IPAC2016 - List of Authors (Spiller, P.J.)

Paper	Title	Page
MOPOY055	Technologies for Stabilizing the Dynamic Vacuum and Charge Related Beam Loss in Heavy Ion Synchrotrons	977
	P.J. Spiller, L.H.J. Bozyk, C. Omet, I. Pongrac, St. Wilfert GSI, Darmstadt, Germany
	With increasing the intensities of heavy ion beams in synchrotrons, charge related beam loss become more and more significant. In order to reduce space charge forces and to minimize the incoherent tune spread, the charge state of heavy Ions shall be lowered. Thus the cross section for charge related beam loss is further enhanced. For the FAIR project, GSI has developed a number of different technologies to stabilize the dynamic residual gas pressure and thereby to minimize charge related beam loss at high intensity heavy ion operation. Technologies suitable for such issues are, dedicated lattice structures, cold and warm ion catchers, NEG coated and cryogenic magnet chambers and cryo-adsorption pumps.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY055
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THPMW019	Concept and Design of the Injection Kicker System for the FAIR SIS100 Synchrotron	3582
	I.J. Petzenhauser, U. Blell, P.J. Spiller GSI, Darmstadt, Germany L.O. Baandrup, H. Bach, N. Hauge, K.F. Laurberg Danfysik A/S, Taastrup, Denmark G. Blokesch, M. Osemann Ampegon PPT GmbH, Dortmund, Germany
	The SIS100 synchrotron at GSI, Germany is designed for acceleration of protons and ions. For the injection into the synchrotron a kicker magnet system, which consists of 6 ferrite kicker magnet modules, installed in one vacuum tank with a required vacuum quality better than 10-9 Pa, will be needed. The magnetic field should be 118 mT in a 65 mm gap. These kicker magnet modules will be supplied with 6 separate pulser circuits. Each pulser has to produce a pulse current of up to 7 kA at a PFL (pulse forming line) voltage of 80kV at an impedance of 5.7 Ohm. The rise time has to be 130 ns and the variable pulse length is between 0.5 to 2.0 μs. The design concept for this kicker system from Ampegon PPT and DANFYSIK and the specific challenges will be described.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMW019
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THPMY040	Laser Cooling of Relativistic Highly Charged Ions at FAIR	3747
	D.F.A. Winters, O. Boine-Frankenheim, L. Eidam, T. Kühl, P.J. Spiller, T. Stöhlker GSI, Darmstadt, Germany T. Beck, G. Birkl, D. Kiefer, T. Walther TU Darmstadt, Darmstadt, Germany M.H. Bussmann, U. Schramm, M. Siebold Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiation Physics, Dresden, Germany V. Hannen, D. Winzen Westfälische Wilhelms-Universität Münster, Institut für Kernphysik, Münster, Germany M. Löser HZDR, Dresden, Germany X. Ma, W.Q. Wen IMP/CAS, Lanzhou, People's Republic of China
	An overview of recent laser cooling activities with relativistic heavy ion beams at the ESR (GSI, Darmstadt, Germany) and the CSRe (IMP, Lanzhou, China) storage rings will be presented. Some of the latest results will be shown and new developments concerning xuv-detector systems and cw and pulsed laser systems will be addressed. Finally, plans for laser cooling (& spectroscopy) at the future facility FAIR in Darmstadt will be presented, focusing on the SIS100.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMY040
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THPOY032	The Dual Use of Beam Loss Monitors at FAIR-SIS100: General Diagnostics and Quench Prevention of Superconducting Magnets	4167
	S. Damjanovic, P. Kowina, C. Omet, M. Sapinski, M. Schwickert, P.J. Spiller GSI, Darmstadt, Germany
	In view of the planned coverage of the FAIR-SIS100 synchrotron with beam loss monitors (BLMs), FLUKA studies were performed aiming at two goals: i) evaluation of the sensitivity of the LHC-IC type detectors to the potential beam losses at SIS100; ii) estimation of the BLM quench prevention threshold via the correlation between the energy deposition inside the superconducting coils and the BLM active volume. A full spectrum of ion species and energies to be accelerated with SIS100 were considered in the simulations, showing a great sensitivity to the beam losses. An interesting finding of this study was that, for the same beam loss location, the quench prevention thresholds were almost identical for all ion species/energies including protons.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOY032
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THPOY033	SIS100 Availability and Machine Protection	4171
	C. Omet, H. Kisker, M.S. Mandakovic, D. Ondreka, P.J. Spiller, R.J. Steinhagen GSI, Darmstadt, Germany
	For the future FAIR driver accelerator, SIS100, a detailed System-FMEA (Failure Modes and Effects Analysis) according to IEC 61508 has been done. One the one hand, this has been done to identify possible shortcomings for machine protection and on the other hand to predict the machine's availabilty for beam on target. The methodology for the analysis and the main failure modes currently known for the machine and its environment are described in detail. An estimate of the total machine's availability is given.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOY033
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Paper

