HB2012 - List of Keywords (laser)

Paper	Title	Other Keywords	Page
MOP240	High Energy Tests of Advanced Materials for Beam Intercepting Devices at CERN HiRadMat Facility	simulation, vacuum, instrumentation, proton	136
	A. Bertarelli, R.W. Aßmann, E. Berthomé, V. Boccone, F. Carra, F. Cerutti, A. Dallocchio, P. Francon, L. Gentini, M. Guinchard, N. Mariani, A. Masi, P. Moyret, S. Redaelli, S.D.M. dos Santos CERN, Geneva, Switzerland L. Peroni, M. Scapin Politecnico di Torino, Torino, Italy
	Predicting by simulations the consequences of LHC particle beams hitting Collimators and other Beam Intercepting Devices (BID) is a fundamental issue for machine protection: this can be done by resorting to highly non-linear numerical tools (Hydrocodes). In order to produce accurate results, these codes require reliable material models that, at the extreme conditions generated by a beam impact, are either imprecise or nonexistent. To validate relevant constitutive models or, when unavailable, derive new ones, a comprehensive experimental test foreseeing intense particle beam impacts on six different materials, either already used for present BID or under development for future applications, is being prepared at CERN HiRadMat facility. Tests will be run at medium and high intensity using the SPS proton beam (440 GeV). Material characterization will be carried out mostly in real time relying on embarked instrumentation (strain gauges, microphones, temperature and pressure sensors) and on remote acquisition devices (Laser Doppler Vibrometer and High-Speed Camera). Detailed post-irradiation analyses are also foreseen after the cool down of the irradiated materials.

MOP254	Design of a Photo-detachment Emittance Instrument for FETS	dipole, emittance, diagnostics, simulation	192
	C. Gabor STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom G.E. Boorman, A. Bosco Royal Holloway, University of London, Surrey, United Kingdom A.P. Letchford STFC/RAL, Chilton, Didcot, Oxon, United Kingdom P. Savage Imperial College of Science and Technology, Department of Physics, London, United Kingdom
	Photo detachment is a possibility to diagnose non-destructively H⁻ ion beams. For emittance measurements, the produced neutrals are more suitable then the photo-detached electrons. Such a Photo-Detachment Emittance Measurement Instrument (PD-EMI) is planned for the Front End Test Stand (FETS) at Rutherford Appleton Laboratory (RAL/ UK). FETS comprises a Penning ion source of 60 mA beam current with up to 2 ms pulse length at 50pps, a Low Energy Beam Transport (LEBT), a four-vane RFQ with 3 MeV and a Medium Energy Beam Transport (MEBT) with a chopper system. The PD-EMI will be integrated at the end of the MEBT to commission the RFQ which is currently under construction. The introduction gives an overview some results reached so far and explains the conceptual design. Beam simulations show how to implement this to the MEBT being under construction. The remaining paper concentrates then on the hardware which is the dipole magnet, the laser and optics. The design and and engineering of the magnet chamber needs special attention to both satisfy beam transportation and diagnostics purpose. First measurements about the laser and its parameters will be presented.

TUO1A04	Plasma Traps for Space-charge Studies: Status and Perspectives	plasma, ion, resonance, quadrupole	235
	H. Okamoto, K. Fukushima, H. Higaki, K. Ito, K. Moriya, T. Okano, S. Yamaguchi HU/AdSM, Higashi-Hiroshima, Japan M. Endo Hiroshima University, Higashi-Hiroshima, Japan A. Mohri Kyoto University, Graduate School of Human and Environmental Studies, Kyoto, Japan
	Funding: Work supported in part by a Grant-in-Aid for Scientific Research, Japan Society for the Promotion of Science. The beam physics group of Hiroshima University has developed non-neutral plasma traps dedicated solely to a wide range of beam dynamics studies. Those unique experimental tools approximately reproduce, in the laboratory frame, a many-body Coulomb system that is physically equivalent to a charged-particle beam observed in the center-of-mass frame. We have designed and constructed two different types of traps that employ either a radio-frequency electric quadrupole field or an axial magnetic field for transverse particle confinement. The former type is commonly referred to as "linear Paul trap" and the latter as "Penning trap". At present, three Paul traps and one Penning trap are operational while a new Penning trap for beam halo experiments is under construction. Each of these compact experimental facilities consists of a trap, many power supplies, a vacuum system, a computer control system, etc., and is called "S-POD (Simulator for Particle Orbit Dynamics)". S-POD is particularly useful for fundamental studies of high-intensity and high-brightness hadron beams. We here report on recent experimental outputs from S-POD and also briefly describe some future plans.
	Slides TUO1A04 [7.790 MB]

