Simulation of a cascaded longitudinal space charge amplifier for coherent radiation generation
Abstract
Longitudinal space charge (LSC) effects are generally considered as harmful in free-electron lasers as they can seed unfavorable energy modulations that can result in density modulations with associated emittance dilution. It was pointed out, however, that such \micro-bunching instabilities" could be potentially useful to support the generation of broadband coherent radiation. Therefore there has been an increasing interest in devising accelerator beam lines capable of controlling LSC induced density modulations. In the present paper we augment these previous investigations by combining a grid-less space charge algorithm with the popular particle-tracking program elegant. This high-fidelity model of the space charge is used to benchmark conventional LSC models. We then employ the developed model to optimize the performance of a cascaded longitudinal space charge amplifier using beam parameters comparable to the ones achievable at Fermilab Accelerator Science & Technology (FAST) facility currently under commissioning at Fermilab.
- Authors:
-
- Northern Illinois Univ., DeKalb, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1226330
- Alternate Identifier(s):
- OSTI ID: 1359638
- Report Number(s):
- FERMILAB-PUB-15-426-APC
Journal ID: ISSN 0168-9002; arXiv eprint number arXiv:1510.00679
- Grant/Contract Number:
- AC02-07CH11359; SC0011831
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
- Additional Journal Information:
- Journal Volume: 819; Journal Issue: C; Journal ID: ISSN 0168-9002
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; linear accelerator; electron beams; space charge; micro-bunching instabilities; N-body tree algorithm
Citation Formats
Halavanau, A., and Piot, P. Simulation of a cascaded longitudinal space charge amplifier for coherent radiation generation. United States: N. p., 2016.
Web. doi:10.1016/j.nima.2016.03.002.
Halavanau, A., & Piot, P. Simulation of a cascaded longitudinal space charge amplifier for coherent radiation generation. United States. https://doi.org/10.1016/j.nima.2016.03.002
Halavanau, A., and Piot, P. Thu .
"Simulation of a cascaded longitudinal space charge amplifier for coherent radiation generation". United States. https://doi.org/10.1016/j.nima.2016.03.002. https://www.osti.gov/servlets/purl/1226330.
@article{osti_1226330,
title = {Simulation of a cascaded longitudinal space charge amplifier for coherent radiation generation},
author = {Halavanau, A. and Piot, P.},
abstractNote = {Longitudinal space charge (LSC) effects are generally considered as harmful in free-electron lasers as they can seed unfavorable energy modulations that can result in density modulations with associated emittance dilution. It was pointed out, however, that such \micro-bunching instabilities" could be potentially useful to support the generation of broadband coherent radiation. Therefore there has been an increasing interest in devising accelerator beam lines capable of controlling LSC induced density modulations. In the present paper we augment these previous investigations by combining a grid-less space charge algorithm with the popular particle-tracking program elegant. This high-fidelity model of the space charge is used to benchmark conventional LSC models. We then employ the developed model to optimize the performance of a cascaded longitudinal space charge amplifier using beam parameters comparable to the ones achievable at Fermilab Accelerator Science & Technology (FAST) facility currently under commissioning at Fermilab.},
doi = {10.1016/j.nima.2016.03.002},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 819,
place = {United States},
year = {Thu Mar 03 00:00:00 EST 2016},
month = {Thu Mar 03 00:00:00 EST 2016}
}
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