Dieter Lens

Dieter Lens

Dr.-Ing. Dieter Lens

Dissertation: Modeling and Control of Longitudinal Single-Bunch Oscillations in Heavy-Ion Synchrotrons

+49 6151 16-2413
+49 6151 16-2507

Holzhofallee 38 (Besucheranschrift/ Visiting address)
64295 Darmstadt

Office: S4|20 301

Working area(s)

Publications

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Gruppiere nach: Publikationsjahr | Typ des Eintrags | Keine Gruppierung
Springe zu: 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009
Anzahl der Einträge: 59.

2019

Mihailescu-Stoica, Dinu ; Domont-Yankulova, Dilyana ; Klingbeil, Harald ; Lens, Dieter (2019):
Sensitivity Analysis of Feedforward Beam Current Compensation for Improved Beam Loading Robustness.
Melbourne, Australia, JACoW Publishing, In: Proceeeings of 10th International Partile Accelerator Conference (IPAC'19), 2019, May, 19-24, ISBN 978-3-95450-208-0,
DOI: 10.18429/JACoW-IPAC2019-THPRB022,
[Online-Edition: http://jacow.org/ipac2019/papers/thprb022.pdf],
[Konferenzveröffentlichung]

2018

Andreev, Aleksandr ; Lens, Dieter ; Schäfer, Stefan ; Zipfel, Bernhard ; Domont-Yankulova, Dilyana ; Klingbeil, Harald (2018):
Current status of the phase calibration of synchrotron RF reference signals.
[Report]

Hardieck, Martin ; Lens, Dieter ; Groß, Kerstin ; Klingbeil, Harald ; Kumm, Martin ; Zipf, Peter (2018):
Signal processing hardware for single-bunch manipulation.
[Report]

Reichardt, Benjamin ; Adamy, Jürgen ; Lens, Dieter ; Domont-Yankulova, Dilyana ; Klingbeil, Harald (2018):
Tuning rules for the digital filters of the SIS 100 longitudinal feedback system.
[Report]

Harzheim, Jens ; Domont-Yankulova, Dilyana ; Frey, Michael ; Groß, Kerstin ; Klingbeil, Harald ; Lens, Dieter (2018):
Low-Level RF for the ESR Barrier-Bucket System.
[Report]

Mihailescu-Stoica, Dinu ; Adamy, Jürgen ; Domont-Yankulova, Dilyana ; Klingbeil, Harald ; Lens, Dieter (2018):
Beamloading effects and their influence on cavity detuning in multi-cavity operation in SIS100.
In: GSI Scientific Report 2017, [Report]

Reichardt, Benjamin ; Lens, Dieter ; Klingbeil, Harald ; Domont-Yankulova, Dilyana (2018):
Tuning of 3-Tap Bandpass Filter during Acceleration for Longitudinal Beam-Stabilization at FAIR.
Vancouver, Canada, 29.04. - 4.05., [Konferenzveröffentlichung]

Harzheim, Jens ; Domont-Yankulova, Dilyana ; Groß, Kerstin ; Klingbeil, Harald ; Frey, Michael ; Lens, Dieter (2018):
The ESR Barrier-Bucket LLRF System – Design and First Results.
Vancouver, Canada, 29.04. - 4.05., [Konferenzveröffentlichung]

Mihailescu-Stoica, Dinu ; Domont-Yankulova, Dilyana ; Lens, Dieter ; Klingbeil, Harald (2018):
Cavity Impedance Reduction Strategies During Multi Cavity Operation in the SIS100 High Intensity Hadron Synchrotron.
Vancouver, Canada, 29.04. - 4.05., DOI: 10.18429,
[Konferenzveröffentlichung]

Harzheim, Jens ; Domont-Yankulova, Dilyana ; Frey, Michael ; Groß, Kerstin ; Klingbeil, Harald ; Lens, Dieter (2018):
Performance of the ESR Barrier Bucket LLRF System.
In: DPG-Frühjahrstagung, Würzburg, 19. - 23. März 2018, [Konferenzveröffentlichung]

2017

Lens, Dieter ; Klingbeil, Harald (2017):
A Versatile Toolchain for the Analysis of Synchrotron RF Systems' Data.
In: Low Level RF Workshop 2017, Barcelona, Spain, 16-19.10.2017, [Konferenzveröffentlichung]

