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E166 Collaboration About 45+2 members from 16+1 institutions from all three regions (Asia, Europe, the Americas, and Daresbury) About 45+2 members from.

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Presentation on theme: "E166 Collaboration About 45+2 members from 16+1 institutions from all three regions (Asia, Europe, the Americas, and Daresbury) About 45+2 members from."— Presentation transcript:

1 E166 Collaboration About 45+2 members from 16+1 institutions from all three regions (Asia, Europe, the Americas, and Daresbury) About 45+2 members from 16+1 institutions from all three regions (Asia, Europe, the Americas, and Daresbury) John Sheppard, Kirk McDonald (co-spokesmen) John Sheppard, Kirk McDonald (co-spokesmen) E166: Polarized Positrons for Future Linear Colliders Kirk T. McDonald & John C. Sheppard, Co-spokespeople

2 2 Overview of E166 Demonstration experiment for production of polarized positrons Demonstration experiment for production of polarized positrons In the FFTB at SLAC with 50 GeV, 10 10 e - /pulse, 30 Hz In the FFTB at SLAC with 50 GeV, 10 10 e - /pulse, 30 Hz 1 m long helical undulator produces circular polarized  ‘s 0-10 MeV 1 m long helical undulator produces circular polarized  ‘s 0-10 MeV Conversion of photons to positrons in 0.5 rad Ti-target Conversion of photons to positrons in 0.5 rad Ti-target Measurement of polarization of positrons by Compton transmission method Measurement of polarization of positrons by Compton transmission method

3 3 Status of E166 Negotiating for June, 2005 and September, 2005 runs in FFTB Negotiating for June, 2005 and September, 2005 runs in FFTB All equipment at SLAC and installed in FFTB tunnel All equipment at SLAC and installed in FFTB tunnel except Undulator which is in final alignment at SLAC (800  m id tube aligned to 700  m id protection collimator) except Undulator which is in final alignment at SLAC (800  m id tube aligned to 700  m id protection collimator) Ready for power system tests and beam Ready for power system tests and beam

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