IBIC2017 - List of Authors (Ferianis, M.)

Paper	Title	Page
MO2AB2	Overview and Status of Diagnostics for the ESS Project	8
	T.J. Shea, R.A. Baron, B. Cheymol, T.J. Grandsaert, H. Hassanzadegan, A. Jansson, I. Kittelmann, H. Kocevar, S. Molloy, C.A. Thomas ESS, Lund, Sweden P. Aden STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom E. Adli University of Oslo, Oslo, Norway I. Bustinduy ESS Bilbao, Zamudio, Spain M. Ferianis Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy A.J. Johansson Lund University, Lund, Sweden J. Marroncle, L. Segui CEA/IRFU, Gif-sur-Yvette, France T. Papaevangelou CEA, Gif-sur-Yvette, France M. Poggi INFN/LNL, Legnaro (PD), Italy S. Vilcins DESY, Hamburg, Germany
	The European Spallation Source, now under construction in Lund, Sweden, aims to be the world's most powerful pulsed neutron scattering facility. Driving the neutron source is a 5-MW superconducting proton linear accelerator operating at 4% beam duty factor and 14-Hz repetition rate. Nineteen partner institutions from across Europe are working with the Accelerator Division in Lund to design and construct the linac. The suite of beam instrumentation consists of over 20 unique system types delivered by over 20 partners and collaborators. Although the organizational complexity presents challenges, it also provides the vast capabilities required to achieve the technical goals. At this time, the beam instrumentation team is in transition, completing the design phase while scaling up to the deployment phase. Commissioning of the ion source has commenced in Catania, preparations for installation on the Lund site are ramping up, and basic R&D on target instrumentation continues. Beam commissioning results from the systems immediately following the ion source will be presented, along with technical highlights and status of the many remaining instrumentation systems.
	Slides MO2AB2 [48.964 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MO2AB2
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TUPWC09	Reducing Current Dependence in Position Measurements of BPM Systems by Using Pilot Tone: Quasi-Constant Power Approach	301
	G. Brajnik, S. Bassanese, G. Cautero, R. De Monte, M. Ferianis Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy G. Rehm DLS, Oxfordshire, United Kingdom
	In BPM systems, the dependence of measured position on beam current is a well-known behaviour due to many factors. Measurements were carried out at Diamond Light Source with the pilot-tone compensated RF front end developed at Elettra and they evidenced a strong link between that issue and the integral non-linearity (INL) of the ADCs. A potential way to reduce this dependence is to change the gain of the preamplifiers following the beam current variation, trying to coerce the ADC into working as close as possible to a specific level. In this paper, along with the results of the tests performed at Diamond, which confirm once again the effectiveness of the front end and of the compensation strategy, an alternative technique is proposed to mitigate the current dependence by using the pilot tone itself. The idea is to maintain constant the total amplitude at the input of the ADCs, which is composed of the signal from the beam plus the pilot tone. Our data demonstrate how, by changing the latter in a convenient way during the current variations, we can achieve a reduction of the dependence by a factor of 10 considering an equivalent current ramp from 10 to 300 mA.
	Poster TUPWC09 [1.450 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TUPWC09
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WE2AB3	A Nanofabricated Wirescanner: Design, Fabrication and Experimental Results	314
	M. Veronese, M. Ferianis, S. Grulja, G. Penco Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy S. Dal Zilio, S. Greco, M. Lazzarino IOM-CNR, Trieste, Italy L. Fröhlich DESY, Hamburg, Germany
	Measuring the transverse size and profile of an electron beams is of crucial importance in modern accelerators, large colliders, free electron lasers and storage rings. Therefore several kinds of diagnostics have been developed to this purpose such as: optical transition radiation screens, scintillating screens, laser scanners and wire scanners. The last ones although providing only a multi shot projection in one plane of the beam, provide high resolution measurement. Wire scanners typically adopt wires with thickness of the order of 10 microns that are scanned across the beam, whilst ionizing radiation generated from the impact of the electrons with the wires is detected. In this paper we present a new wire scanner design, based on nanofabrication technologies. This original approach opens up new possibilities in term of wire shape, size, material and thickness with a potential for even higher resolution down to 1-2 microns leading to increased flexibility for instrumentation designers. After describing the device and its fabrication process, we report about our first measurements performed on the FERMI FEL electron beam.
	Slides WE2AB3 [1.591 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-WE2AB3
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Overview and Status of Diagnostics for the ESS Project

