Fundamental - Mode rf Design in e + e - Storage Ring Factories
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Beam Loading in High-energy Storage Rings*
The analysis of beam loading in the RF systems olhighenergy storage rings (for example, the PEP e-e+ ring ) is complicated by the fact that the time, Tb, between the passage of successive bunches is comparable to the cavity filling time, Tf. In this paper, beam loading expressions are first summarized for the usual case in which Th << Tt. The theory of phase oscillations in the heavily-bea&loa&...
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Particle loss due to the emission of single energetic beamstrahlung photons in beam collisions is shown to impose a fundamental limit on storage-ring luminosities at energies greater than 2E0 ∼ 140GeV for head-on collisions and 2E0 ∼ 40GeV for crab-waist collisions. Above these threshold energies, the suppression factor due to beamstrahlung scales as 1/E 0 , and for a fixed power of synchrotron...
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The Advanced Photon Source (APS) at Argonne National Laboratory is exploring the possibility of using radio frequency deflection to generate x-ray radiation pulses on the order of 1 pico-second (Delta t – 70%) or less [1]. This scheme is based on a proposal by A. Zholents et al. [2] that relies on manipulating the transverse momentum of the electrons in a bunch by using an rf deflecting cavity ...
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The design and initial operation of a vertical square He-Ne ring laser G0 with a perimeter of 14 m is discussed. This builds on earlier demonstrations of the feasibility of large ring lasers (perimeter approximately 4 m) for single-mode gyroscope operation and with lesser pulling than navigation gyroscopes. With servoing of the rf excitation to yield single-mode operation, G0 gave a quality fac...
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Picosecond-pulse III-V-on-silicon mode-locked lasers based on linear and ring extended cavity geometries are presented. In passive mode-locked operation a 12 kHz -3dB linewidth of the fundamental RF tone at 4.7 GHz is obtained for the linear cavity geometry and 16 kHz for the ring cavity geometry. Stabilization of the repetition rate of these devices using hybrid mode-locking is also demonstrated.
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