0000000000204915

AUTHOR

Jonas Pforr

showing 3 related works from this author

Emittance measurements with optical transition radiation at the S-DALINAC

2020

Abstract A new emittance measurement system has been installed at the superconducting, recirculating electron accelerator S-DALINAC. It is based on the quadrupole-scan technique and beam profile measurements with optical transition radiation. A first demonstration of this setup has been conducted as part of the beam-based alignment of an SRF cavity. The corresponding emittance measurement is described here, and the following data evaluation is discussed.

PhysicsSuperconductivityNuclear and High Energy Physics010308 nuclear & particles physicsbusiness.industrySystem of measurementOptical transitionParticle acceleratorRadiation01 natural scienceslaw.inventionOpticslaw0103 physical sciencesPhysics::Accelerator PhysicsThermal emittance010306 general physicsbusinessInstrumentationBeam (structure)Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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First operation of the superconducting Darmstadt linear electron accelerator as an energy recovery linac

2020

The superconducting Darmstadt linear electron accelerator (S-DALINAC) has been operated as an energy recovery linac (ERL) for the first time. The S-DALINAC is a recirculating superconducting radio-frequency (SRF) accelerator and had been upgraded with an additional recirculation beamline. It features a path length adjustment system that provides a freedom of choice of 360\ifmmode^\circ\else\textdegree\fi{} for the rf phase difference between the electron bunches recirculated through the new beamline and the phase of the accelerating ${\mathrm{TM}}_{010}$ mode of the oscillating electromagnetic field in the SRF cavities of the accelerator. A choice of around 180\ifmmode^\circ\else\textdegree…

Electromagnetic fieldSuperconductivityPhysicsNuclear and High Energy PhysicsPhysics and Astronomy (miscellaneous)Phase (waves)Particle acceleratorSurfaces and InterfacesKinetic energylaw.inventionNuclear physicsBeamlinelawlcsh:QC770-798Physics::Accelerator Physicslcsh:Nuclear and particle physics. Atomic energy. RadioactivityEnergy (signal processing)Beam (structure)Physical Review Accelerators and Beams
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Beam-based alignment of SRF cavities in an electron injector linac

2018

Proper alignment of accelerating cavities is an important issue concerning beam quality of linear rf-accelerators. In particular, SRF cavities of injector linacs using high accelerating gradients on low-velocity electron beams can deteriorate the beam quality significantly when not aligned sufficiently. On the other hand, knowing the exact position of every cavity after several cool-down cycles of a cryomodule can be difficult depending on the particular module design. We will report on operational experience on the SC injector of the Darmstadt superconducting recirculating linac and ERL (S-DALINAC) showing unwanted effects on beam dynamics and beam quality due to cavity misalignment, such…

PhysicsHistory010308 nuclear & particles physicsbusiness.industryElectronInjector01 natural sciencesLinear particle acceleratorComputer Science ApplicationsEducationlaw.inventionOpticslaw0103 physical sciencesPhysics::Accelerator PhysicsThermal emittance010306 general physicsbusinessBeam (structure)Journal of Physics: Conference Series
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