Holger Podlech
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View article: Automation of pulse identification at J-PARC<sup>1</sup>
Automation of pulse identification at J-PARC<sup>1</sup> Open
At J-PARC, the 500 μs long macro-pulses generated by the LINAC are separated into intermediate-pulses to synchronize it to the frequency of the Rapid-Cycling-Synchrotron (RCS). To secure a stable operation, the knowledge of position and le…
View article: High Current Accelerator-driven Neutron Sources - The HBS project for a next generation neutron facility
High Current Accelerator-driven Neutron Sources - The HBS project for a next generation neutron facility Open
Background Research with neutrons usually relies on fission-based research reactors or neutron spallation sources to provide neutron beams for scientific and industrial applications. In recent years a novel way for the production of brilli…
View article: High Current Accelerator-driven Neutron Sources - The HBS project for a next generation neutron facility
High Current Accelerator-driven Neutron Sources - The HBS project for a next generation neutron facility Open
Background Research with neutrons is usually related to the use of fission-based research reactors or neutron spallation sources to offer neutron beams for science and industry. In recent years a novel way for the production of brilliant c…
View article: High Current Accelerator-driven Neutron Sources - The HBS project for a next generation neutron facility
High Current Accelerator-driven Neutron Sources - The HBS project for a next generation neutron facility Open
Background Research with neutrons is usually related to the use of fission-based research reactors or neutron spallation sources to offer neutron beams for science and industry. In recent years a novel way for the production of brilliant c…
View article: Alternating phase focusing beam dynamics for drift tube linacs
Alternating phase focusing beam dynamics for drift tube linacs Open
In contrast to conventional E-mode resonance accelerators, H-mode DTLs provide for compact linac sections and have been established as highly efficient resonators during the last decades. Thus, H-mode structures are widely applied for heav…
View article: Tuning methods for multigap drift tube linacs
Tuning methods for multigap drift tube linacs Open
Multigap cavities are used extensively in linear accelerators to achieve velocities up to a few percent of the speed of light, driving nuclear physics research around the world. Unlike for single-gap structures, there is no closed-form exp…
View article: RF-Acceleration Studies for the HBS-Linac Applying Alternating Phase Focusing Concepts
RF-Acceleration Studies for the HBS-Linac Applying Alternating Phase Focusing Concepts Open
The recent layout of the Jülich High Brilliance Neutron Source (HBS) driver linac is based on short crossbar H-mode (CH) cavities operated at a fixed synchronous phase. In the last decades the computing power for the development of linacs,…
View article: Advanced basic layout of the HElmholtz LInear Accelerator for cw heavy ion beams at GSI
Advanced basic layout of the HElmholtz LInear Accelerator for cw heavy ion beams at GSI Open
The design and construction of continuous wave (cw) high intensity linacs is a crucial goal of worldwide accelerator technology development. The standalone sc heavy ion linac HELIAC (HElmholtz LInear ACcelerator) is a common project of GSI…
View article: Beam Dynamics Studies for the Target Beamlines of the High Brilliance Neutron Source
Beam Dynamics Studies for the Target Beamlines of the High Brilliance Neutron Source Open
The High Brilliance Neutron Source (HBS) belongs to the class of High Current Accelerator based Neutron Sources (Hi-CANS). The driver Linac for the HBS must be able to reliably accelerate a 100 mA proton beam to an energy of 70 MeV [2, 1, …
View article: The High Brilliance neutron Source (HBS): A project for a next generation neutron research facility
The High Brilliance neutron Source (HBS): A project for a next generation neutron research facility Open
The High Brilliance neutron Source (HBS) is a project for a next generation neutron research facility, based on new concepts and recent technological advancements. As elementary processes it uses neither fission nor spallation, but instead…
View article: An Alternating Phase Focusing injector for heavy ion acceleration
An Alternating Phase Focusing injector for heavy ion acceleration Open
The new heavy ion superconducting continuous wave HElmholtz LInear ACcelerator (HELIAC) is under construction at GSI. A normal conducting injector, comprising an ECR ion source, an RFQ and a DTL, is recently in development. The new Interdi…
View article: A dynamic collimation and alignment system for the Helmholtz linear accelerator
A dynamic collimation and alignment system for the Helmholtz linear accelerator Open
The upcoming commissioning of the superconducting (SC) continuous wave Helmholtz linear accelerators first of series cryomodule is going to demand precise alignment of the four internal SC cavities and two SC solenoids. For optimal results…
View article: MYRRHA-MINERVA Injector Status and Commissioning
MYRRHA-MINERVA Injector Status and Commissioning Open
The MYRRHA project at SCK•CEN, Belgium, aims at coupling a 600 MeV proton accelerator to a subcritical fission core operating at a thermal power of 60 MW. The nominal proton beam for this ADS has an intensity of 4 mA and is delivered in a …
View article: Frequency jump using 704.4 MHz radio-frequency quadrupole and cross-bar <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>H</mml:mi></mml:math>-type drift tube linear accelerators
Frequency jump using 704.4 MHz radio-frequency quadrupole and cross-bar -type drift tube linear accelerators Open
A large-scale proton or H^{−} accelerator often requires a jump in radio frequency, typically in the beam velocity range of β=0.4–0.6. The MYRRHA linac has two frequency jumps: one at β≅0.2 and another one in the typical beam velocity rang…
