| title: |
Initial commissioning results of the Next Generation Photoinjector
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| format: |
conference procceeding
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conference:
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7th Advanced Accelerator Concepts Workshop
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year:
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1997
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11 authors:
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D. T. Palmer
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X. J. Wang
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R. H. Miller
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M. Babzien
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Ben-Zvi, I.
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C. Pellegrini
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Sheehan, J.
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Skaritka, J.
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H. Winick
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M. Woodle
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V. Yakimenko
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abstract:
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The BNL/SLAC/UCLA symmetrized 1.6 Cell S-band emittance-compensated photoinjector has been installed at the Brookhaven Accelerator Test Facility (ATF). The commissioning results and performance of the photocathode injector are presented. This emittance-compensated photoinjector consists of the symmetrized BNL/SLAC/UCLA 1.6 cell S-band photocathode radio-frequency (RF) gun and a single solenoidal magnet for transverse emittance compensation. The highest acceleration field achieved on the cathode is 150 MV/m, and the normal operating field is 130 MV/m. The quantum efficiency of the copper cathode was measured to be 4.5*10/sup -5/. The transverse emittance and bunch length of the photoelectron beam were measured. The optimized RMS normalized emittance for a charge of 300 pC is 0.7 pi mm-mrad. The bunch length dependency of photoelectron beam on the RF gun phase and acceleration fields were experimentally investigated. (11 References).
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keywords:
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