IBIC2012 - List of Keywords (neutron)

Paper	Title	Other Keywords	Page
MOPB50	Design and Operation of the High Intensity Luminosity Monitors of the LHC	detector, luminosity, simulation, operation	179
	H.S. Matis, S.C. Hedges, M. Placidi, A. Ratti, W.C. Turner LBNL, Berkeley, California, USA E. Bravin CERN, Geneva, Switzerland R. Miyamoto ESS, Lund, Sweden
	Funding: We acknowledge the US-LARP program that is sponsoring this work and NERSC, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. We have built a high-pressure ionization chamber (BRAN) for the IP1 (ATLAS) and IP5 (CMS) regions of the LHC. This chamber is designed to measure the relative bunch-by-bunch collision rate of the LHC from 10²⁸ cm^-2s⁻¹ during beam commissioning all the way up to the expected full luminosity of 10³⁴ cm^-2s⁻¹ at 7.0 TeV. These high-pressure ionization chambers measure the intensity of hadronic/electromagnetic showers produced by the forward neutral particles of LHC collisions. They are designed to withstand the high radiation produced by these forward collisions and are currently used in LHC operations. This paper covers the detector's design and performance in measuring both pp and PbPb collisions during LHC operation, including a comparison with the ATLAS and CMS luminosity measurements. The work also includes modeling of the detectors and the ability to predict how the detector will respond to the higher energy and intensity operation of the LHC with different operating modes involving both ions and protons.

MOPB68	Development of Profile Monitor System for High Intense Spallation Neutron Source	target, proton, radiation, remote-handling	227
	S.I. Meigo, A. Akutsu, M. Futakawa, K. Ikezaki, M. Ooi, S. Sakamoto JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
	At the JSNS in J-PARC, a mercury target is employed as the neutron production target. It is well known that the damage on the mercury target is promotional to the 4th power of the peak current density of the primary proton beam on the target. For the high intense neutron source, the profile on the target is important to drive the neutron source with the continuously observation of the profile. We have developed to Multi Wire Profile Monitor System (MWPM). During beam operation, when the abnormally of the beam is found, the beam is cut out by the Machine Protection System (MPS). For the measurement of the two dimension observation on the target, we have developed the system based on the residual radiation measurement by using an imaging plate (IP), It is found that the both result by the MWPM and IP shows good agreement.

WECC01	IFMIF-LIPAc Diagnostics and its Challenges	diagnostics, rfq, linac, radiation	557
	J. Marroncle, P. Abbon, J.F. Denis, J. Egberts, J.-F. Gournay, F. Jeanneau, A. Marchix, J.-Ph. Mols, T. Papaevangelou CEA/IRFU, Gif-sur-Yvette, France J.C. Calvo, J.M. Carmona, P. Fernández, A. Guirao, D. Iglesias, C. Oliver, I. Podadera, A. Soleto CIEMAT, Madrid, Spain M. Poggi INFN/LNL, Legnaro (PD), Italy M. Pomorski CEA/DRT/LIST, Gif-sur-Yvette Cedex, France
	The International Fusion Materials Irradiation Facility (IFMIF) aims at providing a very intense neutron source (10¹⁷ neutron/s) to test the structure materials for the future fusion reactors, beyond ITER (International Thermonuclear Experimental Reactor). Such a source will be driven using 2 deuteron accelerators 125 mA cw up to 40 MeV impinging into a lithium liquid curtain, thus producing very high neutron flux with a similar spectrum as those expected in fusion reactors. A validation phase was decided for this 10 MW facility consisting partly in the design of the prototype accelerator LIPAc (Linear IFMIF Prototype Accelerator). LIPAc, which is in design phase, will accelerate a 125 mA cw beam deuteron up to the first superconductive linac module (4 for IFMIF). The 9 MeV beam will be driven through a HEBT to beam dump. This facility is currently under construction at Rokkasho (Japan). We propose to describe the beam diagnostics foreseen for this 1.125 MW accelerator emphasizing the challenges encountered and the overcome solutions, if any.
	Slides WECC01 [14.988 MB]