View article: Thermal Analysis of a Compact Split-Coaxial CW RFQ for the IsoDAR RFQ-DIP
Thermal Analysis of a Compact Split-Coaxial CW RFQ for the IsoDAR RFQ-DIP Open
The RFQ direct injection project (RFQ-DIP) for the neutrino physics experiment IsoDAR aims at an efficient injection of a high-current H²⁺ beam into the dedicated 60 MeV driver cyclotron. Therefore, it is intended to use a compact 32.8 MHz…
View article: Technical Design of an RFQ Injector for the IsoDAR Cyclotron
Technical Design of an RFQ Injector for the IsoDAR Cyclotron Open
For the IsoDAR (Isotope Decay-At-Rest) experiment, a high intensity (10 mA CW) primary proton beam is needed. To generate this beam, H²⁺ is accelerated in a cyclotron and stripped into protons after extraction. An RFQ, partially embedded i…
View article: Minerva (MYRRHA Phase 1) RFQ Beam Commissioning
Minerva (MYRRHA Phase 1) RFQ Beam Commissioning Open
The MYRRHA project aims at coupling a 600 MeV proton accelerator to a subcritical fission core operating at a thermal power of 60 MW. The nominal proton beam for this ADS has an intensity of 4 mA and is delivered in a quasi-CW mode. Phase …
View article: LILac Energy Upgrade to 13 MeV
LILac Energy Upgrade to 13 MeV Open
In the frame of the NICA (Nuclotron-based Ion Collider fAcility) ion collider upgrade a new light ion LINAC for protons and ions will be built in collaboration between JINR and BEVATECH GmbH. While ions with a mass-to-charge ratio up to 3 …
View article: Status of the Electron Lens for Space Charge Compensation in SIS18
Status of the Electron Lens for Space Charge Compensation in SIS18 Open
At GSI a project has been initiated to investigate the option of space charge compensation (SCC) by use of an electron lens in order to overcome space charge (SC) limits in the synchrotrons SIS18 and SIS100 for the Facility for Antiproton …
View article: Acceleration of He⁺ Beams for Injection Into NICA Booster During its First Run
Acceleration of He⁺ Beams for Injection Into NICA Booster During its First Run Open
Heavy Ion Linear Accelerator (HILAC) is designed to accelerate the heavy ions with ratio A/Z=6.25 produced by ESIS ion source up to the 3.2 MeV for the injection into superconducting synchrotron (SC) Booster. HILAC was commissioned in 2018…
View article: Longitudinal phase space reconstruction for a heavy ion accelerator
Longitudinal phase space reconstruction for a heavy ion accelerator Open
At the GSI Helmholtzzentrum für Schwerionenforschung (GSI) in Darmstadt, Germany, a prototype cryomodule (advanced demonstrator) for the superconducting (SC) continuous wave (CW) Helmholtz Linear Accelerator (HELIAC) is under construction.…
View article: Erratum: Realizing long radio-frequency quadrupole accelerators with multiple shorter and independent cavities [Phys. Rev. Accel. Beams <b>23</b>, 042003 (2020)]
Erratum: Realizing long radio-frequency quadrupole accelerators with multiple shorter and independent cavities [Phys. Rev. Accel. Beams <b>23</b>, 042003 (2020)] Open
Received 1 September 2020DOI:https://doi.org/10.1103/PhysRevAccelBeams.23.109901Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work mus…
View article: Sustainable neutrons for today and tomorrow—The Jülich High Brilliance neutron Source project
Sustainable neutrons for today and tomorrow—The Jülich High Brilliance neutron Source project Open
Neutrons are an essential tool in science and research for probing the structure and dynamics of matter from the mesoscale to the picoscale and from seconds to femtoseconds.To release neutrons for ...
View article: Experiments with stable confined electron columns
Experiments with stable confined electron columns Open
Gabor Lenses were invented for focusing ion beams by the electric field of a confined electron column. In synchrotrons spontaneously occurring electron clouds have an influence on the beam dynamics. Instabilities of single or multi bunches…
View article: First acceleration of heavy ion beams with a superconducting continuous wave HIM/GSI CW-linac
First acceleration of heavy ion beams with a superconducting continuous wave HIM/GSI CW-linac Open
In the future a new superconducting (sc) continuous wave (cw) high intensity heavy ion Linac should provide ion beams with a max. beam energy above the coulomb barrier for the Super Heavy Element (SHE) program at GSI Helmholtzzentrum für S…
View article: Beam commissioning of the demonstrator setup for the superconducting continuous wave HIM/GSI-Linac
Beam commissioning of the demonstrator setup for the superconducting continuous wave HIM/GSI-Linac Open
During successful beam commissioning of the superconducting 15-gap Crossbar H-mode (CH) cavity at GSI Helmholtzzentrum für Schwerionenforschung heavy ions up to the design beam energy have been accelerated. The design acceleration gain of …
View article: Advanced Beam Dynamics Design for the Superconducting Heavy Ion Accelerator HELIAC
Advanced Beam Dynamics Design for the Superconducting Heavy Ion Accelerator HELIAC Open
The standalone superconducting (SC) continuous wave (CW) heavy ion linac HELIAC (HElmholtz LInear ACcelerator) is a common project of GSI and HIM under key support of IAP Frankfurt and in collaboration with Moscow Engineering Physics Insti…
View article: Further RF measurements on the superconducting 217 MHz CH demonstrator cavity for a CW linac at GSI
Further RF measurements on the superconducting 217 MHz CH demonstrator cavity for a CW linac at GSI Open
Recently, the first section of a superconducting (SC) continuous wave (CW) linac has been extensively tested with heavy ion beam from the GSI High Charge State Injector (HLI). During this testing phase, the reliable operability of 217 MHz …
View article: Reconstruction of the longitudinal phase portrait for the SC CW heavy ion HELIAC at GSI
Reconstruction of the longitudinal phase portrait for the SC CW heavy ion HELIAC at GSI Open
At the GSI Helmholtzzentrum für Schwerionenforschung (GSI) in Darmstadt, Germany, the HElmholtz LInear Accelerator (HELIAC) is currently under construction. The HELIAC comprises superconducting multigap Crossbar H-mode (SC CH) cavities. Th…