T Himel

Learn More
We present preliminary results of a search for several exclusive c harmless hadronic B decays from electron-positron annihilation data collected by the BABAR detector near the 4S resonance. These include three-body decay modes with nal states h h h and h h 0 , and quasi-two-body decay modes with nal states X 0 h and X 0 K 0 S , where h = or K and X 0 = 0 or(More)
  • L Hendrickson, S Allison, T Gromme, T Himel, K Krauter, F Rouse +2 others
  • 1991
11-91 7041Al e+ Tar! From Linac \ Figure 1: Layout of the SLC with fast feedback loops shown. S = steering loop; E = energy control; I = intensity control; C = special-purpose loop to maintain beam collisions; * = prototype. Abstract A generalized fast feedback system has been developed to stabilize beams at various locations in the SLC. The system is(More)
  • T Himel, S Allison, P Grossberg, L Hendrickson, R Sass, H Shoaee
  • 1993
The SLAC Linear Collider now has a total of twenty-four beam-steering feedback loops used to keep the electron and positron beams on their desired trajectories. Seven of these loops measure and control the same beam as it proceeds down the linac through the arcs to the final focus. Ideally each loop should correct only for disturbances that occur between it(More)
The BABAR detector, situated at the SLAC PEP-II asymmetric e + e ; collider, has been recording data at energies on and around the (4S) resonance since May 1999. In this paper, we brieey describe the PEP-II B Factory and the BABAR detector. The performance presently achieved by the experiment in the areas of tracking, vertexing, calorimetry and particle(More)
We report on exclusive decays of B mesons into final states containing charmonium using data collected with the BABAR detector at the PEP-II storage rings. The charmonium states considered here are J/ψ , ψ(2S), and χ c1. Branching fractions for several exclusive final states, a measurement of the decay amplitudes for the B 0 → J/ψ K * decay, and(More)
The BABAR detector, situated at the SLAC PEP-II asymmetric e + e − collider, has been recording data at energies on and around the Υ (4S) resonance since May 1999. In this paper, we briefly describe the PEP-II B Factory and the BABAR detector. The performance presently achieved by the experiment in the areas of tracking, vertexing, calorimetry and particle(More)
  • C Adolphsen, T Barklow, D Burke, F.-J Decker, P Emma, M Hildretb +13 others
  • 1993
The Stanford Linear Collider was designed to operate with round beams [ 11; horizontal and vertical emittance made equal hi the damping rings. The main motivation was to facilitate the optical matching through beam lines with strong coupling elements like the solenoid spin rotator magnets and the SLC ales. Tests in 1992 showed that 'flat' beams with a(More)
A data acquisition method has been developed at the SLAC Linear Collider (SLC) that provides accurate beam parameter information using sub-tolerance excitation and synchronized detection. This is being applied to several SLC subsystems to provide high speed feedback on beam parameters such as linac output energy spread. The method has significantly improved(More)
  • F Rouse, S Castillop, S Allison, T Gromme, L Hendrickson, T Himel +4 others
  • 1992
A new feedback system has been developed that stabilizes the SLC beams at many locations. The feedback loops are designed to sample and correct at the repetition rate of the accelerator. Each loop can be distributed across several IN-TEL 80386 microprocessors that control the SLC hardware. ,4 new communications system, KISNET, has been developed to pass(More)
The inclusive production of charmonium mesons in B meson decay has been studied in a 20.3 fb −1 data set collected by the BABAR experiment operating at the Υ (4S) resonance. Branching fractions have been measured for the inclusive production of the charmonium mesons J/ψ , ψ(2S), χc1, and χc2. The branching fractions are also presented as a function of the(More)