Paper

Title

Other Keywords

Page

MOP240

High Energy Tests of Advanced Materials for Beam Intercepting Devices at CERN HiRadMat Facility

simulation, vacuum, instrumentation, proton

136

A. Bertarelli, R.W. Aßmann, E. Berthomé, V. Boccone, F. Carra, F. Cerutti, A. Dallocchio, P. Francon, L. Gentini, M. Guinchard, N. Mariani, A. Masi, P. Moyret, S. Redaelli, S.D.M. dos Santos
CERN, Geneva, Switzerland
L. Peroni, M. Scapin
Politecnico di Torino, Torino, Italy

Predicting by simulations the consequences of LHC particle beams hitting Collimators and other Beam Intercepting Devices (BID) is a fundamental issue for machine protection: this can be done by resorting to highly non-linear numerical tools (Hydrocodes). In order to produce accurate results, these codes require reliable material models that, at the extreme conditions generated by a beam impact, are either imprecise or nonexistent. To validate relevant constitutive models or, when unavailable, derive new ones, a comprehensive experimental test foreseeing intense particle beam impacts on six different materials, either already used for present BID or under development for future applications, is being prepared at CERN HiRadMat facility. Tests will be run at medium and high intensity using the SPS proton beam (440 GeV). Material characterization will be carried out mostly in real time relying on embarked instrumentation (strain gauges, microphones, temperature and pressure sensors) and on remote acquisition devices (Laser Doppler Vibrometer and High-Speed Camera). Detailed post-irradiation analyses are also foreseen after the cool down of the irradiated materials.

MOP254

Design of a Photo-detachment Emittance Instrument for FETS

dipole, emittance, diagnostics, simulation

192

C. Gabor
STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
G.E. Boorman, A. Bosco
Royal Holloway, University of London, Surrey, United Kingdom
A.P. Letchford
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
P. Savage
Imperial College of Science and Technology, Department of Physics, London, United Kingdom

Photo detachment is a possibility to diagnose non-destructively H⁻ ion beams. For emittance measurements, the produced neutrals are more suitable then the photo-detached electrons. Such a Photo-Detachment Emittance Measurement Instrument (PD-EMI) is planned for the Front End Test Stand (FETS) at Rutherford Appleton Laboratory (RAL/ UK). FETS comprises a Penning ion source of 60 mA beam current with up to 2 ms pulse length at 50pps, a Low Energy Beam Transport (LEBT), a four-vane RFQ with 3 MeV and a Medium Energy Beam Transport (MEBT) with a chopper system. The PD-EMI will be integrated at the end of the MEBT to commission the RFQ which is currently under construction. The introduction gives an overview some results reached so far and explains the conceptual design. Beam simulations show how to implement this to the MEBT being under construction. The remaining paper concentrates then on the hardware which is the dipole magnet, the laser and optics. The design and and engineering of the magnet chamber needs special attention to both satisfy beam transportation and diagnostics purpose. First measurements about the laser and its parameters will be presented.

TUO1A04

Plasma Traps for Space-charge Studies: Status and Perspectives

plasma, ion, resonance, quadrupole

235

H. Okamoto, K. Fukushima, H. Higaki, K. Ito, K. Moriya, T. Okano, S. Yamaguchi
HU/AdSM, Higashi-Hiroshima, Japan
M. Endo
Hiroshima University, Higashi-Hiroshima, Japan
A. Mohri
Kyoto University, Graduate School of Human and Environmental Studies, Kyoto, Japan

Funding: Work supported in part by a Grant-in-Aid for Scientific Research, Japan Society for the Promotion of Science.
The beam physics group of Hiroshima University has developed non-neutral plasma traps dedicated solely to a wide range of beam dynamics studies. Those unique experimental tools approximately reproduce, in the laboratory frame, a many-body Coulomb system that is physically equivalent to a charged-particle beam observed in the center-of-mass frame. We have designed and constructed two different types of traps that employ either a radio-frequency electric quadrupole field or an axial magnetic field for transverse particle confinement. The former type is commonly referred to as "linear Paul trap" and the latter as "Penning trap". At present, three Paul traps and one Penning trap are operational while a new Penning trap for beam halo experiments is under construction. Each of these compact experimental facilities consists of a trap, many power supplies, a vacuum system, a computer control system, etc., and is called "S-POD (Simulator for Particle Orbit Dynamics)". S-POD is particularly useful for fundamental studies of high-intensity and high-brightness hadron beams. We here report on recent experimental outputs from S-POD and also briefly describe some future plans.

Slides TUO1A04 [7.790 MB]