to pick multi-mode fiber optical strain sensors over other types of strain sensors. Special care was taken to minimize the impact of the sensors on the target’s lifetime. We also placed accelerometers outside the target to try correlating the outside measurements with the internal measurements. Remote manipulators performed the final part of the installation, as even residual radiation is too high for humans to come close to the target’s final location. The initial set of optical sensors on the first instrumented target lasted just long enough to give us measurements from different proton beam intensities. A second set of more rad-hard sensors, installed in the following target, lasted much longer, to give us considerably more data. We are developing our own rad-hard, single-mode fiber optic sensors. This paper describes the design, installation, data-acquisition system, the results of the strain sensors, and future plans.

Slides THAM2Y01 [13.157 MB]

Export •

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

THAM4Y01

New Arrangement of Collimators of J-PARC Main Ring

collimation, beam-losses, proton, operation

543

M.J. Shirakata, S. Igarashi, K. Ishii, Y. Sato, J. Takano
KEK, Ibaraki, Japan

The beam collimation system of J-PARC main ring has been prepared in order to localize the beam loss into the specified area, especially during the injection period. At the first time, it was constructed as a scraper-catcher system in horizontal and vertical planes which consisted of one halo-scraper and two scattered protons catchers, whose the maximum beam loss capacity was designed to be 450W in the beam injection straight of the ring. In 2012, the scraper was replaced by two collimators with a movable L-type jaw for both planes. Two catchers remained at the same places, and they were used as collimators. This large change of design concept of main ring collimation system was required in order to increase the beam loss capacity more than 3kW. The system worked well but unexpected loss spots still remained in the following arc and straight sections. The four-axis collimator was developed with movable jaw in horizontal, vertical and skew configurations which has high cleaning efficiency. We have four four-axis collimators, two non-skew collimators, and one original catcher. The most effective arrangement of collimators was investigated in this report.

Slides THAM4Y01 [2.426 MB]

Export •

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