Harzheim, Jens ; Domont-Yankulova, Dilyana ; Frey, Michael ; Groß, Kerstin ; Klingbeil, Harald ; Lens, Dieter (2017):
Status of the LLRF Development for the ESR Barrier-Bucket System.
In: Low Level RF Workshop 2017, Barcelona, Spain, 16-19.10.2017, [Konferenzveröffentlichung]

Andreev, Aleksandr ; Lens, Dieter ; Klingbeil, Harald (2017):
Phase calibration of synchrotron RF signals.
[Report]

Lens, Dieter ; Hardieck, Martin ; Groß, Kerstin ; Kumm, Martin ; Zipf, Peter (2017):
Signal processing development for the SIS100 bunch-by-bunch longitudinal feedback.
[Report]

Mihailescu-Stoica, Dinu ; Adamy, Jürgen ; Domont-Yankulova, Dilyana ; Klingbeil, Harald ; Lens, Dieter (2017):
Behavior of the planned RF feedback loops under beam loading during a reference SIS100 cycle.
[Report]

Reichardt, Benjamin ; Adamy, Jürgen ; Domont-Yankulova, Dilyana ; Groß, Kerstin ; Klingbeil, Harald ; Lens, Dieter (2017):
Feasibility of RF feedback control loops in heavy-ion synchrotrons by means of derivative estimation.
[Report]

Groß, Kerstin ; Domont-Yankulova, Dilyana ; Frey, Michael ; Harzheim, Jens ; Klingbeil, Harald ; Lens, Dieter (2017):
Status of LLRF for Barrier Bucket Operation at ESR.
In: Workshop on Advances in Electromagnetic Research, Hirschegg, Austria, 2.09-8.09, [Konferenzveröffentlichung]

Andreev, Aleksandr ; Lens, Dieter ; Klingbeil, Harald (2017):
Automated Phase Calibration of Reference Signals for Synchrotron RF Systems.
In: Workshop on Advances in Electromagnetic Research, Hirschegg, Austria, 2.09-8.09, [Konferenzveröffentlichung]

Reichardt, Benjamin ; Lens, Dieter ; Klingbeil, Harald ; Domont-Yankulova, Dilyana (2017):
Longitudinal Beam Stabilization at FAIR by Means of a Derivative Estimation.
Kopenhagen, Denmark, 14-19. May, [Konferenzveröffentlichung]

Andreev, Aleksandr ; Klingbeil, Harald ; Lens, Dieter (2017):
Phase Calibration of Synchrotron RF Signals.
Kopenhagen, Denmark, 14-19. May, [Konferenzveröffentlichung]

Klingbeil, Harald ; Balß, Robert ; Frey, Michael ; Hülsmann, Peter ; Klaus, Alexander ; König, Hans Günter ; Laier, Ulrich ; Lens, Dieter ; Ningel, Klaus-Peter (2017):
Status of the SIS100 RF Systems.
Kopenhagen, Denmark, 14-19. May, [Konferenzveröffentlichung]

Mihailescu-Stoica, Dinu ; Domont-Yankulova, Dilyana ; Lens, Dieter ; Klingbeil, Harald (2017):
On the Impact of Empty Buckets on the Ferrite Cavity Control Loop Dynamics in high Intensity Hadron Synchrotrons.
Kopenhagen, Denmark, 14.-19. May, [Konferenzveröffentlichung]

2016

Reichardt, Benjamin ; Mihailescu-Stoica, Dinu ; Adamy, Jürgen ; Domont-Yankulova, Dilyana ; Klingbeil, Harald ; Lens, Dieter (2016):
Design and tuning of digital filters for RF feedback loops in heavy-ion synchrotrons.
[Report]

Andreev, Aleksandr ; Lens, Dieter ; Klingbeil, Harald (2016):
Phase calibration strategies for synchrotron RF signals.
[Report]

Andreev, Aleksandr ; Klingbeil, Harald ; Lens, Dieter (2016):
Phase calibration strategies for synchrotron RF signals.
In: DPG - Frühjahrstagung, Darmstadt, 14-18.03.2016, [Konferenzveröffentlichung]