8

T.J. Shea, R.A. Baron, B. Cheymol, T.J. Grandsaert, H. Hassanzadegan, A. Jansson, I. Kittelmann, H. Kocevar, S. Molloy, C.A. Thomas
ESS, Lund, Sweden
P. Aden
STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom
E. Adli
University of Oslo, Oslo, Norway
I. Bustinduy
ESS Bilbao, Zamudio, Spain
M. Ferianis
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
A.J. Johansson
Lund University, Lund, Sweden
J. Marroncle, L. Segui
CEA/IRFU, Gif-sur-Yvette, France
T. Papaevangelou
CEA, Gif-sur-Yvette, France
M. Poggi
INFN/LNL, Legnaro (PD), Italy
S. Vilcins
DESY, Hamburg, Germany

The European Spallation Source, now under construction in Lund, Sweden, aims to be the world's most powerful pulsed neutron scattering facility. Driving the neutron source is a 5-MW superconducting proton linear accelerator operating at 4% beam duty factor and 14-Hz repetition rate. Nineteen partner institutions from across Europe are working with the Accelerator Division in Lund to design and construct the linac. The suite of beam instrumentation consists of over 20 unique system types delivered by over 20 partners and collaborators. Although the organizational complexity presents challenges, it also provides the vast capabilities required to achieve the technical goals. At this time, the beam instrumentation team is in transition, completing the design phase while scaling up to the deployment phase. Commissioning of the ion source has commenced in Catania, preparations for installation on the Lund site are ramping up, and basic R&D on target instrumentation continues. Beam commissioning results from the systems immediately following the ion source will be presented, along with technical highlights and status of the many remaining instrumentation systems.

Slides MO2AB2 [48.964 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MO2AB2

Export •

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

TUPWC09

Reducing Current Dependence in Position Measurements of BPM Systems by Using Pilot Tone: Quasi-Constant Power Approach

301

G. Brajnik, S. Bassanese, G. Cautero, R. De Monte, M. Ferianis
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
G. Rehm
DLS, Oxfordshire, United Kingdom

In BPM systems, the dependence of measured position on beam current is a well-known behaviour due to many factors. Measurements were carried out at Diamond Light Source with the pilot-tone compensated RF front end developed at Elettra and they evidenced a strong link between that issue and the integral non-linearity (INL) of the ADCs. A potential way to reduce this dependence is to change the gain of the preamplifiers following the beam current variation, trying to coerce the ADC into working as close as possible to a specific level. In this paper, along with the results of the tests performed at Diamond, which confirm once again the effectiveness of the front end and of the compensation strategy, an alternative technique is proposed to mitigate the current dependence by using the pilot tone itself. The idea is to maintain constant the total amplitude at the input of the ADCs, which is composed of the signal from the beam plus the pilot tone. Our data demonstrate how, by changing the latter in a convenient way during the current variations, we can achieve a reduction of the dependence by a factor of 10 considering an equivalent current ramp from 10 to 300 mA.

Poster TUPWC09 [1.450 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TUPWC09

Export •

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

WE2AB3

A Nanofabricated Wirescanner: Design, Fabrication and Experimental Results

314

M. Veronese, M. Ferianis, S. Grulja, G. Penco
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
S. Dal Zilio, S. Greco, M. Lazzarino
IOM-CNR, Trieste, Italy
L. Fröhlich
DESY, Hamburg, Germany

Measuring the transverse size and profile of an electron beams is of crucial importance in modern accelerators, large colliders, free electron lasers and storage rings. Therefore several kinds of diagnostics have been developed to this purpose such as: optical transition radiation screens, scintillating screens, laser scanners and wire scanners. The last ones although providing only a multi shot projection in one plane of the beam, provide high resolution measurement. Wire scanners typically adopt wires with thickness of the order of 10 microns that are scanned across the beam, whilst ionizing radiation generated from the impact of the electrons with the wires is detected. In this paper we present a new wire scanner design, based on nanofabrication technologies. This original approach opens up new possibilities in term of wire shape, size, material and thickness with a potential for even higher resolution down to 1-2 microns leading to increased flexibility for instrumentation designers. After describing the device and its fabrication process, we report about our first measurements performed on the FERMI FEL electron beam.

Slides WE2AB3 [1.591 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-WE2AB3

Export •

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