An electron gun for a sheet beam klystron
Calabazas Creek Research, Inc. is developing rectangular, gridded, thermionic, dispenser-cathode gun for sheet beam devices. The first application is expected to be klystrons for use in advanced particle accelerators and colliders. The current generation of accelerators typically use klystrons with...
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creator | Read, M.E. Miram, G. Ives, R.L. Ivanov, V. Krasnykh, A. |
description | Calabazas Creek Research, Inc. is developing rectangular, gridded, thermionic, dispenser-cathode gun for sheet beam devices. The first application is expected to be klystrons for use in advanced particle accelerators and colliders. The current generation of accelerators typically use klystrons with a cylindrical beam generated by a Pierce-type electron gun. As RF power is pushed to higher levels, space charge forces in the electron beam limit the amount of current that can be transmitted at a given voltage. The options are to increase the beam voltage leading to problems with X-ray shielding and modulator and power supply design, or to develop new techniques for lowering the space charge forces in the electron beam. The current program addresses issues related to beam formation at the emitter surface, design and implementation of shadow and control grids in a rectangular geometry, and is directed toward a robust, cost-effective, and reliable mechanical design. A prototype device will be developed that will operate at 415 kV, 250 A and be designed for an 80 MW, X-Band, sheet-beam klystron. The cathode will have 100 cm/sup 2/ of cathode area with an average cathode current loading of 2.5 A/cm/sup 2/. For short pulse formation, the use of a grid was chosen. We will report the electrostatic and beam optics design in both 2- and 3-D as well as a thermal-mechanical analysis of the cathode region. |
doi_str_mv | 10.1109/IVELEC.2002.999332 |
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The first application is expected to be klystrons for use in advanced particle accelerators and colliders. The current generation of accelerators typically use klystrons with a cylindrical beam generated by a Pierce-type electron gun. As RF power is pushed to higher levels, space charge forces in the electron beam limit the amount of current that can be transmitted at a given voltage. The options are to increase the beam voltage leading to problems with X-ray shielding and modulator and power supply design, or to develop new techniques for lowering the space charge forces in the electron beam. The current program addresses issues related to beam formation at the emitter surface, design and implementation of shadow and control grids in a rectangular geometry, and is directed toward a robust, cost-effective, and reliable mechanical design. A prototype device will be developed that will operate at 415 kV, 250 A and be designed for an 80 MW, X-Band, sheet-beam klystron. The cathode will have 100 cm/sup 2/ of cathode area with an average cathode current loading of 2.5 A/cm/sup 2/. For short pulse formation, the use of a grid was chosen. We will report the electrostatic and beam optics design in both 2- and 3-D as well as a thermal-mechanical analysis of the cathode region.</description><identifier>ISBN: 9780780372566</identifier><identifier>ISBN: 0780372565</identifier><identifier>DOI: 10.1109/IVELEC.2002.999332</identifier><language>eng</language><publisher>IEEE</publisher><subject>Cathodes ; Colliding beam accelerators ; Electron accelerators ; Electron beams ; Klystrons ; Linear particle accelerator ; Optical beams ; Particle accelerators ; Space charge ; Voltage</subject><ispartof>Third IEEE International Vacuum Electronics Conference (IEEE Cat. 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The current program addresses issues related to beam formation at the emitter surface, design and implementation of shadow and control grids in a rectangular geometry, and is directed toward a robust, cost-effective, and reliable mechanical design. A prototype device will be developed that will operate at 415 kV, 250 A and be designed for an 80 MW, X-Band, sheet-beam klystron. The cathode will have 100 cm/sup 2/ of cathode area with an average cathode current loading of 2.5 A/cm/sup 2/. For short pulse formation, the use of a grid was chosen. We will report the electrostatic and beam optics design in both 2- and 3-D as well as a thermal-mechanical analysis of the cathode region.