2015

Groß, Kerstin ; Hartel, Uta ; Klingbeil, Harald ; Laier, Ulrich ; Lens, Dieter ; Ningel, Klaus-Peter ; Schäfer, Stefan ; Zipfel, Bernhard (2015):
Verification of the longitudinal feedback topology in SIS18.
[Report]

Lens, Dieter ; Hartel, Uta ; Klingbeil, Harald ; Zipfel, Bernhard ; Groß, Kerstin ; Adamy, Jürgen ; Reichardt, Benjamin ; Kumm, M. ; Möller, Konrad ; Zipf, P. (2015):
Progress in damping of longitudinal beam oscillations during acceleration.
[Report]

Groß, Kerstin ; Hartel, Uta ; Klingbeil, Harald ; Laier, Ulrich ; Lens, Dieter ; Ningel, Klaus-Peter ; Schäfer, Stefan ; Zipfel, Bernhard (2015):
Bunch-by-Bunch Longitudinal RF Feedback for Beam Stabilization at FAIR.
Richmond, Virginia, USA, In: International Particle Accelerator Conference (IPAC2015), Richmond, Virginia, USA, In: MOPHA021, [Online-Edition: https://jacowfs.jlab.org/conf/y15/ipac15/prepress/MOPHA021.P...],
[Konferenzveröffentlichung]

Frey, Michael ; Balß, Robert ; Christoph, Calina ; Disser, Oliver ; Fleischmann, Gerhard ; Groß, Kerstin ; Hartel, Uta ; Hülsmann, Peter ; Jatta, Sandro ; Klaus, Alexander ; Klingbeil, Harald ; König, Hans Günter ; Laier, Ulrich ; Lens, Dieter ; Mondry, Darius ; Ningel, Klaus-Peter ; Richter, Helmut ; Schäfer, Stefan ; Thielmann, Christof ; Winnefeld, Thomas ; Zipfel, Bernhard (2015):
Status of the Ring RF Systems for FAIR.
Richmond, Virginia, USA, In: International Particle Accelerator Conference (IPAC2015), Richmond, Virginia, USA, In: WEPMA018, [Online-Edition: https://jacowfs.jlab.org/conf/y15/ipac15/prepress/WEPMA018.P...],
[Konferenzveröffentlichung]

2014

Grieser, Jochen ; Adamy, Jürgen ; Ferrand, Thibault ; Groß, Kerstin ; Hartel, Uta ; Klingbeil, Harald ; Laier, Ulrich ; Lens, Dieter ; Ningel, Klaus-Peter ; Schäfer, Stefan ; Zipfel, Bernhard (2014):
A digital beam-phase control system for a heavy-ion synchrotron with a dual-harmonic cavity system.
In: IEEE Transactions on Nuclear Science, S. 3584-3591, 61, (6), [Artikel]

Grieser, Jochen ; Hartel, Uta ; Klingbeil, Harald ; Laier, Ulrich ; Lens, Dieter ; Ningel, Klaus-Peter ; Schäfer, Stefan ; Zipfel, Bernhard (2014):
Beam Phase Feedback for Dual-Harmonic Operation of RF Cavity Systems.
[Report]

Faulwasser, Timm ; Lens, Dieter ; Kellett, Christopher M. (2014):
Predictive control for longitudinal beam dynamics in heavy ion synchrotrons.
In: IEEE Conference on Control Applications (CCA), Antibes, France, [Konferenzveröffentlichung]

Klingbeil, Harald ; Laier, Ulrich ; Lens, Dieter (2014):
Theoretical Foundations of Synchrotron and Storage Ring RF Systems (Particle Acceleration and Detection).
Springer, ISBN 978-3319071879,
[Buch]

Lens, Dieter ; Faulwasser, Timm ; Kelett, Christopher M. (2014):
Ansätze zur modellprädiktiven Regelung der longitudinalen Strahldynamik in Synchrotrons.
In: GMA Fachausschuss 1.40, Salzburg, Austria, [Konferenzveröffentlichung]

Zipfel, Bernhard ; Laier, Ulrich ; Ningel, Klaus-Peter ; Schäfer, Stefan ; Thielmann, Christof ; Hartel, Uta ; Lens, Dieter ; Klingbeil, Harald (2014):
Generation of RF frequency and phase references on the FAIR site.
In: International Particle Accelerator Conference (IPAC2014), Dresden, Germany, [Konferenzveröffentlichung]

