Performance of a first generation X-band photoelectron rf gun
Building more compact accelerators to deliver high brightness electron beams for the generation of high flux, highly coherent radiation is a priority for the photon science community. A relatively straightforward reduction in footprint can be achieved by using high-gradient X-band (11.4 GHz) rf tech...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2016-05-01
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| Series: | Physical Review Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevAccelBeams.19.053401 |
| _version_ | 1811228194631581696 |
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| author | C. Limborg-Deprey C. Adolphsen D. McCormick M. Dunning K. Jobe H. Li T. Raubenheimer A. Vrielink T. Vecchione F. Wang S. Weathersby |
| author_facet | C. Limborg-Deprey C. Adolphsen D. McCormick M. Dunning K. Jobe H. Li T. Raubenheimer A. Vrielink T. Vecchione F. Wang S. Weathersby |
| author_sort | C. Limborg-Deprey |
| collection | DOAJ |
| description | Building more compact accelerators to deliver high brightness electron beams for the generation of high flux, highly coherent radiation is a priority for the photon science community. A relatively straightforward reduction in footprint can be achieved by using high-gradient X-band (11.4 GHz) rf technology. To this end, an X-band injector consisting of a 5.5 cell rf gun and a 1-m long linac has been commissioned at SLAC. It delivers an 85 MeV electron beam with peak brightness somewhat better than that achieved in S-band photoinjectors, such as the one developed for the Linac Coherent Light Source (LCLS). The X-band rf gun operates with up to a 200 MV/m peak field on the cathode, and has been used to produce bunches of a few pC to 1.2 nC in charge. Notably, bunch lengths as short as 120 fs rms have been measured for charges of 5 pC (∼3×10^{7} electrons), and normalized transverse emittances as small as 0.22 mm-mrad have been measured for this same charge level. Bunch lengths as short as 400 (250) fs rms have been achieved for electron bunches of 100 (20) pC with transverse normalized emittances of 0.7 (0.35) mm-mrad. We report on the performance and the lessons learned from the operation and optimization of this first generation X-band gun. |
| first_indexed | 2024-04-12T09:54:11Z |
| format | Article |
| id | doaj.art-6e1ae8dfcfba479589dd62e90ef6afa5 |
| institution | Directory Open Access Journal |
| issn | 2469-9888 |
| language | English |
| last_indexed | 2024-04-12T09:54:11Z |
| publishDate | 2016-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Accelerators and Beams |
| spelling | doaj.art-6e1ae8dfcfba479589dd62e90ef6afa52022-12-22T03:37:44ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882016-05-0119505340110.1103/PhysRevAccelBeams.19.053401Performance of a first generation X-band photoelectron rf gunC. Limborg-DepreyC. AdolphsenD. McCormickM. DunningK. JobeH. LiT. RaubenheimerA. VrielinkT. VecchioneF. WangS. WeathersbyBuilding more compact accelerators to deliver high brightness electron beams for the generation of high flux, highly coherent radiation is a priority for the photon science community. A relatively straightforward reduction in footprint can be achieved by using high-gradient X-band (11.4 GHz) rf technology. To this end, an X-band injector consisting of a 5.5 cell rf gun and a 1-m long linac has been commissioned at SLAC. It delivers an 85 MeV electron beam with peak brightness somewhat better than that achieved in S-band photoinjectors, such as the one developed for the Linac Coherent Light Source (LCLS). The X-band rf gun operates with up to a 200 MV/m peak field on the cathode, and has been used to produce bunches of a few pC to 1.2 nC in charge. Notably, bunch lengths as short as 120 fs rms have been measured for charges of 5 pC (∼3×10^{7} electrons), and normalized transverse emittances as small as 0.22 mm-mrad have been measured for this same charge level. Bunch lengths as short as 400 (250) fs rms have been achieved for electron bunches of 100 (20) pC with transverse normalized emittances of 0.7 (0.35) mm-mrad. We report on the performance and the lessons learned from the operation and optimization of this first generation X-band gun.http://doi.org/10.1103/PhysRevAccelBeams.19.053401 |
| spellingShingle | C. Limborg-Deprey C. Adolphsen D. McCormick M. Dunning K. Jobe H. Li T. Raubenheimer A. Vrielink T. Vecchione F. Wang S. Weathersby Performance of a first generation X-band photoelectron rf gun Physical Review Accelerators and Beams |
| title | Performance of a first generation X-band photoelectron rf gun |
| title_full | Performance of a first generation X-band photoelectron rf gun |
| title_fullStr | Performance of a first generation X-band photoelectron rf gun |
| title_full_unstemmed | Performance of a first generation X-band photoelectron rf gun |
| title_short | Performance of a first generation X-band photoelectron rf gun |
| title_sort | performance of a first generation x band photoelectron rf gun |
| url | http://doi.org/10.1103/PhysRevAccelBeams.19.053401 |
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