HB2016 - List of Authors (Shea, T.J.)

Paper

Title

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Simulations and Detector Technologies for the Beam Loss Monitoring System at the ESS Linac

553

I. Dolenc Kittelmann, T.J. Shea
ESS, Lund, Sweden

The European Spallation Source (ESS), which is currently under construction, will be a neutron source based on 5 MW, 2 GeV superconducting proton linac. Among other beam instrumentation systems, this high intensity linac requires a Beam Loss Monitoring (BLM) system. An important function of the BLM system is to protect the linac from beam-induced damage by detecting unacceptably high beam loss and promptly inhibiting beam production. In addition to protection functionality, the system is expected to provide the means to monitor the beam losses during all modes of operation with the aim to avoid excessive machine activation. This paper focuses on the plans and recent results of the beam loss studies based on Monte Carlo simulations in order to refine the ESS BLM detector requirements by providing the estimations on expected particle fluxes and their spectra at detector locations. Furthermore, the planned detector technologies for the ESS BLM system will be presented.

Slides THAM6Y01 [3.600 MB]

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THAM7Y01

Beam-Material Issues for Instrumentation in a 5 MW Monolith

M.A. Hartl, Y. Lee, T.J. Shea, C.A. Thomas
ESS, Lund, Sweden

With the European Spallation Source (ESS) striving to become the world’s most powerful spallation neutron source, the proton accelerator driving the spallation process at ESS has to be very powerful as well. The 5MW/2GeV proton beam delivered from a superconducting linear accelerator sets quite demanding requirements on the beam diagnostic system located in the proton beam instrumentation plug (PBIP). This system is observing beam properties and contains multi-wired grids for beam profile monitoring, thermocouples and secondary emission blades for aperture monitoring and a luminescent coating for imaging the beam spot on the target. These devices are critical for detection of any missteering of the beam and consequently for machine protection. Since the components are exposed to high doses of radiation, radiation damage is to be expected and it is challenging to ensure full functionality of the diagnostic system over a set period of runtime. Material choices for these components in the PBIP with respect to lifetime in a radiation field and operational criteria will be presented.

Slides THAM7Y01 [8.115 MB]

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FRAM6P01

Summary WG-E

M.G. Minty
BNL, Upton, Long Island, New York, USA
H.-S. Lee
PAL, Pohang, Kyungbuk, Republic of Korea
T.J. Shea
ESS, Lund, Sweden

Friday Summary

Slides FRAM6P01 [7.481 MB]

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Paper	Title	Page
THAM6Y01	Simulations and Detector Technologies for the Beam Loss Monitoring System at the ESS Linac	553
	I. Dolenc Kittelmann, T.J. Shea ESS, Lund, Sweden
	The European Spallation Source (ESS), which is currently under construction, will be a neutron source based on 5 MW, 2 GeV superconducting proton linac. Among other beam instrumentation systems, this high intensity linac requires a Beam Loss Monitoring (BLM) system. An important function of the BLM system is to protect the linac from beam-induced damage by detecting unacceptably high beam loss and promptly inhibiting beam production. In addition to protection functionality, the system is expected to provide the means to monitor the beam losses during all modes of operation with the aim to avoid excessive machine activation. This paper focuses on the plans and recent results of the beam loss studies based on Monte Carlo simulations in order to refine the ESS BLM detector requirements by providing the estimations on expected particle fluxes and their spectra at detector locations. Furthermore, the planned detector technologies for the ESS BLM system will be presented.
	Slides THAM6Y01 [3.600 MB]
Export •	reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THAM7Y01	Beam-Material Issues for Instrumentation in a 5 MW Monolith
	M.A. Hartl, Y. Lee, T.J. Shea, C.A. Thomas ESS, Lund, Sweden
	With the European Spallation Source (ESS) striving to become the world’s most powerful spallation neutron source, the proton accelerator driving the spallation process at ESS has to be very powerful as well. The 5MW/2GeV proton beam delivered from a superconducting linear accelerator sets quite demanding requirements on the beam diagnostic system located in the proton beam instrumentation plug (PBIP). This system is observing beam properties and contains multi-wired grids for beam profile monitoring, thermocouples and secondary emission blades for aperture monitoring and a luminescent coating for imaging the beam spot on the target. These devices are critical for detection of any missteering of the beam and consequently for machine protection. Since the components are exposed to high doses of radiation, radiation damage is to be expected and it is challenging to ensure full functionality of the diagnostic system over a set period of runtime. Material choices for these components in the PBIP with respect to lifetime in a radiation field and operational criteria will be presented.
	Slides THAM7Y01 [8.115 MB]
Export •	reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FRAM6P01	Summary WG-E
	M.G. Minty BNL, Upton, Long Island, New York, USA H.-S. Lee PAL, Pohang, Kyungbuk, Republic of Korea T.J. Shea ESS, Lund, Sweden
	Friday Summary
	Slides FRAM6P01 [7.481 MB]
Export •	reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)