IBIC2017 - List of Authors (Soby, L.)

Paper	Title	Page
MOPWC07	Commissioning of the Beam Instrumentation for the Half Sector Test in Linac4 with a 160 MeV H⁻ Beam	117
	G. Guidoboni, J.C.A. Allica, C. Bracco, S. Burger, G.J. Focker, B. Mikulec, A. Navarro Fernandez, F. Roncarolo, L. Søby, C. Zamantzas CERN, Geneva, Switzerland
	In the framework of the LHC Injector Upgrade (LIU) project, the Proton Synchrotron Booster (PSB) will be extensively modified during the Long Shutdown 2 (LS2, 2019-2020) at CERN [1]. This includes a new injector, Linac4, which will provide a 160 MeV H⁻ beam and a complete new injection section for the PSB composed essentially of a chicane and a stripping foil system. The equivalent of half of this new injection chicane, so-called Half-Sector Test (HST), was tempo-rarily installed in the Linac4 transfer line to evaluate the performance of the novel beam instrumentation, such as, stripping foils, monitoring screens, beam cur-rent transformers, H⁰/H⁻ monitor and dump, beam loss monitors, and beam position monitors. The results of the instrumentation commissioning of the HST are presented in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPWC07
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TUPCF05	The Orbit Measurement System for the CERN Extra Low Energy Antiproton Ring	206
	O. Marqversen, M.E. Angoletta, M. Jaussi, J.C. Molendijk, R. Ruffieux, J. Sanchez-Quesada, L. Søby CERN, Geneva, Switzerland R. Marco-Hernandez IFIC, Valencia, Spain
	The CERN Extra Low ENergy Antiproton ring (ELENA) intended to decelerate anti-protons from the CERN Antiproton Decelerator from 100Mev/c to 13.7MeV/c, has been equipped with an orbit measurement system consisting of 10 horizontal and 10 vertical electrostatic pick-ups. Using charge amplifiers the signals are converted into sum and difference signals that, once digitalized, are down converted to baseband and used to calculate intensity independent beam positions. The system is implemented on seven VME switched serial based FPGA / DSP boards carrying direct digital synthesisers and analogue to digital converters on standard FPGA mezzanine cards. The switched serial high-speed bus allows intercommunication between DSPs and thus averaging of the signals from all pick-ups in real-time to be used either in the RF radial feedback system or for longitudinal Schottky diagnostics. The system implementation and initial orbit measurements with the H⁻ beam used for ELENA commissioning will be presented, as well as future upgrades for trajectory and longitudinal Schottky measurements.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TUPCF05
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TH2AB3	Optimization of the Cryogenic Current Comparator (CCC) for Beam Intensity Measurement	503
	T. Sieber, P. Kowina, F. Kurian, H. Reeg, M. Schwickert, T. Stöhlker GSI, Darmstadt, Germany H. De Gersem, N. Marsic TEMF, TU Darmstadt, Darmstadt, Germany M.F. Fernandes, R.J. Jones, L. Søby, J. Tan, G. Tranquille CERN, Geneva, Switzerland J. Golm, R. Neubert, F. Schmidl, P. Seidel, V. Tympel FSU Jena, Jena, Germany M. Schmelz, R. Stolz IPHT, Jena, Germany T. Stöhlker HIJ, Jena, Germany T. Stöhlker IOQ, Jena, Germany C.P. Welsch The University of Liverpool, Liverpool, United Kingdom V. Zakosarenko Supracon AG, Jena, Germany
	Funding: Work supported by the German Federal Ministry of Research under contract No. 05P15SJRBA Triggered by the need for current measurement in the nA range for slow extracted beams and for the beams in the storage rings at FAIR and CERN, the idea of the CCC as a current transformer has been revitalized during the last ten years. Compared to the first prototype, developed at GSI in the 90s, the second generation of CCCs is based on the possibility of detailed simulation of superconducting magnetic shielding properties, new nano-crystalline materials for the magnetic ring-cores, and on superior commercially available SQUID systems. In 2014, nA resolution measurements at 2 kHz bandwidth demonstrated the possibility of spill analysis at slow extracted beams from GSI SIS18. In the following year, the first stand-alone CCC system, including a cryostat with separate He liquefier, started operation in the CERN AD. Although the existing systems show an outstanding current resolution, their cost efficiency and robustness, as well as noise and vibration sensitivity can still be improved, which is subject of ongoing research. In this contribution recent results of our CCC tests are shown and future developments are discussed.
	Slides TH2AB3 [5.771 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TH2AB3
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Paper

