Very High Energy Gain at the Neptune Inverse Free Electron Laser Experiment
We report the observation of energy gain in excess of 20 MeV at the Inverse Free Electron Laser Accelerator experiment at the Neptune Laboratory at UCLA. A 14.5 MeV electron beam is injected in an undulator strongly tapered in period and field amplitude. The IFEL driver is a CO2 10.6 mum laser with...
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| Veröffentlicht in: | AIP conference proceedings 2004-01, Vol.737 (1), p.160-170 |
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| creator | Musumeci, P Tochitsky, S Ya Boucher, S Doyuran, A England, R J Joshi, C Pellegrini, C Ralph, J Rosenzweig, J B Sung, C Tolmachev, S Travish, G Varfolomeev, A Varfolomeev Jr, A Yarovoi, T Yoder, R |
| description | We report the observation of energy gain in excess of 20 MeV at the Inverse Free Electron Laser Accelerator experiment at the Neptune Laboratory at UCLA. A 14.5 MeV electron beam is injected in an undulator strongly tapered in period and field amplitude. The IFEL driver is a CO2 10.6 mum laser with power larger than 400 GW. The Rayleigh range of the laser, ~ 1.8 cm, is much shorter than the undulator length so that the interaction is diffraction dominated. A few per cent of the injected particles are trapped in a stable accelerating bucket. Electrons with energies up to 35 MeV are measured by a magnetic spectrometer. Three-dimensional simulations, in good agreement with the measured electron energy spectrum, indicate that most of the acceleration occurs in the first 25 cm of the undulator, corresponding to an energy gradient larger than 70 MeV/m. The measured energy spectrum also indicates that higher harmonic Inverse Free Electron Laser interaction takes place in the second section of the undulator. |
| doi_str_mv | 10.1063/1.1842541 |
| format | Article |
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A 14.5 MeV electron beam is injected in an undulator strongly tapered in period and field amplitude. The IFEL driver is a CO2 10.6 mum laser with power larger than 400 GW. The Rayleigh range of the laser, ~ 1.8 cm, is much shorter than the undulator length so that the interaction is diffraction dominated. A few per cent of the injected particles are trapped in a stable accelerating bucket. Electrons with energies up to 35 MeV are measured by a magnetic spectrometer. Three-dimensional simulations, in good agreement with the measured electron energy spectrum, indicate that most of the acceleration occurs in the first 25 cm of the undulator, corresponding to an energy gradient larger than 70 MeV/m. 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A 14.5 MeV electron beam is injected in an undulator strongly tapered in period and field amplitude. The IFEL driver is a CO2 10.6 mum laser with power larger than 400 GW. The Rayleigh range of the laser, ~ 1.8 cm, is much shorter than the undulator length so that the interaction is diffraction dominated. A few per cent of the injected particles are trapped in a stable accelerating bucket. Electrons with energies up to 35 MeV are measured by a magnetic spectrometer. Three-dimensional simulations, in good agreement with the measured electron energy spectrum, indicate that most of the acceleration occurs in the first 25 cm of the undulator, corresponding to an energy gradient larger than 70 MeV/m. The measured energy spectrum also indicates that higher harmonic Inverse Free Electron Laser interaction takes place in the second section of the undulator.</description><subject>ACCELERATORS</subject><subject>AMPLITUDES</subject><subject>BEAM INJECTION</subject><subject>CARBON DIOXIDE LASERS</subject><subject>DIFFRACTION</subject><subject>ELECTRON BEAMS</subject><subject>ENERGY SPECTRA</subject><subject>FREE ELECTRON LASERS</subject><subject>MAGNETIC SPECTROMETERS</subject><subject>MEV RANGE 10-100</subject><subject>PARTICLE ACCELERATORS</subject><subject>SIMULATION</subject><subject>THREE-DIMENSIONAL CALCULATIONS</subject><subject>TRAPPING</subject><subject>UCLA</subject><issn>0094-243X</issn><issn>1551-7616</issn><isbn>9780735402201</isbn><isbn>0735402205</isbn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNotkEtLAzEUhYMPsNYu_AcBwd3Um9ckWUqZPrDoRsXdME3vtCPTTE1Ssf_ekbo6i_Nx-DiE3DIYM8jFAxszI7mS7IwMmFIs0znLz8nIagNaKAmcA7sgAwArMy7FxxW5jvETgFutzYA8vWM40nmz2dLCY9gc6axqPK0STVukz7hPB4904b8xRKTTgEiLFl0KnafLKmKgxc8eQ7NDn27IZV21EUf_OSRv0-J1Ms-WL7PF5HGZdUzKlFlgykKFGgWgMNCLcrPmTGjkEoGtajR_HRcObG8v89W6VisDite1dUwMyd1pt4upKaNrErqt67zvvUoOuVIcoKfuT9Q-dF8HjKncNdFh21Yeu0Ms-wN6E6HEL9GKXAI</recordid><startdate>20040101</startdate><enddate>20040101</enddate><creator>Musumeci, P</creator><creator>Tochitsky, S