We discuss both simulations as well as experimental studies of a potentially beneficial accelerat... more We discuss both simulations as well as experimental studies of a potentially beneficial acceleration scheme in the MI for pbars from the Accumulator Ring or Recycler Ring. The scheme involves accepting the pbar bunches with 2.5 MHz RF structure from either of these two synchrotrons. Re-bunching using the 53 MHz RF system isoadiabatically and accelerating using 53 MHz RF system from 8 GeV to 150 GeV. Further we try to coalesce the beam using the 2.5 MHz RF system. Various stages of RF manipulation are discussed and some improvements are also suggested
Electron cooling of 8 GeV antiprotons at Fermilab's Recycler storage ring is now routinely us... more Electron cooling of 8 GeV antiprotons at Fermilab's Recycler storage ring is now routinely used in the collider operation. It requires a 0.1-0.5 A, 4.3 MeV dc electron beam and is designed to increase the longitudinal phase-space density of the circulating antiproton beam. This paper briefly describes the characteristics of the electron beam that were achieved to successfully cool antiprotons. Then, results from various cooling force measurements along with comparison to a non-magnetized model are presented. Finally, operational aspects of the implementation of electron cooling at the Recycler are discussed, such as adjustments to the cooling rate and the influence of the electron beam on the antiproton beam lifetime.
We discuss both simulations as well as experimental studies of a potentially beneficial accelerat... more We discuss both simulations as well as experimental studies of a potentially beneficial acceleration scheme in the MI for pbars from the Accumulator Ring or Recycler Ring. The scheme involves accepting the pbar bunches with 2.5 MHz RF structure from either of these two synchrotrons. Re-bunching using the 53 MHz RF system isoadiabatically and accelerating using 53 MHz RF system from 8 GeV to 150 GeV. Further we try to coalesce the beam using the 2.5 MHz RF system. Various stages of RF manipulation are discussed and some improvements are also suggested
Electron cooling of 8 GeV antiprotons at Fermilab's Recycler storage ring is now routinely us... more Electron cooling of 8 GeV antiprotons at Fermilab's Recycler storage ring is now routinely used in the collider operation. It requires a 0.1-0.5 A, 4.3 MeV dc electron beam and is designed to increase the longitudinal phase-space density of the circulating antiproton beam. This paper briefly describes the characteristics of the electron beam that were achieved to successfully cool antiprotons. Then, results from various cooling force measurements along with comparison to a non-magnetized model are presented. Finally, operational aspects of the implementation of electron cooling at the Recycler are discussed, such as adjustments to the cooling rate and the influence of the electron beam on the antiproton beam lifetime.
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Papers by Stanley Pruss