IPAC2015 - List of Keywords (dumping)

Paper	Title	Other Keywords	Page
TUAD2	Comparison between Measured and Computed Temperatures of the Internal High Energy Beam Dump in the CERN SPS	simulation, target, shielding, kicker	1373
	G.E. Steele, R. Folch, V. Kain, I.V. Leitao, R. Losito, C. Maglioni, F. Pasdeloup, A. Perillo-Marcone, F.M. Velotti CERN, Geneva, Switzerland
	The SPS high energy internal dump (TIDVG) is designed to receive beam dumps from 10².2 to 450 GeV. The absorbing core is composed of 2.5m graphite, followed by 1m of aluminium, then 0.5m of copper and finally 0.3m of tungsten, all of which is surrounded by a water cooled copper jacket. An inspection during Long Shutdown 1 revealed significant beam induced damage to the Al section of the dump block. Temperature sensors were installed to monitor the new dump replacing the damaged one. This paper summarises the correlation between the temperature measured as a function of the energy deposited and the same temperatures computed in a numerical model combining FLUKA and ANSYS simulations. The goal of this study is the assessment of the thermal contact quality between the beam absorbing blocks and the copper jacket, by analysing the cooling times observed from the measurements and from the thermo-mechanical simulations. This paper presents an improved method to estimate the efficiency and long term reliability of the cooling of this type of design, with the view of optimising the performance of future dump versions.
	Slides TUAD2 [5.768 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUAD2
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TUPTY052	New Method for Validation of Aperture Margins in the LHC Triplet	optics, kicker, vacuum, collimation	2140
	V. Chetvertkova, R. Schmidt, F.M. Velotti, D. Wollmann CERN, Geneva, Switzerland F.M. Velotti EPFL, Lausanne, Switzerland
	Funding: Work supported by COFUND grant PCOFUND-GA-2010-267194 Safety of LHC equipment including superconducting magnets depends not only on the proper functioning of the systems for machine protection, but also on the accurate adjustment of the protective devices such as collimators. In case of a failure of the extraction kicker magnets, which are part of the beam dumping system, it is important to ensure protection of the superconducting triplet magnets from missteered beam. The magnets are located to the right of Interaction Point 5 (IP5) and are protected by one set of collimators in the beam dumping insertion in IR6 and another set close to the triplet magnets. In this paper, a new method for verification of the correct collimator position with respect to the aperture is presented. It comprises the application of an extended orbit bump with identical trajectory as the beam trajectory after a deflection by the beam dump kickers. By further increasing the bump amplitude and successively moving in/out the collimators in the region of interest, the accurate positioning of the collimators can be validated. The effectiveness of the method for LHC IP5 and IP1 and both beams is discussed
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUPTY052
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TUPWI015	Experience on Serial Production of the Quadrupole Movers with Submicrometric Repeatability for the European XFEL*	controls, quadrupole, hardware, operation	2271
	J. Munilla, J. Calero, L. García-Tabarés, A. Guirao, J.L. Gutiérrez, T. Martínez, E. Molina Marinas, F. Toral, C. Vázquez CIEMAT, Madrid, Spain J.A. Gorrotxategi, M. Tarragual ZEHATZ, Mendaro, Spain B. Junkera, A. Urzainki DMP, Mendaro, Spain C. Martins, E. Ramiro, F. Ramiro RAMEM, Madrid, Spain
	Funding: This work is partially supported by the Spanish Ministry of Science and Innovation under SEI Resolution on 17-September-2009 and Project ref. AIC10-A-000524 CIEMAT is in charge of the design and manufacturing of the quadrupole movers with submicrometric repeatability for the XFEL. EU intersections. Prototyping of these precision devices was successful but manufacturing them in a serial production scheme (101 units) implies some changes at design, fabrication procedures and quality controls. This paper will present some of the main problems and solutions adopted to transform a prototype made at a research facility into a serial production at a conventional industrial company. Also, it describes the inspection and tests, the quality controls and reporting procedures. All the devices have been validated and recepted. This paper describes the adopted procedure and the performance of the serial units.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUPWI015
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THPF096	Origin of the Damage to the Internal High Energy Beam Dump in the CERN SPS	proton, simulation, vacuum, kicker	3927
	V. Kain, K. Cornelis, B. Goddard, M. Lamont, I.V. Leitao, R. Losito, C. Maglioni, M. Meddahi, F. Pasdeloup, G.E. Steele, F.M. Velotti CERN, Geneva, Switzerland
	The high energy beam dump in the SPS has to deal with beams from 10⁵ to 450 GeV/c and intensities of up to 4 ×10¹³ protons. An inspection during the last shutdown revealed significant damage to the Al section of the dump block. This paper summarizes the results of the analysis revealing the most likely cause of the damage to the beam dump. The implications for future SPS operation will also be briefly discussed, together with the short-term solution put in place.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF096
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