Faulwasser, Timm ; Lens, Dieter ; Kellett, Christopher M. (2014):
Offset-free output feedback predictive control for longitudinal beam dynamics in heavy ion synchrotrons.
In: Australian Control Conference (AuCC), Canberra, Australia, [Konferenzveröffentlichung]

Möller, Konrad ; Kumm, Martin ; Zipf, Peter ; Groß, Kerstin ; Lens, Dieter ; Klingbeil, Harald (2014):
FPGA based tunable digital filtering for closed loop RF control in synchrotrons.
In: GSI Scientific Report 2013, [Report]

Groß, Kerstin ; Klingbeil, Harald ; Lens, Dieter (2014):
Impact of simplified stationary cavity beam loading on the longitudinal feedback system for SIS100.
In: International Particle Accelerator Conference (IPAC2014), Dresden, Germany, [Konferenzveröffentlichung]

2013

Lens, Dieter (2013):
Ein Finite-Differenzen Ansatz zur Reglersynthese.
In: GMA Fachausschuss 1.40 "Theoretische Verfahren der Regelungstechnik", Salzburg, Österreich, 16.-18. Sep. 2013, [Konferenzveröffentlichung]

Grieser, Jochen ; Bug, Daniel ; Lens, Dieter ; Klingbeil, Harald ; Adamy, Jürgen (2013):
Comparison of Filter Designs for a Digital Beam-Phase Feedback System in a Heavy-Ion Synchrotron.
In: Proceedings of the IEEE Mediterranean Conference on Control and Automation, In: IEEE Mediterranean Conference on Control and Automation, Platanias-Chania, Greece, 25.-28. June 2013, [Konferenzveröffentlichung]

Hartel, Uta ; Klingbeil, Harald ; Laier, Ulrich ; Ningel, Klaus-Peter ; Schäfer, Stefan ; Zipfel, Bernhard ; Grieser, Jochen ; Lens, Dieter (2013):
Precise verification of phase and amplitude calibration by means of a debunching experiment in SIS18.
In: Proceedings of the 4th International Particle Accelerator Conference, In: 4th International Particle Accelerator Conference, Shanghai, China, 12.-17. May 2013, [Konferenzveröffentlichung]

Groß, Kerstin ; Lens, Dieter (2013):
Modeling longitudinal bunched beam dynamics in hadron synchrotrons using scaled Fourier-Hermite expansions.
In: Proceedings of the 4th International Particle Accelerator Conference, In: 4th International Particle Accelerator Conference, Shanghai, China, 12.-17. May 2013, [Online-Edition: http://accelconf.web.cern.ch/AccelConf/IPAC2013/papers/wepea...],
[Konferenzveröffentlichung]

Grieser, Jochen ; Lens, Dieter ; Hartel, Uta ; Klingbeil, Harald ; Laier, Ulrich ; Ningel, Klaus-Peter ; Schäfer, Stefan ; Zipfel, Bernhard (2013):
A digital beam-phase control system for a heavy-ion synchrotron with a double-harmonic cavity system.
In: Proceedings of the 4th International Particle Accelerator Conference, In: 4th International Particle Accelerator Conference, Shanghai, China, 12.-17. May 2013, [Konferenzveröffentlichung]

Lens, Dieter ; Klingbeil, Harald (2013):
Stability of longitudinal bunch length feedback for heavy-ion synchrotrons.
In: Phys. Rev. ST Accel. Beams, S. 032801, 16, (3), [Artikel]

Hartel, Uta ; Grieser, Jochen ; Lens, Dieter ; Klaus, Alexander ; Klingbeil, Harald ; Laier, Ulrich ; Ningel, Klaus-Peter ; Schäfer, Stefan ; Zipfel, Bernhard (2013):
Verification of the RF system calibration by means of a debunching experiment in SIS18.
In: GSI Scientific Report 2012, [Report]

Groß, K. ; Lens, Dieter (2013):
Modeling Longitudinal Bunched Beam Dynamics in Hadron Synchrotrons Using Scaled Fourier-Hermite Expansions.
In: Proceedings of the 4th International Particle Accelerator Conference, [Konferenzveröffentlichung]

