EPE Association: EPE 2011 - DS1m: Topic 21: Energy conversion and conditioning technologies in physics research and related applications

EPE 2011 - DS1m: Topic 21: Energy conversion and conditioning technologies in physics research and related applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2011 ECCE Europe - Conference > EPE 2011 - Topic 21: Energy conversion and conditioning technologies in physics research and related applications > EPE 2011 - DS1m: Topic 21: Energy conversion and conditioning technologies in physics research and related applications

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   A Capacitor Charging Power Supply for Repetitive Pulsed Power Systems
By Alireza NAMI, Tatsurou SAKAMOTO , Hidenori AKIYAMA [View]
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Abstract: This paper proposes a new combined voltage and current control technique for a non-isolated DC-DCconverter to meet the output requirements of capacitor charging power supplies for pulsed powerapplications. Low input voltage, simplicity of structure and control, over voltage and currentprotections are the salient features of the proposed topology.

   Improved Control Strategy for Active Bouncers used in Klystron Modulators
By Sebastian MAESTRI, Rogelio GARCIA RETEGUI, Benedetti MARIO, Nicolas WASSINGER, Davide AGUGLIA, David NISBET [View]
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Abstract: This paper introduces a closed-loop control system for klystron modulators. The system isbased on the discharge of a capacitor into a step-up voltage transformer and an active bouncerimplemented with a multiphase buck converter. In order to obtain a constant Klystron voltageat the flat-top, the active bouncer must compensate both the capacitor discharge and the pulsetransformer characteristic. The proposed control includes an inner voltage regulation loop thatcontrols the active bouncer output voltage and an outer one that controls the klystron voltage.The primary side current and main capacitor voltage are included in the regulation loops tosimplify the controllers. Simulations demonstrate that the strategy adopted allows to obtaina precision better than 0:1\% on a 110 kV klystron. Experimental tests have shown that themultiphase converter is able to track a high dynamics reference even under variable outputvoltage conditions.

   Power Distribution Architectures and Converters for High Energy Physics: Application to LHC Experiments
By Marco RIVA, Federico BELLONI [View]
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Abstract: The planned increase of instrumentation sensitivity in the ATLAS experiment of the Large HadronCollider (LHC), at CERN, calls for a thorough re-design of the power distribution architecture. Thepaper describes the implementation of the main DC-DC converter for the LAr electromagneticcalorimeter. Design consideration and experimental results are provided.

   POWER SUPPLIES FOR THE DIAGNOSTIC AND MAIN BEAM DUMPS OF FERMI@ELETTRA
By Roberto VISINTINI, Emanuele MASSARELLI, Antonio FACCIO, Michele SEGATO, Maik HOHMANN, Frank SCHUMANN [View]
[Download]

Abstract: FERMI@Elettra is the new “4th-generation” light source, starting its operations at the Elettra Synchrotron Light Laboratory in Trieste, Italy. About 400 magnet power supplies (PS) ranging from 5 A to 750 A are used. All PS are remotely controlled via Ethernet. This paper describes the PS for the “Diagnostic Beam Dump” and the “Main Beam Dump” dipoles and the high performance achieved.

EPE 2011 - DS1m: Topic 21: Energy conversion and conditioning technologies in physics research and related applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2011 ECCE Europe - Conference > EPE 2011 - Topic 21: Energy conversion and conditioning technologies in physics research and related applications > EPE 2011 - DS1m: Topic 21: Energy conversion and conditioning technologies in physics research and related applications
	[return to parent folder]

	A Capacitor Charging Power Supply for Repetitive Pulsed Power Systems By Alireza NAMI, Tatsurou SAKAMOTO , Hidenori AKIYAMA	[View] [Download]
Abstract: This paper proposes a new combined voltage and current control technique for a non-isolated DC-DCconverter to meet the output requirements of capacitor charging power supplies for pulsed powerapplications. Low input voltage, simplicity of structure and control, over voltage and currentprotections are the salient features of the proposed topology.

	Improved Control Strategy for Active Bouncers used in Klystron Modulators By Sebastian MAESTRI, Rogelio GARCIA RETEGUI, Benedetti MARIO, Nicolas WASSINGER, Davide AGUGLIA, David NISBET	[View] [Download]
Abstract: This paper introduces a closed-loop control system for klystron modulators. The system isbased on the discharge of a capacitor into a step-up voltage transformer and an active bouncerimplemented with a multiphase buck converter. In order to obtain a constant Klystron voltageat the flat-top, the active bouncer must compensate both the capacitor discharge and the pulsetransformer characteristic. The proposed control includes an inner voltage regulation loop thatcontrols the active bouncer output voltage and an outer one that controls the klystron voltage.The primary side current and main capacitor voltage are included in the regulation loops tosimplify the controllers. Simulations demonstrate that the strategy adopted allows to obtaina precision better than 0:1\% on a 110 kV klystron. Experimental tests have shown that themultiphase converter is able to track a high dynamics reference even under variable outputvoltage conditions.

	Power Distribution Architectures and Converters for High Energy Physics: Application to LHC Experiments By Marco RIVA, Federico BELLONI	[View] [Download]
Abstract: The planned increase of instrumentation sensitivity in the ATLAS experiment of the Large HadronCollider (LHC), at CERN, calls for a thorough re-design of the power distribution architecture. Thepaper describes the implementation of the main DC-DC converter for the LAr electromagneticcalorimeter. Design consideration and experimental results are provided.

	POWER SUPPLIES FOR THE DIAGNOSTIC AND MAIN BEAM DUMPS OF FERMI@ELETTRA By Roberto VISINTINI, Emanuele MASSARELLI, Antonio FACCIO, Michele SEGATO, Maik HOHMANN, Frank SCHUMANN	[View] [Download]
Abstract: FERMI@Elettra is the new “4th-generation” light source, starting its operations at the Elettra Synchrotron Light Laboratory in Trieste, Italy. About 400 magnet power supplies (PS) ranging from 5 A to 750 A are used. All PS are remotely controlled via Ethernet. This paper describes the PS for the “Diagnostic Beam Dump” and the “Main Beam Dump” dipoles and the high performance achieved.