Controlling beam trajectory and transport in a tapered helical undulator

Fisher, A.; Jin, J.; Musumeci, P.

doi:10.1107/S1600577524012463

Title: Controlling beam trajectory and transport in a tapered helical undulator

Journal Article · 11 February 2025 · Journal of Synchrotron Radiation (Online)

DOI: https://doi.org/10.1107/S1600577524012463 · OSTI ID:2515670

Fisher, A.;

;

In this paper we present a detailed discussion of the helical undulator system developed for high extraction efficiency experiments in the tapered-enhanced stimulated superradiant amplification regime. The design is based on permanent magnet technology and comprises two Halbach arrays orthogonally oriented and shifted by 90° with respect to each other. When used in low energy beamlines for THz generation, the electron beam trajectory and transport are particularly sensitive to the undulator off-axis fields so that it becomes important to complement on-axis field measurements with analysis and tuning of the higher-order field components. Here we describe how the pulsed wire measurement technique can be effectively used to retrieve on- and off-axis magnetic field characteristics of the undulator. A simple two-dipole model is developed to guide the final adjustments to the permanent magnet positions along the array to tune the quadrupole and sextupole components of the field.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0009914; SC0017102; SC0018559

OSTI ID:: 2515670

Journal Information:: Journal of Synchrotron Radiation (Online), Journal Name: Journal of Synchrotron Radiation (Online) Journal Issue: 2 Vol. 32; ISSN 1600-5775; ISSN JSYRES

Publisher:: International Union of Crystallography (IUCr)Copyright Statement

Country of Publication:: Denmark

Language:: English

References (19)

Optical properties of helical undulators Ciocci, F.; Dattoli, G.; Giannessi, L. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 63, Issue 3 https://doi.org/10.1016/0168-583X(92)95115-8	journal	February 1992
Limitations on the use of the pulsed-wire field measuring technique Warren, R. W. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 272, Issue 1-2 https://doi.org/10.1016/0168-9002(88)90233-1	journal	October 1988
Wire method for magnetic field measurements in long undulators Varfolomeev, A. A.; Bouzouloukov, Yu. P.; Ivanchenkov, S. N. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 359, Issue 1-2 https://doi.org/10.1016/0168-9002(94)01359-4	journal	May 1995
Further development of the pulsed wire technique for magnetic field and focusing strength measurements in long undulators Osmanov, N. S.; Tolmachev, S. V.; Varfolomeev, A. A. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 407, Issue 1-3 https://doi.org/10.1016/S0168-9002(98)00066-7	journal	April 1998
DSP methods for correcting dispersion and pulse width effects during pulsed wire measurements Kasa, Matthew Measurement, Vol. 122 https://doi.org/10.1016/j.measurement.2018.03.025	journal	July 2018
A dispersion and pulse width correction algorithm for the pulsed wire method Arbelaez, D.; Wilks, T.; Madur, A. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 716 https://doi.org/10.1016/j.nima.2013.02.042	journal	July 2013
Tapered helical undulator system for high efficiency energy extraction from a high brightness electron beam Park, Y.; Agustsson, R.; Berg, W. J. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 1028 https://doi.org/10.1016/j.nima.2022.166370	journal	April 2022
High-quality electron beams from a helical inverse free-electron laser accelerator Duris, J.; Musumeci, P.; Babzien, M. Nature Communications, Vol. 5, Issue 1 https://doi.org/10.1038/ncomms5928	journal	September 2014
Single-pass high-efficiency terahertz free-electron laser Fisher, A.; Park, Y.; Lenz, M. Nature Photonics, Vol. 16, Issue 6 https://doi.org/10.1038/s41566-022-00995-z	journal	May 2022
Permanent Magnet Undulators Halbach, K. Le Journal de Physique Colloques, Vol. 44, Issue C1 https://doi.org/10.1051/jphyscol:1983120	journal	February 1983
Interaction of Relativistic Particles and Free Electromagnetic Waves in the Presence of a Static Helical Magnet Palmer, Robert B. Journal of Applied Physics, Vol. 43, Issue 7 https://doi.org/10.1063/1.1661650	journal	July 1972
Tapering enhanced stimulated superradiant amplification Duris, J.; Murokh, A.; Musumeci, P. New Journal of Physics, Vol. 17, Issue 6 https://doi.org/10.1088/1367-2630/17/6/063036	journal	June 2015
High efficiency, multiterawatt x-ray free electron lasers Emma, C.; Fang, K.; Wu, J. Physical Review Accelerators and Beams, Vol. 19, Issue 2 https://doi.org/10.1103/PhysRevAccelBeams.19.020705	journal	February 2016
High Efficiency Energy Extraction from a Relativistic Electron Beam in a Strongly Tapered Undulator Sudar, N.; Musumeci, P.; Duris, J. Physical Review Letters, Vol. 117, Issue 17 https://doi.org/10.1103/PhysRevLett.117.174801	journal	October 2016
Observation of Stimulated Emission of Radiation by Relativistic Electrons in a Spatially Periodic Transverse Magnetic Field Elias, Luis R.; Fairbank, William M.; Madey, John M. J. Physical Review Letters, Vol. 36, Issue 13 https://doi.org/10.1103/PhysRevLett.36.717	journal	March 1976
A three-dimensional magnetostatics computer code for insertion devices Chubar, Oleg; Elleaume, Pascal; Chavanne, Joel Journal of Synchrotron Radiation, Vol. 5, Issue 3 https://doi.org/10.1107/S0909049597013502	journal	May 1998
Free-electron lasers with variable parameter wigglers Kroll, N.; Morton, P.; Rosenbluth, M. IEEE Journal of Quantum Electronics, Vol. 17, Issue 8 https://doi.org/10.1109/JQE.1981.1071285	journal	August 1981
Fabrication and Experimental Study of Prototype NdFeB Helical Undulators Balal, Nezah; Bamberg, Eberhard; Bratman, Vladimir L. IEEE Transactions on Electron Devices, Vol. 70, Issue 11 https://doi.org/10.1109/TED.2023.3315250	journal	November 2023
Electro-optic sampling based characterization of broad-band high efficiency THz-FEL Lenz, M.; Fisher, A.; Ody, A. Optics Express, Vol. 30, Issue 19, p. 33804 https://doi.org/10.1364/OE.467677	journal	August 2022

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