| Paper |
Title |
Page |
| TUPC044 |
Towards Routine Operation of the Digital Tune Monitor in the Tevatron
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1155 |
| |
- V. Kamerdzhiev, V. A. Lebedev, A. Semenov
Fermilab, Batavia, Illinois
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The digital tune monitor (DTM) was designed to measure bunch-by-bunch tunes in the Tevatron collider. It uses a standard BPM as a pickup. The vertical proton monitor is installed and allows us to gain valuable operational experience. A major upgrade is underway to implement an automatic bunch-by-bunch gain and offset adjustment to maintain the highest possible sensitivity under real operational conditions. Once the system is shown to be able to cope with orbit changes and different bunch intensities in an automatic manner while reliably delivering data it will be expanded to measure horizontal proton as well as antiproton tunes. The motivation and the technical description of the DTM as well as the latest experimental results are presented. Major challenges from the design and operation point of view are discussed.
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| WEPP037 |
Independent Component Analysis of Tevatron Turn-by-turn BPM Measurements
|
2602 |
| |
- A. V. Petrenko
BINP SB RAS, Novosibirsk
- V. A. Lebedev, A. Valishev
Fermilab, Batavia, Illinois
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Transverse dipole coherent beam oscillations in the Tevatron were analyzed with different independent component analysis algorithms. This allowed to obtain the model-independent values of coupled beta-functions as well as betatron phase advance and dispersion along the ring from a single kick measurement. Using a 1-turn shift of turn-by-turn BPM readings for virtual doubling of the number of BPMs it is also possible to measure the fractional part of betatron tunes with high accuracy. Good agreement with the linear optical model of the Tevatron was observed.
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| THPC074 |
Observation of Coherent Oscillations of Colliding Bunches at the Tevatron
|
3158 |
| |
- A. Valishev, V. Kamerdzhiev, V. A. Lebedev
Fermilab, Batavia, Illinois
- F. A. Emanov
BINP SB RAS, Novosibirsk
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Commissioning of the new digital tune monitor (DTM) at the Tevatron made it possible to observe vertical dipole oscillations of individual bunches at any time during an HEP store. Since all the bunches have significantly different collision conditions, this device provides vast possibilities for investigation of coherent beam-beam effects. We present theoretical model and experimental observations of coherent beam-beam modes. Analysis of the DTM data and its agreement with theory are discussed.
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