2012

Grieser, Jochen ; Lens, Dieter ; Klingbeil, Harald ; Adamy, Jürgen (2012):
A Method to Obtain the Frequency of the Longitudinal Dipole Oscillation for Modeling and Control in Synchrotrons with Single or Double Harmonic RF Systems.
In: Proceedings of the International Particle Accelerator Conference 2012, In: International Particle Accelerator Conference 2012, New Orleans, Louisiana, USA, 21.05.2012-25.05.2012, [Konferenzveröffentlichung]

Lens, Dieter (2012):
Modeling and Control of Longitudinal Single-Bunch Oscillations in Heavy-Ion Synchrotrons.
Düsseldorf, VDI Verlag, TU Darmstadt, In: Fortschritt-Berichte VDI : Reihe 8, Meß-, Steuerungs- und Regelungstechnik, ISBN 978-3-18-520908-6,
[Dissertation]

Lens, Dieter (2012):
Modeling and Control of Longitudinal Single-Bunch Oscillations in Heavy-Ion Synchrotrons.
Darmstadt, TU Darmstadt, [Online-Edition: urn:nbn:de:tuda-tuprints-29886],
[Buch]

Lens, Dieter ; Adamy, Jürgen ; Groß, Kerstin ; Klingbeil, Harald (2012):
Control theory for RF feedback and longitudinal beam stability.
In: GSI Scientific Report 2011, [Report]

2011

Groß, Kerstin ; Lens, Dieter ; Klingbeil, Harald (2011):
Modeling Longitudinal Beam Dynamics by Combining Fourier Coefficients and Moments.
In: Low-Level Radio Frequency Workshop, DESY, Hamburg, 17-20 Oktober 2011, [Online-Edition: https://indico.desy.de/getFile.py/access?contribId=158&sessi...],
[Konferenzveröffentlichung]

Lens, Dieter ; Klingbeil, Harald (2011):
RF Feedback Performance for Bunch Length Oscillations in Synchrotrons.
In: Workshop on Advances in Electromagnetic Research, Riezlern, Österreich, 20.-26. August 2011, [Konferenzveröffentlichung]

Lens, Dieter ; Grieser, Jochen ; Klingbeil, Harald (2011):
Longitudinal Closed-Loop Beam Control in Heavy Ion Synchrotrons: Simulation Methods and Results.
In: International Conference on Simulation Technology, Stuttgart, 14.-17. Juni 2011, [Konferenzveröffentlichung]

2010

Klingbeil, Harald ; Lens, Dieter ; Mehler, Monika ; Zipfel, Bernhard (2010):
Modeling Longitudinal Oscillations of Bunched Beams in Synchrotrons.
In: ArXiv:1011.3957v1 [physics.acc-ph], [Artikel]

Lens, Dieter ; Klingbeil, Harald ; Gußner, Thomas ; Popescu, Andreea ; Groß, Kerstin (2010):
Damping of longitudinal modes in heavy-ion synchrotrons by RF-feedback.
In: 2010 IEEE Multi-Conference on Systems and Control, Yokohama, Japan, 8.-10. September 2010, [Konferenzveröffentlichung]

Lens, Dieter ; Adamy, Jürgen ; Klingbeil, Harald (2010):
Modellierung und Regelung von HF-Systemen in Schwerionensynchrotrons.
In: 44. Regelungstechnisches Kolloquium, Boppard, 2010, [Konferenzveröffentlichung]

2009

Lens, Dieter ; Hülsmann, P. ; Klingbeil, Harald (2009):
Beam Loading Effects on the RF Control Loops of a Double-Harmonic Cavity System for FAIR.
Vancouver, Canada, In: Proceedings of the 2009 Particle Accelerator Conference, [Konferenzveröffentlichung]

Lens, Dieter ; Klingbeil, Harald ; Adamy, Jürgen (2009):
Analysis of Several RF Control Loops using Control Theory Methods.
In: GSI Scientific Report 2008, [Report]

Lens, Dieter ; Hülsmann, Peter ; Klingbeil, Harald (2009):
Beam Loading Effects on the RF Control Loops of a Double-Harmonic Cavity System for FAIR.
In: Proceedings of the 2009 Particle Accelerator Conference, [Konferenzveröffentlichung]

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