TUAD2

Comparison between Measured and Computed Temperatures of the Internal High Energy Beam Dump in the CERN SPS

simulation, target, shielding, kicker

1373

G.E. Steele, R. Folch, V. Kain, I.V. Leitao, R. Losito, C. Maglioni, F. Pasdeloup, A. Perillo-Marcone, F.M. Velotti
CERN, Geneva, Switzerland

The SPS high energy internal dump (TIDVG) is designed to receive beam dumps from 10².2 to 450 GeV. The absorbing core is composed of 2.5m graphite, followed by 1m of aluminium, then 0.5m of copper and finally 0.3m of tungsten, all of which is surrounded by a water cooled copper jacket. An inspection during Long Shutdown 1 revealed significant beam induced damage to the Al section of the dump block. Temperature sensors were installed to monitor the new dump replacing the damaged one. This paper summarises the correlation between the temperature measured as a function of the energy deposited and the same temperatures computed in a numerical model combining FLUKA and ANSYS simulations. The goal of this study is the assessment of the thermal contact quality between the beam absorbing blocks and the copper jacket, by analysing the cooling times observed from the measurements and from the thermo-mechanical simulations. This paper presents an improved method to estimate the efficiency and long term reliability of the cooling of this type of design, with the view of optimising the performance of future dump versions.

Slides TUAD2 [5.768 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUAD2

Export •

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

TUPTY052

New Method for Validation of Aperture Margins in the LHC Triplet

optics, kicker, vacuum, collimation

2140

V. Chetvertkova, R. Schmidt, F.M. Velotti, D. Wollmann
CERN, Geneva, Switzerland
F.M. Velotti
EPFL, Lausanne, Switzerland

Funding: Work supported by COFUND grant PCOFUND-GA-2010-267194
Safety of LHC equipment including superconducting magnets depends not only on the proper functioning of the systems for machine protection, but also on the accurate adjustment of the protective devices such as collimators. In case of a failure of the extraction kicker magnets, which are part of the beam dumping system, it is important to ensure protection of the superconducting triplet magnets from missteered beam. The magnets are located to the right of Interaction Point 5 (IP5) and are protected by one set of collimators in the beam dumping insertion in IR6 and another set close to the triplet magnets. In this paper, a new method for verification of the correct collimator position with respect to the aperture is presented. It comprises the application of an extended orbit bump with identical trajectory as the beam trajectory after a deflection by the beam dump kickers. By further increasing the bump amplitude and successively moving in/out the collimators in the region of interest, the accurate positioning of the collimators can be validated. The effectiveness of the method for LHC IP5 and IP1 and both beams is discussed

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUPTY052

Export •

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

TUPWI015

Experience on Serial Production of the Quadrupole Movers with Submicrometric Repeatability for the European XFEL*

controls, quadrupole, hardware, operation

2271

J. Munilla, J. Calero, L. García-Tabarés, A. Guirao, J.L. Gutiérrez, T. Martínez, E. Molina Marinas, F. Toral, C. Vázquez
CIEMAT, Madrid, Spain
J.A. Gorrotxategi, M. Tarragual
ZEHATZ, Mendaro, Spain
B. Junkera, A. Urzainki
DMP, Mendaro, Spain
C. Martins, E. Ramiro, F. Ramiro
RAMEM, Madrid, Spain

Funding: This work is partially supported by the Spanish Ministry of Science and Innovation under SEI Resolution on 17-September-2009 and Project ref. AIC10-A-000524
CIEMAT is in charge of the design and manufacturing of the quadrupole movers with submicrometric repeatability for the XFEL. EU intersections. Prototyping of these precision devices was successful but manufacturing them in a serial production scheme (101 units) implies some changes at design, fabrication procedures and quality controls. This paper will present some of the main problems and solutions adopted to transform a prototype made at a research facility into a serial production at a conventional industrial company. Also, it describes the inspection and tests, the quality controls and reporting procedures. All the devices have been validated and recepted. This paper describes the adopted procedure and the performance of the serial units.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUPWI015

Export •

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

THPF096

Origin of the Damage to the Internal High Energy Beam Dump in the CERN SPS

proton, simulation, vacuum, kicker

3927

V. Kain, K. Cornelis, B. Goddard, M. Lamont, I.V. Leitao, R. Losito, C. Maglioni, M. Meddahi, F. Pasdeloup, G.E. Steele, F.M. Velotti
CERN, Geneva, Switzerland

The high energy beam dump in the SPS has to deal with beams from 10⁵ to 450 GeV/c and intensities of up to 4 ×10¹³ protons. An inspection during the last shutdown revealed significant damage to the Al section of the dump block. This paper summarizes the results of the analysis revealing the most likely cause of the damage to the beam dump. The implications for future SPS operation will also be briefly discussed, together with the short-term solution put in place.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF096

Export •

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