Paper

Title

Other Keywords

Page

MOPB50

Design and Operation of the High Intensity Luminosity Monitors of the LHC

detector, luminosity, simulation, operation

179

H.S. Matis, S.C. Hedges, M. Placidi, A. Ratti, W.C. Turner
LBNL, Berkeley, California, USA
E. Bravin
CERN, Geneva, Switzerland
R. Miyamoto
ESS, Lund, Sweden

Funding: We acknowledge the US-LARP program that is sponsoring this work and NERSC, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
We have built a high-pressure ionization chamber (BRAN) for the IP1 (ATLAS) and IP5 (CMS) regions of the LHC. This chamber is designed to measure the relative bunch-by-bunch collision rate of the LHC from 10²⁸ cm^-2s⁻¹ during beam commissioning all the way up to the expected full luminosity of 10³⁴ cm^-2s⁻¹ at 7.0 TeV. These high-pressure ionization chambers measure the intensity of hadronic/electromagnetic showers produced by the forward neutral particles of LHC collisions. They are designed to withstand the high radiation produced by these forward collisions and are currently used in LHC operations. This paper covers the detector's design and performance in measuring both pp and PbPb collisions during LHC operation, including a comparison with the ATLAS and CMS luminosity measurements. The work also includes modeling of the detectors and the ability to predict how the detector will respond to the higher energy and intensity operation of the LHC with different operating modes involving both ions and protons.

MOPB68

Development of Profile Monitor System for High Intense Spallation Neutron Source

target, proton, radiation, remote-handling

227

S.I. Meigo, A. Akutsu, M. Futakawa, K. Ikezaki, M. Ooi, S. Sakamoto
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan

At the JSNS in J-PARC, a mercury target is employed as the neutron production target. It is well known that the damage on the mercury target is promotional to the 4th power of the peak current density of the primary proton beam on the target. For the high intense neutron source, the profile on the target is important to drive the neutron source with the continuously observation of the profile. We have developed to Multi Wire Profile Monitor System (MWPM). During beam operation, when the abnormally of the beam is found, the beam is cut out by the Machine Protection System (MPS). For the measurement of the two dimension observation on the target, we have developed the system based on the residual radiation measurement by using an imaging plate (IP), It is found that the both result by the MWPM and IP shows good agreement.

WECC01

IFMIF-LIPAc Diagnostics and its Challenges

diagnostics, rfq, linac, radiation

557

J. Marroncle, P. Abbon, J.F. Denis, J. Egberts, J.-F. Gournay, F. Jeanneau, A. Marchix, J.-Ph. Mols, T. Papaevangelou
CEA/IRFU, Gif-sur-Yvette, France
J.C. Calvo, J.M. Carmona, P. Fernández, A. Guirao, D. Iglesias, C. Oliver, I. Podadera, A. Soleto
CIEMAT, Madrid, Spain
M. Poggi
INFN/LNL, Legnaro (PD), Italy
M. Pomorski
CEA/DRT/LIST, Gif-sur-Yvette Cedex, France

The International Fusion Materials Irradiation Facility (IFMIF) aims at providing a very intense neutron source (10¹⁷ neutron/s) to test the structure materials for the future fusion reactors, beyond ITER (International Thermonuclear Experimental Reactor). Such a source will be driven using 2 deuteron accelerators 125 mA cw up to 40 MeV impinging into a lithium liquid curtain, thus producing very high neutron flux with a similar spectrum as those expected in fusion reactors. A validation phase was decided for this 10 MW facility consisting partly in the design of the prototype accelerator LIPAc (Linear IFMIF Prototype Accelerator). LIPAc, which is in design phase, will accelerate a 125 mA cw beam deuteron up to the first superconductive linac module (4 for IFMIF). The 9 MeV beam will be driven through a HEBT to beam dump. This facility is currently under construction at Rokkasho (Japan). We propose to describe the beam diagnostics foreseen for this 1.125 MW accelerator emphasizing the challenges encountered and the overcome solutions, if any.

Slides WECC01 [14.988 MB]