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FREE ELECTRON LASERS AND OTHER ADVANCED SOURCES OF LIGHT: Scientific Research Opportunities APPENDIX C REPRESENTATIVE SYNCHROTRON RADIATION SOURCES Note that data are presented for 0.1% bandwidth from the source. Realizing this level of resolution at the experiment would generally require an optical system (monochromators, filters, etc.) that would reduce the power at the sample by a factor of ten or more. Lawrence Berkeley Laboratory, Advanced Light Source (ALS) Reference LBL PUB-643 rev. 2, 1989 “An ALS Handbook” Energy 1.5 GeV Electron beam Current 400 mA Average 1.6 mA per bunch Timing Characteristics RF system is 500 MHz tµ = 35 ps 328 RF buckets/turn, 250 nominally filled τµ = 2 ns - 0.66 µs Emittance Characteristics εh = 10 nm-rad εv = 1 nm-rad Source: U5 undulator Argonne National Laboratory, Advanced Photon Source (APS) Reference ANL-88-9, 1988 “Characteristics of the 7-GeV APS” ANL/APS/TB-3, 1993 “Undulator A Char. & Specs.” Energy 7 GeV Positron beam Current 100 mA Average 5 mA per bunch Timing Characteristics RF system is 352.96 MHz tµ = 119 ps 1248 RF buckets/turn, 1-60 nominally filled τµ = 2.8 ns - 3.54 µs Emittance Characteristics εh = 7 nm-rad εv = 0.7 nm-rad Source: UA undulator Note: Material for this appendix was supplied courtesy of Erik Johnson, Brookhaven National Laboratory.
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FREE ELECTRON LASERS AND OTHER ADVANCED SOURCES OF LIGHT: Scientific Research Opportunities Brookhaven National Laboratory, National Synchrotron Light Source (NSLS) VUV Ring Reference BNL-47034, 1991 “Flux and Brightness Calculations for Various Synchrotron Radiation Sources” Energy 0.75 GeV Electron beam Current 800 mA Average 114.3 mA per bunch Timing Characteristics RF system is 52.88 MHz tµ = 588 ps 9 RF buckets/turn, 1-7 nominally filled τµ = 18.9 −170.2 ns Emittance Characteristics εh = 138 nm-rad εv = 4 nm-rad Source: UV bending magnet; U5 undulator; U 13/UA undulator Brookhaven National Laboratory, National Synchrotron Light Source (NSLS) X-ray Ring Reference BNL-47034, 1991 “Flux and Brightness Calculations for Various Synchrotron Radiation Sources” Energy 2.5 GeV Electron beam Current 250 mA Average 10 mA per bunch Timing Characteristics RF system is 52.88 MHz tµ = 588 ps 30 RF buckets/turn, 1-25 nominally filled τµ = 18.9 − 567 ns Emittance Characteristics εh = 138 nm-rad εv = 4 nm-rad Source: X-ray bending magnet; X21/25 wigglers; X1 undulator; X17 superconducting wiggler
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