High-efficiency absorber for damping transverse wakefields
نویسندگان
چکیده
منابع مشابه
Manifold Damping of Wakefields in High Phase Advance Linacs for the Nlc
Earlier RDDS (Rounded Damped Detuned Structures) [1,2], designed, fabricated and tested at SLAC, in collaboration with KEK, have been shown to damp wakefields successfully. However, electrical breakdown has been found to occur in these structures and this makes them inoperable at the desired gradient. Recent results [3] indicate that lowering the group velocity of the accelerating mode reduces ...
متن کاملPersistent Wakefields Associated with Waveguide Damping of Higher Order Modes*
By means of an analytic model and numerical simulations we demonstrate that the wake of a waveguide damped cavity contains a persistent component which decays as tm3f2 and thus is dominant at sufficiently large values oft. Because there are scenarios for which the effect gives rise to unacceptable beam instability, it cannot be ignored, but it seems likely that such an outcome can be avoided wi...
متن کاملDispersion in the Presence of Strong Transverse Wakefields
To minimize emittance growth in a long linac, it is necessary to control the wakefields by correcting the beam orbit excursions. In addition, the particle energy is made to vary along the length of the bunch to introduce a damping, known as the BNS damping, to the beam break-up effect. In this paper, we use a two-particle model to examine the relative magnitudes of the various orbit and dispers...
متن کاملGraphene-assisted high-efficiency liquid crystal tunable terahertz metamaterial absorber.
In this paper, few-layer porous graphene is integrated onto the surface of a metasurface layer to provide a uniform static electric field to efficiently control liquid crystal, thereby enabling flexible metamaterial designs. We demonstrate a tunable cross-shaped metamaterial absorber with different arm lengths driven by this combined metasurface and graphene electrode. The resulting absorber su...
متن کاملResearch on Damping Characteristics of Shock Absorber for Heavy Vehicle
The damping characteristic of shock absorber has an important influence on its design and overall performance of vehicle system. Firstly, the structural features and working principle of hydraulic shock absorber are introduced. Then the detail testing scheme of the shock absorber is proposed and the damping characteristics are tested under both sinusoidal and random displacement excitation (HT-...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Special Topics - Accelerators and Beams
سال: 2007
ISSN: 1098-4402
DOI: 10.1103/physrevstab.10.042003