Finn Kohrell , Sam Barber , Kyle Jensen , Christopher Doss , Curtis Berger , Carl Schroeder , Eric Esarey , Florian Grüner , Jeroen van Tilborg
{"title":"激光脉冲光谱相位波动与LPA性能相关性的研究","authors":"Finn Kohrell , Sam Barber , Kyle Jensen , Christopher Doss , Curtis Berger , Carl Schroeder , Eric Esarey , Florian Grüner , Jeroen van Tilborg","doi":"10.1016/j.nima.2025.170267","DOIUrl":null,"url":null,"abstract":"<div><div>Successfully using electron bunches generated from Laser-Plasma Accelerators (LPAs) to drive reliable Free-Electron Lasers (FELs) requires exceptional stability of the parameters involved in the LPA interaction. On the BELLA Center’s Hundred Terawatt Undulator (HTU) System at Lawrence Berkeley National Laboratory (LBNL) we use a 100 Terawatt Ti:Sapph laser, capable of supplying 2.5 Joule, sub 40 fs pulses at 1 Hz on target, to produce 100 MeV, quasi-monoenergetic electron beams. As part of the effort to characterize and stabilize the laser pulses, a non-invasive on-shot spectral phase diagnostic was designed and commissioned on the HTU beamline. The results allow studying the direct correlations of spectral phase fluctuations to LPA and FEL parameters and chart a path towards further stabilization of the LPA process.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1073 ","pages":"Article 170267"},"PeriodicalIF":1.5000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigation of correlations between spectral phase fluctuations of the laser pulse and the performance of an LPA\",\"authors\":\"Finn Kohrell , Sam Barber , Kyle Jensen , Christopher Doss , Curtis Berger , Carl Schroeder , Eric Esarey , Florian Grüner , Jeroen van Tilborg\",\"doi\":\"10.1016/j.nima.2025.170267\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Successfully using electron bunches generated from Laser-Plasma Accelerators (LPAs) to drive reliable Free-Electron Lasers (FELs) requires exceptional stability of the parameters involved in the LPA interaction. On the BELLA Center’s Hundred Terawatt Undulator (HTU) System at Lawrence Berkeley National Laboratory (LBNL) we use a 100 Terawatt Ti:Sapph laser, capable of supplying 2.5 Joule, sub 40 fs pulses at 1 Hz on target, to produce 100 MeV, quasi-monoenergetic electron beams. As part of the effort to characterize and stabilize the laser pulses, a non-invasive on-shot spectral phase diagnostic was designed and commissioned on the HTU beamline. The results allow studying the direct correlations of spectral phase fluctuations to LPA and FEL parameters and chart a path towards further stabilization of the LPA process.</div></div>\",\"PeriodicalId\":19359,\"journal\":{\"name\":\"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment\",\"volume\":\"1073 \",\"pages\":\"Article 170267\"},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2025-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0168900225000683\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/2/4 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q3\",\"JCRName\":\"INSTRUMENTS & INSTRUMENTATION\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0168900225000683","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/4 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
Investigation of correlations between spectral phase fluctuations of the laser pulse and the performance of an LPA
Successfully using electron bunches generated from Laser-Plasma Accelerators (LPAs) to drive reliable Free-Electron Lasers (FELs) requires exceptional stability of the parameters involved in the LPA interaction. On the BELLA Center’s Hundred Terawatt Undulator (HTU) System at Lawrence Berkeley National Laboratory (LBNL) we use a 100 Terawatt Ti:Sapph laser, capable of supplying 2.5 Joule, sub 40 fs pulses at 1 Hz on target, to produce 100 MeV, quasi-monoenergetic electron beams. As part of the effort to characterize and stabilize the laser pulses, a non-invasive on-shot spectral phase diagnostic was designed and commissioned on the HTU beamline. The results allow studying the direct correlations of spectral phase fluctuations to LPA and FEL parameters and chart a path towards further stabilization of the LPA process.
期刊介绍：
Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section.
Theoretical as well as experimental papers are accepted.
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