IBIC2017 - List of Authors (Jones, R.J.)

Paper	Title	Page
WE3AB1	The LHC Beam Gas Vertex Detector - a Non-Invasive Profile Monitor for High Energy Machines	323
	S. Vlachos, A. Alexopoulos, C. Barschel, E. Bravin, G. Bregliozzi, N. Chritin, B. Dehning, M. Ferro-Luzzi, M. Giovannozzi, R. Jacobsson, L.K. Jensen, R.J. Jones, V. Kain, R. Matev, M.N. Rihl, V. Salustino Guimaraes, R. Veness, B. Würkner CERN, Geneva, Switzerland A. Bay, F. Blanc, S. Gianì, O. Girard, G.J. Haefeli, P. Hopchev, A. Kuonen, T. Nakada, O. Schneider, M. Tobin, Q.D. Veyrat, Z. Xu EPFL, Lausanne, Switzerland R. Greim, W. Karpinski, S. Schael, A. Schultz von Dratzig, G. Schwering, M. Wlochal RWTH, Aachen, Germany
	The Beam Gas Vertex (BGV) monitor is being developed as part of the High Luminosity LHC project with the aim of providing measurements with less than 5% error on the beam size with an integration time of 5 minutes. It will be the only instrument capable of non-invasive beam size measurement throughout the LHC acceleration cycle with high intensity physics beams. A prototype BGV monitor has been installed in the LHC since 2016. Particles emerging from beam-gas interactions are recorded by 2 planes of scintillating fibre detectors. Based on vertex reconstruction of the detected tracks, this monitor allows non-invasive measurement of beam profiles with bunch-by-bunch resolution. A dedicated computer farm performs track reconstruction and event analysis on-line so that real-time beam profile measurements can be provided. Data taken in 2016 and 2017 will be presented that demonstrate the power of the method.
	Slides WE3AB1 [2.276 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-WE3AB1
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)

Paper

Title

Page

The LHC Beam Gas Vertex Detector - a Non-Invasive Profile Monitor for High Energy Machines

323

S. Vlachos, A. Alexopoulos, C. Barschel, E. Bravin, G. Bregliozzi, N. Chritin, B. Dehning, M. Ferro-Luzzi, M. Giovannozzi, R. Jacobsson, L.K. Jensen, R.J. Jones, V. Kain, R. Matev, M.N. Rihl, V. Salustino Guimaraes, R. Veness, B. Würkner
CERN, Geneva, Switzerland
A. Bay, F. Blanc, S. Gianì, O. Girard, G.J. Haefeli, P. Hopchev, A. Kuonen, T. Nakada, O. Schneider, M. Tobin, Q.D. Veyrat, Z. Xu
EPFL, Lausanne, Switzerland
R. Greim, W. Karpinski, S. Schael, A. Schultz von Dratzig, G. Schwering, M. Wlochal
RWTH, Aachen, Germany

The Beam Gas Vertex (BGV) monitor is being developed as part of the High Luminosity LHC project with the aim of providing measurements with less than 5% error on the beam size with an integration time of 5 minutes. It will be the only instrument capable of non-invasive beam size measurement throughout the LHC acceleration cycle with high intensity physics beams. A prototype BGV monitor has been installed in the LHC since 2016. Particles emerging from beam-gas interactions are recorded by 2 planes of scintillating fibre detectors. Based on vertex reconstruction of the detected tracks, this monitor allows non-invasive measurement of beam profiles with bunch-by-bunch resolution. A dedicated computer farm performs track reconstruction and event analysis on-line so that real-time beam profile measurements can be provided. Data taken in 2016 and 2017 will be presented that demonstrate the power of the method.

Slides WE3AB1 [2.276 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-WE3AB1

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)