S. Saritepe

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A collaboration has been formed at FNAL (Fermi National Accelerator Laboratory) and SSCL (Superconducting Super Collider Laboratory) to develop software tools for operational simulation of existing and planned accelerator systems. The toolset is organized around an accelerator lattice description maintained by a commercial database management system. The(More)
New low- beta insertions will be used in the Tevatron collider at both the B0 and D0 interaction regions. To reduce the beam-beam tune shift, electrostatic separators will be installed to separate the beams horizontally and vertically at all but the two interaction points. An insertion has been installed at the B0 straight section and enough separators to(More)
During collider studies it was observed that with bunch intensities of >60*10/sup 9/ particles per bunch in the Tevatron, the beam would go unstable if the machine ran close to the coupling resonance. Simple head-tail stability only requires the horizontal and vertical chromaticities to be positive. Since the beam went unstable even when this condition was(More)
  • S. Saritepe
  • Conference Record of the 1991 IEEE Particle…
  • 1991
Starting with the third (1992) run, closed orbits of protons and antiprotons will be helically separated everywhere in the Tevatron except at interaction regions B0 and D0. Helical separation makes it possible to improve the initial luminosity greatly, but also brings the problem of long-range beam-beam interactions. What is the contribution of long-range(More)
During the 1988-9 Tevatron collider run, six antiproton bunches were colliding head-on with six proton bunches at 12 crossing points symmetrically distributed around the ring. The normalized transverse proton emittance (95% definition) was typically 25 pi mm-mr on both planes and the antiproton transverse emittance was typically 18 pi mm-mr. The working(More)
A model of the beam-beam interaction has been used to explain the discrepancy between the luminosity as derived from experimental counting rates versus the luminosity derived from beam measurements. The physical picture is that the beam-beam interaction distorts the lattice functions of the machine. These distortions change the real luminosity by altering(More)
The 1991 Tevatron Collider lattice contains novel elements such as electrostatic separators, feed-down sextupoles, and low-beta quadrupoles. The low-beta section at B0 is a matched insertion. It is possible to vary the beta from 1.7 m to 0.25 m while keeping the lattice parameters around the ring constant. Another important characteristic of the insertion(More)
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