Emittance control and RF bunch compression in the NSRRC photoinjector
The high-brightness photoinjector being constructed at the National Synchrotron Radiation Research Center is for testing new accelerator and light-source concepts. It is the so-called split photoinjector configuration in which a short solenoid magnet is used for emittance compensation. The UV-drive...
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| Veröffentlicht in: | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2011-05, Vol.637 (1), p.S91-S94 |
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| container_title | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment |
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| creator | Lau, W.K. Hung, S.B. Lee, A.P. Chou, C.S. Huang, N.Y. |
| description | The high-brightness photoinjector being constructed at the National Synchrotron Radiation Research Center is for testing new accelerator and light-source concepts. It is the so-called split photoinjector configuration in which a short solenoid magnet is used for emittance compensation. The UV-drive laser pulses are also shaped to produce uniform cylindrical bunches for further reduction of beam emittance. However, limited by the available power from our microwave power system, the nominal accelerating gradient in the S-band booster linac is set at 18
MV/m. A simulation study with PARMELA shows that the linac operating at this gradient fails to freeze the electron beam emittance at low value. A background solenoid magnetic field is applied for beam emittance control in the linac during acceleration. A satisfactory result that meets our preliminary goal has been achieved with the solenoid magnetic field strength at 0.1
T. RF bunch compression as a means to achieve the required beam brightness for high-gain free-electron laser experiments is also examined. The reduction of bunch length to a few hundred femtoseconds can be obtained. |
| doi_str_mv | 10.1016/j.nima.2010.02.030 |
| format | Article |
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MV/m. A simulation study with PARMELA shows that the linac operating at this gradient fails to freeze the electron beam emittance at low value. A background solenoid magnetic field is applied for beam emittance control in the linac during acceleration. A satisfactory result that meets our preliminary goal has been achieved with the solenoid magnetic field strength at 0.1
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MV/m. A simulation study with PARMELA shows that the linac operating at this gradient fails to freeze the electron beam emittance at low value. A background solenoid magnetic field is applied for beam emittance control in the linac during acceleration. A satisfactory result that meets our preliminary goal has been achieved with the solenoid magnetic field strength at 0.1
T. RF bunch compression as a means to achieve the required beam brightness for high-gain free-electron laser experiments is also examined. The reduction of bunch length to a few hundred femtoseconds can be obtained.</description><subject>Accelerators</subject><subject>Beams (radiation)</subject><subject>Bunch compression</subject><subject>Emittance</subject><subject>Magnetic fields</subject><subject>Nuclear power generation</subject><subject>Photoinjector</subject><subject>Radio frequencies</subject><subject>Reduction</subject><subject>Solenoids</subject><issn>0168-9002</issn><issn>1872-9576</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp9kE9LxDAUxIMouK5-AU-5eWp9SfonBS-y7KqwKFQ9h2yasiltUpOs4Lc3y3r2XQaGmQfzQ-iWQE6AVPdDbs0kcwrJAJoDgzO0ILymWVPW1TlapBDPGgB6ia5CGCBdU_MFWq8nE6O0SmPlbPRuxNJ2uN3g3cGqfTKn2esQjLPYWBz3Gr--t-0Kz3sXnbGDVtH5a3TRyzHomz9dos_N-mP1nG3fnl5Wj9tMUc5iRkjJCsUrQouyLCouO9VwUhDesVIz6JlmfVNSxmpQO6Y5q1UHUPe0lEBq2bMlujv9nb37OugQxWSC0uMorXaHIHhT0aIiRZWS9JRU3oXgdS9mnwj5H0FAHJGJQRyRiSMyAVQkZKn0cCrptOHbaC-CMjqx6YxPO0XnzH_1X3Ntcxk</recordid><startdate>20110501</startdate><enddate>20110501</enddate><creator>Lau, W.K.</creator><creator>Hung, S.B.</creator><creator>Lee, A.P.</creator><creator>Chou, C.S.</creator><creator>Huang, N.Y.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20110501</creationdate><title>Emittance control and RF bunch compression in the NSRRC photoinjector</title><author>Lau, W.K. ; Hung, S.B. ; Lee, A.P. ; Chou, C.S. ; Huang, N.Y.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c283t-11534c8612455468adc981418d35e30f3e3f9523370cb3e837cd007f25a017af3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Accelerators</topic><topic>Beams (radiation)</topic><topic>Bunch compression</topic><topic>Emittance</topic><topic>Magnetic fields</topic><topic>Nuclear power generation</topic><topic>Photoinjector</topic><topic>Radio frequencies</topic><topic>Reduction</topic><topic>Solenoids</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lau, W.K.</creatorcontrib><creatorcontrib>Hung, S.B.</creatorcontrib><creatorcontrib>Lee, A.P.</creatorcontrib><creatorcontrib>Chou, C.S.</creatorcontrib><creatorcontrib>Huang, N.Y.</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lau, W.K.</au><au>Hung, S.B.</au><au>Lee, A.P.</au><au>Chou, C.S.</au><au>Huang, N.Y.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Emittance control and RF bunch compression in the NSRRC photoinjector</atitle><jtitle>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment</jtitle><date>2011-05-01</date><risdate>2011</risdate><volume>637</volume><issue>1</issue><spage>S91</spage><epage>S94</epage><pages>S91-S94</pages><issn>0168-9002</issn><eissn>1872-9576</eissn><abstract>The high-brightness photoinjector being constructed at the National Synchrotron Radiation Research Center is for testing new accelerator and light-source concepts. It is the so-called split photoinjector configuration in which a short solenoid magnet is used for emittance compensation. The UV-drive laser pulses are also shaped to produce uniform cylindrical bunches for further reduction of beam emittance. However, limited by the available power from our microwave power system, the nominal accelerating gradient in the S-band booster linac is set at 18
MV/m. A simulation study with PARMELA shows that the linac operating at this gradient fails to freeze the electron beam emittance at low value. A background solenoid magnetic field is applied for beam emittance control in the linac during acceleration. A satisfactory result that meets our preliminary goal has been achieved with the solenoid magnetic field strength at 0.1
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| ispartof | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2011-05, Vol.637 (1), p.S91-S94 |
| issn | 0168-9002 1872-9576 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_896246146 |
| source | Access via ScienceDirect (Elsevier) |
| subjects | Accelerators Beams (radiation) Bunch compression Emittance Magnetic fields Nuclear power generation Photoinjector Radio frequencies Reduction Solenoids |
| title | Emittance control and RF bunch compression in the NSRRC photoinjector |
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