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Beam Studies in the Next Three Weeks (Oct 24 – Mid Nov ‘03)

Beam Studies in the Next Three Weeks (Oct 24 – Mid Nov ‘03). Re-commissioning (Everyone) Beam intensity limit and transfer efficiency (Everyone) With the new L3 layout Raise L13 septum by 1 inch and lower the dogleg current Linac beam measurements (Ellott, Larry, Milorad, Peter L.)

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Beam Studies in the Next Three Weeks (Oct 24 – Mid Nov ‘03)

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  1. Beam Studies in the Next Three Weeks (Oct 24 – Mid Nov ‘03) • Re-commissioning (Everyone) • Beam intensity limit and transfer efficiency (Everyone) • With the new L3 layout • Raise L13 septum by 1 inch and lower the dogleg current • Linac beam measurements (Ellott, Larry, Milorad, Peter L.) • 805 MHz bunch length • Momentum spread • Beam profile • 400 MeV line measurement (?) • DC measurements: • Orbit, tune, lattice function (beta and dispersion) (Ray, Eric, Xiaobiao) • Chromaticity (Ray, Francois, Weiren) • dp/p = [-0.004, 0.003] • Test of the spreadsheet • Longitudinal emittance (Ray, Weiren) • Longitudinal acceptance (Elliott, Weiren) • Transverse emittance turn-by-turn (IPM) (Ray, Panagiotis, James, Jim Z.) • Aperture scan (Jim L.,Bill P., Eric, Linda) • Injection painting (Jim L., Ray, Weiren) • Transverse impedance (Xiaobiao, Bill N., Weiren) • Stop band (Chuck, Ray) • Transverse quadrupole moment (Jim L.?) • Montague resonance (Can we create asymmetric beams?)

  2. Beam Studies in the Next Three Weeks (cont…) • AC measurements: • Orbit, tune, lattice function (beta and dispersion) (Ray, Eric, Xiaobiao) • Chromaticity (Ray, Francois, Weiren) • Test of the spreadsheet • RF capture (X. Yang, Jim M.) • Longitudinal emittance at 8 GeV (Ray) • Bunch area measurement by dipping RF voltage during the cycle (Jim N., Ray) • Transverse emittance at 8 GeV (Ray, Panagiotis, James) • Transverse emittance tunr-by-turn (IPM) (Ray, Panagiotis, James) • Longitudinal impedance (Ray, Bill P., Weiren) • Transverse impedance (Xiaobiao, Bill N., Weiren) • Transition crossing experiment: • Phase jump (Chuck, Kathy, Ray) • Chromaticity jump (Ray, Francois, Weiren) • Gamma-t jump (Bill P., Chuck, Kathy, Jim M., Ray, Weiren) • Taking out 1-2 cavities during transition crossing (Bob, Ray) • Coupled bunch instability experiment: (Ray, Bill P., Dave W., Weiren) • Longitudinal beam profile as a function of beam intensity • Dampers on or off • Collimator study: (Eric, Ray, Peter K., Sasha) • Loss distribution for different jaw positions

  3. Beam Studies in the Next Three Weeks (cont…) • Bunch rotation experiment: (Bill P., Kiyomi, Milorad, Weiren) • Longitudinal beam profile before and after the rotation • Momentum spread before and after the rotation (?) • MI-8 line measurement: (Ming-Jen, Jim L., Ray) • Orbit, beta-function, dispersions • Longitudinal beam profile • Momentum spread • Transverse emittance • Change beam horizontal position (by a few mm) at MP02 at extraction • BPM reading at the last turn prior to the extraction • MiniBooNE line measurement: (Ming-Jen) • Momentum spread (dispersion = 17 m) • Rotated beam experiment

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