Ya</creator><creator>Boucher, S</creator><creator>Doyuran, A</creator><creator>England, R J</creator><creator>Joshi, C</creator><creator>Pellegrini, C</creator><creator>Ralph, J</creator><creator>Rosenzweig, J B</creator><creator>Sung, C</creator><creator>Tolmachev, S</creator><creator>Travish, G</creator><creator>Varfolomeev, A</creator><creator>Varfolomeev Jr, A</creator><creator>Yarovoi, T</creator><creator>Yoder, R</creator><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20040101</creationdate><title>Very High Energy Gain at the Neptune Inverse Free Electron Laser Experiment</title><author>Musumeci, P ; Tochitsky, S Ya ; Boucher, S ; Doyuran, A ; England, R J ; Joshi, C ; Pellegrini, C ; Ralph, J ; Rosenzweig, J B ; Sung, C ; Tolmachev, S ; Travish, G ; Varfolomeev, A ; Varfolomeev Jr, A ; Yarovoi, T ; Yoder, R</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-o144t-901590ae7e30e38080728d2137e24e01bfe87e3023c0920146bdf5b8052ff9c13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>ACCELERATORS</topic><topic>AMPLITUDES</topic><topic>BEAM INJECTION</topic><topic>CARBON DIOXIDE LASERS</topic><topic>DIFFRACTION</topic><topic>ELECTRON BEAMS</topic><topic>ENERGY SPECTRA</topic><topic>FREE ELECTRON LASERS</topic><topic>MAGNETIC SPECTROMETERS</topic><topic>MEV RANGE 10-100</topic><topic>PARTICLE ACCELERATORS</topic><topic>SIMULATION</topic><topic>THREE-DIMENSIONAL CALCULATIONS</topic><topic>TRAPPING</topic><topic>UCLA</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Musumeci, P</creatorcontrib><creatorcontrib>Tochitsky, S Ya</creatorcontrib><creatorcontrib>Boucher, S</creatorcontrib><creatorcontrib>Doyuran, A</creatorcontrib><creatorcontrib>England, R J</creatorcontrib><creatorcontrib>Joshi, C</creatorcontrib><creatorcontrib>Pellegrini, C</creatorcontrib><creatorcontrib>Ralph, J</creatorcontrib><creatorcontrib>Rosenzweig, J B</creatorcontrib><creatorcontrib>Sung, C</creatorcontrib><creatorcontrib>Tolmachev, S</creatorcontrib><creatorcontrib>Travish, G</creatorcontrib><creatorcontrib>Varfolomeev, A</creatorcontrib><creatorcontrib>Varfolomeev Jr, A</creatorcontrib><creatorcontrib>Yarovoi, T</creatorcontrib><creatorcontrib>Yoder, R</creatorcontrib><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>AIP conference proceedings</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Musumeci, P</au><au>Tochitsky, S Ya</au><au>Boucher, S</au><au>Doyuran, A</au><au>England, R J</au><au>Joshi, C</au><au>Pellegrini, C</au><au>Ralph, J</au><au>Rosenzweig, J B</au><au>Sung, C</au><au>Tolmachev, S</au><au>Travish, G</au><au>Varfolomeev, A</au><au>Varfolomeev Jr, A</au><au>Yarovoi, T</au><au>Yoder, R</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Very High Energy Gain at the Neptune Inverse Free Electron Laser Experiment</atitle><jtitle>AIP conference proceedings</jtitle><date>2004-01-01</date><risdate>2004</risdate><volume>737</volume><issue>1</issue><spage>160</spage><epage>170</epage><pages>160-170</pages><issn>0094-243X</issn><eissn>1551-7616</eissn><isbn>9780735402201</isbn><isbn>0735402205</isbn><abstract>We report the observation of energy gain in excess of 20 MeV at the Inverse Free Electron Laser Accelerator experiment at the Neptune Laboratory at UCLA. A 14.5 MeV electron beam is injected in an undulator strongly tapered in period and field amplitude. The IFEL driver is a CO2 10.6 mum laser with power larger than 400 GW. The Rayleigh range of the laser, ~ 1.8 cm, is much shorter than the undulator length so that the interaction is diffraction dominated. A few per cent of the injected particles are trapped in a stable accelerating bucket. Electrons with energies up to 35 MeV are measured by a magnetic spectrometer. Three-dimensional simulations, in good agreement with the measured electron energy spectrum, indicate that most of the acceleration occurs in the first 25 cm of the undulator, corresponding to an energy gradient larger than 70 MeV/m. The measured energy spectrum also indicates that higher harmonic Inverse Free Electron Laser interaction takes place in the second section of the undulator.</abstract><cop>United States</cop><doi>10.1063/1.1842541</doi><tpages>11</tpages></addata></record> |
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| subjects | ACCELERATORS AMPLITUDES BEAM INJECTION CARBON DIOXIDE LASERS DIFFRACTION ELECTRON BEAMS ENERGY SPECTRA FREE ELECTRON LASERS MAGNETIC SPECTROMETERS MEV RANGE 10-100 PARTICLE ACCELERATORS SIMULATION THREE-DIMENSIONAL CALCULATIONS TRAPPING UCLA |
| title | Very High Energy Gain at the Neptune Inverse Free Electron Laser Experiment |
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