</description><subject>Cathodes</subject><subject>Colliding beam accelerators</subject><subject>Electron accelerators</subject><subject>Electron beams</subject><subject>Klystrons</subject><subject>Linear particle accelerator</subject><subject>Optical beams</subject><subject>Particle accelerators</subject><subject>Space charge</subject><subject>Voltage</subject><isbn>9780780372566</isbn><isbn>0780372565</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2002</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotj01Lw0AURQdEUGr-QFezdZE4n28yyxKiFgLdqNvypvOmjaapZOKi_95KvVw4iwsHLmNLKSophX9af7Rd21RKCFV577VWN6zwrhaXaqcswB0rcv4UlxhjlXX37HE1chpoN0-nke9_Rp5OE0eeD0QzD4RH_jWc89_6wG4TDpmKfy7Y-3P71ryW3eZl3ay6spfWzSWQBxtEEhGUB1BknPRJRTQUpZSIgCkYHaneoam9ROeAAEKwTkehtF6w5dXbE9H2e-qPOJ231z_6F_lLP2o</recordid><startdate>2002</startdate><enddate>2002</enddate><creator>Read, M.E.</creator><creator>Miram, G.</creator><creator>Ives, R.L.</creator><creator>Ivanov, V.</creator><creator>Krasnykh, A.</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>2002</creationdate><title>An electron gun for a sheet beam klystron</title><author>Read, M.E. ; Miram, G. ; Ives, R.L. ; Ivanov, V. ; Krasnykh, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i157t-6e965b0f0d629662e4719f2da4ed111aa6afb43de8ca4891a776e66bb573d0233</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Cathodes</topic><topic>Colliding beam accelerators</topic><topic>Electron accelerators</topic><topic>Electron beams</topic><topic>Klystrons</topic><topic>Linear particle accelerator</topic><topic>Optical beams</topic><topic>Particle accelerators</topic><topic>Space charge</topic><topic>Voltage</topic><toplevel>online_resources</toplevel><creatorcontrib>Read, M.E.</creatorcontrib><creatorcontrib>Miram, G.</creatorcontrib><creatorcontrib>Ives, R.L.</creatorcontrib><creatorcontrib>Ivanov, V.</creatorcontrib><creatorcontrib>Krasnykh, A.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Read, M.E.</au><au>Miram, G.</au><au>Ives, R.L.</au><au>Ivanov, V.</au><au>Krasnykh, A.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>An electron gun for a sheet beam klystron</atitle><btitle>Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524)</btitle><stitle>IVELEC</stitle><date>2002</date><risdate>2002</risdate><spage>192</spage><epage>193</epage><pages>192-193</pages><isbn>9780780372566</isbn><isbn>0780372565</isbn><abstract>Calabazas Creek Research, Inc. is developing rectangular, gridded, thermionic, dispenser-cathode gun for sheet beam devices. The first application is expected to be klystrons for use in advanced particle accelerators and colliders. The current generation of accelerators typically use klystrons with a cylindrical beam generated by a Pierce-type electron gun. As RF power is pushed to higher levels, space charge forces in the electron beam limit the amount of current that can be transmitted at a given voltage. The options are to increase the beam voltage leading to problems with X-ray shielding and modulator and power supply design, or to develop new techniques for lowering the space charge forces in the electron beam. The current program addresses issues related to beam formation at the emitter surface, design and implementation of shadow and control grids in a rectangular geometry, and is directed toward a robust, cost-effective, and reliable mechanical design. A prototype device will be developed that will operate at 415 kV, 250 A and be designed for an 80 MW, X-Band, sheet-beam klystron. The cathode will have 100 cm/sup 2/ of cathode area with an average cathode current loading of 2.5 A/cm/sup 2/. For short pulse formation, the use of a grid was chosen. We will report the electrostatic and beam optics design in both 2- and 3-D as well as a thermal-mechanical analysis of the cathode region.</abstract><pub>IEEE</pub><doi>10.1109/IVELEC.2002.999332</doi><tpages>2</tpages></addata></record> |
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ispartof | Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524), 2002, p.192-193 |
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language | eng |
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source | IEEE Electronic Library (IEL) Conference Proceedings |
subjects | Cathodes Colliding beam accelerators Electron accelerators Electron beams Klystrons Linear particle accelerator Optical beams Particle accelerators Space charge Voltage |
title | An electron gun for a sheet beam klystron |
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