Title

Page

Technologies for Stabilizing the Dynamic Vacuum and Charge Related Beam Loss in Heavy Ion Synchrotrons

977

P.J. Spiller, L.H.J. Bozyk, C. Omet, I. Pongrac, St. Wilfert
GSI, Darmstadt, Germany

With increasing the intensities of heavy ion beams in synchrotrons, charge related beam loss become more and more significant. In order to reduce space charge forces and to minimize the incoherent tune spread, the charge state of heavy Ions shall be lowered. Thus the cross section for charge related beam loss is further enhanced. For the FAIR project, GSI has developed a number of different technologies to stabilize the dynamic residual gas pressure and thereby to minimize charge related beam loss at high intensity heavy ion operation. Technologies suitable for such issues are, dedicated lattice structures, cold and warm ion catchers, NEG coated and cryogenic magnet chambers and cryo-adsorption pumps.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY055

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THPMW019

Concept and Design of the Injection Kicker System for the FAIR SIS100 Synchrotron

3582

I.J. Petzenhauser, U. Blell, P.J. Spiller
GSI, Darmstadt, Germany
L.O. Baandrup, H. Bach, N. Hauge, K.F. Laurberg
Danfysik A/S, Taastrup, Denmark
G. Blokesch, M. Osemann
Ampegon PPT GmbH, Dortmund, Germany

The SIS100 synchrotron at GSI, Germany is designed for acceleration of protons and ions. For the injection into the synchrotron a kicker magnet system, which consists of 6 ferrite kicker magnet modules, installed in one vacuum tank with a required vacuum quality better than 10-9 Pa, will be needed. The magnetic field should be 118 mT in a 65 mm gap. These kicker magnet modules will be supplied with 6 separate pulser circuits. Each pulser has to produce a pulse current of up to 7 kA at a PFL (pulse forming line) voltage of 80kV at an impedance of 5.7 Ohm. The rise time has to be 130 ns and the variable pulse length is between 0.5 to 2.0 μs. The design concept for this kicker system from Ampegon PPT and DANFYSIK and the specific challenges will be described.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMW019

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THPMY040

Laser Cooling of Relativistic Highly Charged Ions at FAIR

3747

D.F.A. Winters, O. Boine-Frankenheim, L. Eidam, T. Kühl, P.J. Spiller, T. Stöhlker
GSI, Darmstadt, Germany
T. Beck, G. Birkl, D. Kiefer, T. Walther
TU Darmstadt, Darmstadt, Germany
M.H. Bussmann, U. Schramm, M. Siebold
Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiation Physics, Dresden, Germany
V. Hannen, D. Winzen
Westfälische Wilhelms-Universität Münster, Institut für Kernphysik, Münster, Germany
M. Löser
HZDR, Dresden, Germany
X. Ma, W.Q. Wen
IMP/CAS, Lanzhou, People's Republic of China

An overview of recent laser cooling activities with relativistic heavy ion beams at the ESR (GSI, Darmstadt, Germany) and the CSRe (IMP, Lanzhou, China) storage rings will be presented. Some of the latest results will be shown and new developments concerning xuv-detector systems and cw and pulsed laser systems will be addressed. Finally, plans for laser cooling (& spectroscopy) at the future facility FAIR in Darmstadt will be presented, focusing on the SIS100.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMY040

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THPOY032

The Dual Use of Beam Loss Monitors at FAIR-SIS100: General Diagnostics and Quench Prevention of Superconducting Magnets

4167

S. Damjanovic, P. Kowina, C. Omet, M. Sapinski, M. Schwickert, P.J. Spiller
GSI, Darmstadt, Germany

In view of the planned coverage of the FAIR-SIS100 synchrotron with beam loss monitors (BLMs), FLUKA studies were performed aiming at two goals: i) evaluation of the sensitivity of the LHC-IC type detectors to the potential beam losses at SIS100; ii) estimation of the BLM quench prevention threshold via the correlation between the energy deposition inside the superconducting coils and the BLM active volume. A full spectrum of ion species and energies to be accelerated with SIS100 were considered in the simulations, showing a great sensitivity to the beam losses. An interesting finding of this study was that, for the same beam loss location, the quench prevention thresholds were almost identical for all ion species/energies including protons.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOY032

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

THPOY033

SIS100 Availability and Machine Protection

4171

C. Omet, H. Kisker, M.S. Mandakovic, D. Ondreka, P.J. Spiller, R.J. Steinhagen
GSI, Darmstadt, Germany

For the future FAIR driver accelerator, SIS100, a detailed System-FMEA (Failure Modes and Effects Analysis) according to IEC 61508 has been done. One the one hand, this has been done to identify possible shortcomings for machine protection and on the other hand to predict the machine's availabilty for beam on target. The methodology for the analysis and the main failure modes currently known for the machine and its environment are described in detail. An estimate of the total machine's availability is given.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOY033

Export •

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