HB2018 - Table of Session: TUP1WE (WG-E)

Paper	Title	Page
TUP1WE01	RAON Beam Diagnostics System
	Y.S. Chung, G.D. Kim, H.J. Woo IBS, Daejeon, Republic of Korea J.W. Kwon Korea University, Seoul, Republic of Korea
	The ultimate goal of RAON is to accelerate uranium and proton beams up to 200 MeV/u and 600 MeV, with a maximum beam currents of 8.3 pμA and 660 pμA, respectively. Various types of beam diagnostic devices such as beam current monitor, beam position monitor (BPM), beam profile monitor, beam phase monitor, and beam loss monitor are required for setting accelerator parameters, monitoring beam acceleration and transport, and improving accelerator system. ACCT and Faraday cup will be used for beam intensity measurement. Hundreds of BPMs will be used for the measurement of transversal position and phase. Various profile monitors such as wire scanner, wire grid, and Fast Faraday cup will be installed for monitoring beam shapes in the transversal and longitudinal beam directions. And plastic detector, proportional counter, and Halo Monitor Ring are considered for beam loss monitor. The design and status of RAON beam diagnostics system will be discussed.
	Slides TUP1WE01 [4.902 MB]
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TUP1WE02	Hollow Electron-Lens Assisted Collimation and Plans for the LHC	92
	D. Mirarchi, H. Garcia Morales, A. Mereghetti, S. Redaelli, J.F. Wagner CERN, Geneva, Switzerland W. Fischer, X. Gu BNL, Upton, Long Island, New York, USA H. Garcia Morales Royal Holloway, University of London, Surrey, United Kingdom D. Mirarchi The University of Manchester, The Photon Science Institute, Manchester, United Kingdom G. Stancari Fermilab, Batavia, Illinois, USA J.F. Wagner IAP, Frankfurt am Main, Germany
	The hollow electron lens (e-lens) is a very powerful and advanced tool for active control of diffusion speed of halo particles in hadron colliders. Thus, it can be used for a controlled depletion of beam tails and enhanced beam halo collimation. This is of particular interest in view of the upgrade of the Large Hadron Collider (LHC) at CERN, in the framework of the High-Luminosity LHC project (HL-LHC). The estimated stored energy in the tails of the HL-LHC beams is about 30 MJ, posing serious constraints on its control and safe disposal. In particular, orbit jitter can cause significant loss spikes on primary collimators, which can lead to accidental beam bump and magnet quench. Successful tests of e-lens assisted collimation have been carried out at the Tevatron collider at Fermilab and a review of the main outcomes is shown. Preliminary results of recent experiments performed at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven, put in place to explore different operational scenarios studies for the HL-LHC, are also discussed. Status and plans for the deployment of hollow electron lenses at the HL-LHC are presented.
	Slides TUP1WE02 [29.382 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-TUP1WE02
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TUP1WE03	Beam Instruments for High Power Spallation Neutron Source and Facility for ADS	99
	S.I. Meigo JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
	As increase of beam power, beam instruments play an essential role in the Hadron accelerator facility. In J-PARC, the pitting erosion on the mercury target vessel for the spallation neutron source is one of a pivotal issue to operate with the high power of the beam operation. Since the erosion is proportional to the 4th power of the beam current density, the minimization of the peak current density is required. To achieve low current density, the beam-flattening system by nonlinear beam optics using octupole magnets in J-PARC. By the present system, the peak density was successfully reduced by 30% compared to the ordinary linear optics. Also in J-PARC, transmutation experimental facility is planned for the realization of the accelerator-driven system (ADS), which will employ powerful accelerator with the beam power of 30 MW. To achieve equivalent damage on the target as the ADS, the target will be received high current density. For the continuous observation of the beam status on the target, a robust beam profile monitor is required. We have been developed beam profile monitor by using heavy-ion of Ar beam to give the damage efficiently.
	Slides TUP1WE03 [15.133 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-TUP1WE03
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

