IBIC2019 - List of Authors (Martins, J.P.S.)

Paper	Title	Page
MOPP014	Design of the ESS MEBT Faraday Cup	106
	A. Rodríguez Páramo, I. Bustinduy, I. Mazkiaran, R. Miracoli, V. Toyos, S. Varnasseri, D. de Cos, C. de la Cruz ESS Bilbao, Zamudio, Spain E.M. Donegani, J.P.S. Martins ESS, Lund, Sweden
	The European Spallation Source (ESS) is currently under construction and the Medium Energy Beam Transfer (MEBT) is developed by ESS-Bilbao as an in-kind contribution. In the MEBT a set of diagnostics is included for beam characterization, among them the MEBT Faraday Cup is used to measure beam current and as a beam stopper for the commissioning modes. The main challenges for the design and manufacturing of the Faraday Cup are the high irradiation loads and the necessity of a compact design due to the space constraints in the MEBT. We describe the design of the FC, characterized by a graphite collector, required to withstand irradiation, and a repeller for suppression of secondary electrons. For the operation of the Faraday Cup acquisition electronics and control system are developed, all systems have been integrated in the ESS-Bilbao ECR ion source to test operation under beam conditions. In this work, we discuss the design of the Faraday Cup, the results of the tests and how they agree with the expected performance of the Faraday Cup.
	Poster MOPP014 [1.786 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP014
About •	paper received ※ 02 September 2019 paper accepted ※ 08 September 2019 issue date ※ 10 November 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPP032	J-PARC Test of ESS Beam on Target Diagnostics Prototypes Aperture Monitor and GRID	387
	C.A. Thomas, J. Etxeberria, H. Kocevar, J.P.S. Martins, T.J. Shea ESS, Lund, Sweden A.J. Johansson, M. Törmänen Lund University, Lund, Sweden S.I. Meigo, M. Ooi JAEA/J-PARC, Tokai-mura, Japan H. Niu, B. Zhang IMP/CAS, Lanzhou, People’s Republic of China
	The ESS high power beam will be delivered to the spallation target with high degree of control. To this end, we have designed a suite of instruments which provide measurement of the beam characteristics in a drift space a few meters from the target. Two of these instruments, the APTerure Monitor (APTM) and the GRID are presented. The APTM is designed to measure the fraction of beam going through the defined aperture; its time acquisition ranges from intra-pulse at µs sampling rate to many pulses over seconds. The GRID measures the projected horizontal and vertical profiles, sampling the pulse at 1MHz. A prototype of these two instruments has been designed and installed in the 3NBT dump line of J-PARC. They are designed to test functionality of these instruments in a similar environment as ESS. The 3NBT Dump line at J-PARC presents such an environment. In the second part of the paper we report the results and the measurements performed to test the prototypes. Before concluding we will discuss the results and propose improvements to the instruments final design.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-TUPP032
About •	paper received ※ 04 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Design of the ESS MEBT Faraday Cup

106

A. Rodríguez Páramo, I. Bustinduy, I. Mazkiaran, R. Miracoli, V. Toyos, S. Varnasseri, D. de Cos, C. de la Cruz
ESS Bilbao, Zamudio, Spain
E.M. Donegani, J.P.S. Martins
ESS, Lund, Sweden

The European Spallation Source (ESS) is currently under construction and the Medium Energy Beam Transfer (MEBT) is developed by ESS-Bilbao as an in-kind contribution. In the MEBT a set of diagnostics is included for beam characterization, among them the MEBT Faraday Cup is used to measure beam current and as a beam stopper for the commissioning modes. The main challenges for the design and manufacturing of the Faraday Cup are the high irradiation loads and the necessity of a compact design due to the space constraints in the MEBT. We describe the design of the FC, characterized by a graphite collector, required to withstand irradiation, and a repeller for suppression of secondary electrons. For the operation of the Faraday Cup acquisition electronics and control system are developed, all systems have been integrated in the ESS-Bilbao ECR ion source to test operation under beam conditions. In this work, we discuss the design of the Faraday Cup, the results of the tests and how they agree with the expected performance of the Faraday Cup.

Poster MOPP014 [1.786 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP014

About •

paper received ※ 02 September 2019 paper accepted ※ 08 September 2019 issue date ※ 10 November 2019

Export •

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

TUPP032

J-PARC Test of ESS Beam on Target Diagnostics Prototypes Aperture Monitor and GRID

387

C.A. Thomas, J. Etxeberria, H. Kocevar, J.P.S. Martins, T.J. Shea
ESS, Lund, Sweden
A.J. Johansson, M. Törmänen
Lund University, Lund, Sweden
S.I. Meigo, M. Ooi
JAEA/J-PARC, Tokai-mura, Japan
H. Niu, B. Zhang
IMP/CAS, Lanzhou, People’s Republic of China

The ESS high power beam will be delivered to the spallation target with high degree of control. To this end, we have designed a suite of instruments which provide measurement of the beam characteristics in a drift space a few meters from the target. Two of these instruments, the APTerure Monitor (APTM) and the GRID are presented. The APTM is designed to measure the fraction of beam going through the defined aperture; its time acquisition ranges from intra-pulse at µs sampling rate to many pulses over seconds. The GRID measures the projected horizontal and vertical profiles, sampling the pulse at 1MHz. A prototype of these two instruments has been designed and installed in the 3NBT dump line of J-PARC. They are designed to test functionality of these instruments in a similar environment as ESS. The 3NBT Dump line at J-PARC presents such an environment. In the second part of the paper we report the results and the measurements performed to test the prototypes. Before concluding we will discuss the results and propose improvements to the instruments final design.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-TUPP032

About •

paper received ※ 04 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019

Export •

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