IBIC2016 - List of Authors (Shea, T.J.)

Paper	Title	Page
TUPG80	Design and Implementation of Non-Invasive Profile Monitors for the ESS LEBT	551
	C.A. Thomas, T. Galh, T.J. Grandsaert, H. Kocevar, J.H. Lee, A. Serrano, T.J. Shea ESS, Lund, Sweden
	We present in this paper the design and implementation of the Non-invasive Profile Monitors for the ESS LEBT. Non-invasive Profile Monitors at ESS measure the transverse profile of the high power proton beam. As such the NPM for the LEBT is not different from NPM designed for other sections of the ESS linac, however, it received the requirement to measure the position of the beam accurately with respect to the centre of the vacuum chamber, representing the reference orbit. This particular requirement led to implement a specific design to provide absolute position measurement to the system. In the following we will first describe the design and the associated functionalities, and then we will present the performance measurements of this built system, fully integrated into the control system. Finally we will discuss the performance in comparison to the initial requirements.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG80
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPG82	Preliminary Measurement on Potential Luminescent Coating Material for the ESS Target Imaging Systems	559
	C.A. Thomas, M.A. Hartl, Y. Lee, T.J. Shea ESS, Lund, Sweden E. Adli, H. Gjersdal, M.R. Jaekel, O. Rohne University of Oslo, Oslo, Norway S. Joshi University College West, Trollhätan, Sweden
	We present in this paper the preliminary measurements performed on luminescent materials to be investigated and eventually coated on the ESS target wheel, the Proton Beam Window separating the end of the ESS Linac and the entrance of the ESS target area, and the ESS Dump. Among all the properties of the luminescent material required for the target imaging systems, luminescence yield and luminescent lifetime are essential for two reasons. The first one is trivial, since this material is the source for the imaging system and sets its potential performance. The lifetime is not generally of importance, unless the object is moving, or time dependence measurements are to be done. In our case, the target wheel is moving, and measurement of the beam density current may have to be performed at the 10μups scale. Thus luminescence lifetime of the coating material should be known and measured. In this paper, we present the luminescence measurements of the photo-luminescent lifetime of several materials currently under studies to be used eventually for the first beam on target.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG82
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPG05	Design of Stripline Beam Position Monitors for the ESS MEBT	620
	S. Varnasseri, I. Bustinduy, A. Ortega, I. Rueda, A. Zugazaga ESS Bilbao, Derio, Spain R.A. Baron, H. Hassanzadegan, A. Jansson, T.J. Shea ESS, Lund, Sweden
	There will be overall 8 Beam Position Monitors (BPM) installed in MEBT of ESS. Seven of them will be used for the measurement of beam position, phase and intensity. One BPM will be used for the fast timing characterization of the chopped beam. The design is based on shortened stripline to accommodate the signal level for low velocity proton beam within MEBT read by electronics. Due to mechanical space limits, all the BPMs are embedded inside quadrupoles; which requires special care on the magnetic properties of the materials within BPM sets and in particular the feedthroughs. The prototype electromagnetic and mechanical design is finished and its fabrication is underway. This paper gives an overview of the electromagnetic and mechanical design and related analysis including position signal sensitivity of the BPMs.
	Poster WEPG05 [1.107 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG05
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Design and Implementation of Non-Invasive Profile Monitors for the ESS LEBT

551

C.A. Thomas, T. Galh, T.J. Grandsaert, H. Kocevar, J.H. Lee, A. Serrano, T.J. Shea
ESS, Lund, Sweden

We present in this paper the design and implementation of the Non-invasive Profile Monitors for the ESS LEBT. Non-invasive Profile Monitors at ESS measure the transverse profile of the high power proton beam. As such the NPM for the LEBT is not different from NPM designed for other sections of the ESS linac, however, it received the requirement to measure the position of the beam accurately with respect to the centre of the vacuum chamber, representing the reference orbit. This particular requirement led to implement a specific design to provide absolute position measurement to the system. In the following we will first describe the design and the associated functionalities, and then we will present the performance measurements of this built system, fully integrated into the control system. Finally we will discuss the performance in comparison to the initial requirements.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG80

Export •

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

TUPG82

Preliminary Measurement on Potential Luminescent Coating Material for the ESS Target Imaging Systems

559

C.A. Thomas, M.A. Hartl, Y. Lee, T.J. Shea
ESS, Lund, Sweden
E. Adli, H. Gjersdal, M.R. Jaekel, O. Rohne
University of Oslo, Oslo, Norway
S. Joshi
University College West, Trollhätan, Sweden

We present in this paper the preliminary measurements performed on luminescent materials to be investigated and eventually coated on the ESS target wheel, the Proton Beam Window separating the end of the ESS Linac and the entrance of the ESS target area, and the ESS Dump. Among all the properties of the luminescent material required for the target imaging systems, luminescence yield and luminescent lifetime are essential for two reasons. The first one is trivial, since this material is the source for the imaging system and sets its potential performance. The lifetime is not generally of importance, unless the object is moving, or time dependence measurements are to be done. In our case, the target wheel is moving, and measurement of the beam density current may have to be performed at the 10μups scale. Thus luminescence lifetime of the coating material should be known and measured. In this paper, we present the luminescence measurements of the photo-luminescent lifetime of several materials currently under studies to be used eventually for the first beam on target.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG82

Export •

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

WEPG05

Design of Stripline Beam Position Monitors for the ESS MEBT

620

S. Varnasseri, I. Bustinduy, A. Ortega, I. Rueda, A. Zugazaga
ESS Bilbao, Derio, Spain
R.A. Baron, H. Hassanzadegan, A. Jansson, T.J. Shea
ESS, Lund, Sweden

There will be overall 8 Beam Position Monitors (BPM) installed in MEBT of ESS. Seven of them will be used for the measurement of beam position, phase and intensity. One BPM will be used for the fast timing characterization of the chopped beam. The design is based on shortened stripline to accommodate the signal level for low velocity proton beam within MEBT read by electronics. Due to mechanical space limits, all the BPMs are embedded inside quadrupoles; which requires special care on the magnetic properties of the materials within BPM sets and in particular the feedthroughs. The prototype electromagnetic and mechanical design is finished and its fabrication is underway. This paper gives an overview of the electromagnetic and mechanical design and related analysis including position signal sensitivity of the BPMs.

Poster WEPG05 [1.107 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG05

Export •

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