Title

Page

Commissioning of the Beam Instrumentation for the Half Sector Test in Linac4 with a 160 MeV H⁻ Beam

117

G. Guidoboni, J.C.A. Allica, C. Bracco, S. Burger, G.J. Focker, B. Mikulec, A. Navarro Fernandez, F. Roncarolo, L. Søby, C. Zamantzas
CERN, Geneva, Switzerland

In the framework of the LHC Injector Upgrade (LIU) project, the Proton Synchrotron Booster (PSB) will be extensively modified during the Long Shutdown 2 (LS2, 2019-2020) at CERN [1]. This includes a new injector, Linac4, which will provide a 160 MeV H⁻ beam and a complete new injection section for the PSB composed essentially of a chicane and a stripping foil system. The equivalent of half of this new injection chicane, so-called Half-Sector Test (HST), was tempo-rarily installed in the Linac4 transfer line to evaluate the performance of the novel beam instrumentation, such as, stripping foils, monitoring screens, beam cur-rent transformers, H⁰/H⁻ monitor and dump, beam loss monitors, and beam position monitors. The results of the instrumentation commissioning of the HST are presented in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPWC07

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

TUPCF05

The Orbit Measurement System for the CERN Extra Low Energy Antiproton Ring

206

O. Marqversen, M.E. Angoletta, M. Jaussi, J.C. Molendijk, R. Ruffieux, J. Sanchez-Quesada, L. Søby
CERN, Geneva, Switzerland
R. Marco-Hernandez
IFIC, Valencia, Spain

The CERN Extra Low ENergy Antiproton ring (ELENA) intended to decelerate anti-protons from the CERN Antiproton Decelerator from 100Mev/c to 13.7MeV/c, has been equipped with an orbit measurement system consisting of 10 horizontal and 10 vertical electrostatic pick-ups. Using charge amplifiers the signals are converted into sum and difference signals that, once digitalized, are down converted to baseband and used to calculate intensity independent beam positions. The system is implemented on seven VME switched serial based FPGA / DSP boards carrying direct digital synthesisers and analogue to digital converters on standard FPGA mezzanine cards. The switched serial high-speed bus allows intercommunication between DSPs and thus averaging of the signals from all pick-ups in real-time to be used either in the RF radial feedback system or for longitudinal Schottky diagnostics. The system implementation and initial orbit measurements with the H⁻ beam used for ELENA commissioning will be presented, as well as future upgrades for trajectory and longitudinal Schottky measurements.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TUPCF05

Export •

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

TH2AB3

Optimization of the Cryogenic Current Comparator (CCC) for Beam Intensity Measurement

503

T. Sieber, P. Kowina, F. Kurian, H. Reeg, M. Schwickert, T. Stöhlker
GSI, Darmstadt, Germany
H. De Gersem, N. Marsic
TEMF, TU Darmstadt, Darmstadt, Germany
M.F. Fernandes, R.J. Jones, L. Søby, J. Tan, G. Tranquille
CERN, Geneva, Switzerland
J. Golm, R. Neubert, F. Schmidl, P. Seidel, V. Tympel
FSU Jena, Jena, Germany
M. Schmelz, R. Stolz
IPHT, Jena, Germany
T. Stöhlker
HIJ, Jena, Germany
T. Stöhlker
IOQ, Jena, Germany
C.P. Welsch
The University of Liverpool, Liverpool, United Kingdom
V. Zakosarenko
Supracon AG, Jena, Germany

Funding: Work supported by the German Federal Ministry of Research under contract No. 05P15SJRBA
Triggered by the need for current measurement in the nA range for slow extracted beams and for the beams in the storage rings at FAIR and CERN, the idea of the CCC as a current transformer has been revitalized during the last ten years. Compared to the first prototype, developed at GSI in the 90s, the second generation of CCCs is based on the possibility of detailed simulation of superconducting magnetic shielding properties, new nano-crystalline materials for the magnetic ring-cores, and on superior commercially available SQUID systems. In 2014, nA resolution measurements at 2 kHz bandwidth demonstrated the possibility of spill analysis at slow extracted beams from GSI SIS18. In the following year, the first stand-alone CCC system, including a cryostat with separate He liquefier, started operation in the CERN AD. Although the existing systems show an outstanding current resolution, their cost efficiency and robustness, as well as noise and vibration sensitivity can still be improved, which is subject of ongoing research. In this contribution recent results of our CCC tests are shown and future developments are discussed.

Slides TH2AB3 [5.771 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TH2AB3

Export •

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