Quadrupole Vibration Measurements for QM1B and QC3 in the Final Focus Test Beam at SLAC (LCC-0036) | Zendy

R. W. Fenn | Zendy

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Quadrupole Vibration Measurements for QM1B and QC3 in the Final Focus Test Beam at SLAC (LCC-0036)

Author(s) -

R. W. Fenn

Publication year - 2004

Language(s) - English

Resource type - Reports

DOI - 10.2172/826831

Subject(s) - vibration , quadrupole , beam (structure) , physics , focus (optics) , spectral line , luminosity , power (physics) , optics , acoustics , atomic physics , astrophysics , quantum mechanics , astronomy , galaxy

We have taken vibration measurements of quadrupoles QM1B and QC3 in the Final Focus Test Beam (FFTB) tunnel at SLAC. We present results for power spectra and integrated power spectra of the vibrations in the frequency range 1-128Hz. For QM1B, we find 2nm rms vertical motion with respect to the FFTB tunnel floor for f > 3Hz. The relevance of this data to NLC performance is discussed. In particular, we estimate a 4% luminosity loss if an IR quadrupole were to have similar vibrations as QM1B.

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