Successful observation of Schottky signals at the Tevatron collider [electronic resource].

Published:: Washington, D.C : United States. Dept. of Energy. Office of Energy Research, 1989.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: Pages: (6 pages) : digital, PDF file
Additional Creators:: Lawrence Berkeley National Laboratory, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

We have constructed a Schottky detector for the Tevatron collider in the form of a high-Q (≈5000) cavity which operates at roughly 2 GHz, well above the frequency at which the Tevatron's single-bunch frequency spectrum begins to roll off. Initial spectra obtained from the detector show clearly observable Schottky betatron lines, free of coherent contaminants; also seen are the common-mode'' longitudinal signals due to the offset of the beam from the detector center. The latter signals indicate that at 2 GHz, the coherent single-bunch spectrum from the detector is reduced by >80 dB; therefore, in normal collider operation, the Schottky betatron lines are >40 dB greater than their coherent counterparts. We describe how the data we have obtained give information on transverse and longitudinal emittances, synchrotron frequency, and betatron tunes, as well as reveal what may be previously unobserved phenomena. Space limitations restrict us to presenting only as much data as should be necessary to convince even the skeptical reader of the validity of the claim made in the paper's title. 3 refs., 2 figs.

Report Numbers:

E 1.99:lbl-27664
E 1.99: conf-890803--35
conf-890803--35
lbl-27664

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Note:

Published through SciTech Connect.
08/01/1989.
"lbl-27664"
" conf-890803--35"
"DE90002166"
International conference on high energy accelerators, Tsukuba (Japan), 20-26 Aug 1989.
Lambertson, G.R.; Goldberg, D.A.

Funding Information:

AC03-76SF00098

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