TUP1WE01

RAON Beam Diagnostics System

Y.S. Chung, G.D. Kim, H.J. Woo
IBS, Daejeon, Republic of Korea
J.W. Kwon
Korea University, Seoul, Republic of Korea

The ultimate goal of RAON is to accelerate uranium and proton beams up to 200 MeV/u and 600 MeV, with a maximum beam currents of 8.3 pμA and 660 pμA, respectively. Various types of beam diagnostic devices such as beam current monitor, beam position monitor (BPM), beam profile monitor, beam phase monitor, and beam loss monitor are required for setting accelerator parameters, monitoring beam acceleration and transport, and improving accelerator system. ACCT and Faraday cup will be used for beam intensity measurement. Hundreds of BPMs will be used for the measurement of transversal position and phase. Various profile monitors such as wire scanner, wire grid, and Fast Faraday cup will be installed for monitoring beam shapes in the transversal and longitudinal beam directions. And plastic detector, proportional counter, and Halo Monitor Ring are considered for beam loss monitor. The design and status of RAON beam diagnostics system will be discussed.

Slides TUP1WE01 [4.902 MB]

Export •

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

TUP1WE02

Hollow Electron-Lens Assisted Collimation and Plans for the LHC

92

D. Mirarchi, H. Garcia Morales, A. Mereghetti, S. Redaelli, J.F. Wagner
CERN, Geneva, Switzerland
W. Fischer, X. Gu
BNL, Upton, Long Island, New York, USA
H. Garcia Morales
Royal Holloway, University of London, Surrey, United Kingdom
D. Mirarchi
The University of Manchester, The Photon Science Institute, Manchester, United Kingdom
G. Stancari
Fermilab, Batavia, Illinois, USA
J.F. Wagner
IAP, Frankfurt am Main, Germany

The hollow electron lens (e-lens) is a very powerful and advanced tool for active control of diffusion speed of halo particles in hadron colliders. Thus, it can be used for a controlled depletion of beam tails and enhanced beam halo collimation. This is of particular interest in view of the upgrade of the Large Hadron Collider (LHC) at CERN, in the framework of the High-Luminosity LHC project (HL-LHC). The estimated stored energy in the tails of the HL-LHC beams is about 30 MJ, posing serious constraints on its control and safe disposal. In particular, orbit jitter can cause significant loss spikes on primary collimators, which can lead to accidental beam bump and magnet quench. Successful tests of e-lens assisted collimation have been carried out at the Tevatron collider at Fermilab and a review of the main outcomes is shown. Preliminary results of recent experiments performed at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven, put in place to explore different operational scenarios studies for the HL-LHC, are also discussed. Status and plans for the deployment of hollow electron lenses at the HL-LHC are presented.

Slides TUP1WE02 [29.382 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-TUP1WE02

Export •

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

TUP1WE03

Beam Instruments for High Power Spallation Neutron Source and Facility for ADS

99

S.I. Meigo
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan

As increase of beam power, beam instruments play an essential role in the Hadron accelerator facility. In J-PARC, the pitting erosion on the mercury target vessel for the spallation neutron source is one of a pivotal issue to operate with the high power of the beam operation. Since the erosion is proportional to the 4th power of the beam current density, the minimization of the peak current density is required. To achieve low current density, the beam-flattening system by nonlinear beam optics using octupole magnets in J-PARC. By the present system, the peak density was successfully reduced by 30% compared to the ordinary linear optics. Also in J-PARC, transmutation experimental facility is planned for the realization of the accelerator-driven system (ADS), which will employ powerful accelerator with the beam power of 30 MW. To achieve equivalent damage on the target as the ADS, the target will be received high current density. For the continuous observation of the beam status on the target, a robust beam profile monitor is required. We have been developed beam profile monitor by using heavy-ion of Ar beam to give the damage efficiently.

Slides TUP1WE03 [15.133 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-HB2018-TUP1WE03

Export •

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