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Webber, R. C.

Paper Title Page
TUPAS015 Operational Aspects of the Main Injector Large Aperture Quadrupole 1685
  • W. Chou, C. L. Bartelson, B. C. Brown, D. Capista, J. L. Crisp, J. DiMarco, J. Fitzgerald, H. D. Glass, D. J. Harding, B. Hendricks, D. E. Johnson, V. S. Kashikhin, I. Kourbanis, W. F. Robotham, T. Sager, M. Tartaglia, L. Valerio, R. C. Webber, M. Wendt, D. Wolff, M.-J. Yang
    Fermilab, Batavia, Illinois
  Funding: Work supported by Universities Research Association, Inc. under contract No. DE-AC02-76CH03000 with the U. S. Dept. of Energy.

A two-year Large Aperture Quadrupole (WQB) Project was completed in the summer of 2006 at Fermilab.* Nine WQBs were designed, fabricated and bench-tested by the Technical Division. Seven of them were installed in the Main Injector and the other two for spares. They perform well. The aperture increase meets the design goal and the perturbation to the lattice is minimal. The machine acceptance in the injection and extraction regions is increased from 40π to 60π mm-mrad. This paper gives a brief report of the operation and performance of these magnets. Details can be found in Ref**.

* D. Harding et al, "A Wide Aperture Quadrupole for the Fermilab Main Injector," this conference.
** W. Chou, Fermilab Beams-doc-#2479, http://beamdocs.fnal.gov/AD-public/DocDB/DocumentDatabase

FRPMS007 Status of the FNAL Digital Tune Monitor 3877
  • J.-P. Carneiro, V. Kamerdzhiev, A. Semenov, R. C. Webber
    Fermilab, Batavia, Illinois
  We have implemented a real-time method for betatron tune measurements from each bunch at Tevatron based on 16bit 100MHz ADC. To increase the betatron signal level from pick-up we have used a modified version Direct Diode Detection method combined with fast FPGA algorithm and 14 bit DAC for suppression of low frequency beam motion and noise background before final amplifying stage. A descritpion of this devise will be presented in the paper together with first results.