【摘 要】
:
The wake field, impedance and output signal for SSRF BPM have been calculated and analyzed by us-ing the numerical simulation code of MAFIA. The narrow-band imp
【机 构】
:
Shanghai Institute of Applied Physics
论文部分内容阅读
The wake field, impedance and output signal for SSRF BPM have been calculated and analyzed by us-ing the numerical simulation code of MAFIA. The narrow-band impedance of BPM arising from formation of reso-nance in its cavity like structure either is harmful to beam or limits the performance of BPM itself, and should be re-duced to tolerable levels. The calculated results show that there are three main peaks in the impedance spectrum ofthe SSRF BPM prototype, and two of which are above the limit. After lots of simulations for different shapes of theBPM button, a new structure of SSRF BPM have been found, and there is only one main peak, which is under thelimit, in the impedance spectrum. Its output signal also meets the requirement.
其他文献
Automatic line reclosing schemes used in an extra-high-voltage power system is an economical and effective means to maintain transient stability. A novel method
This article gives a mechanical model, in which the layers of lithosphere are assumed to be the creep materials, to study the coupling mechanism of a syn-basin-
The binary assembly behavior of 1-iodoocta- decane with substituted phthalocyanine (Pc) is studied using the scanning tunneling microscopy (STM). By altering th
Based on the nucleation and growth theory together with the influence of deformation on driving force and nucleation site,a numerical model was developed for pr
High-voltage power supply (HVPS) of Electron Cyclotron Resonance Heating(ECRH) for HT-7 and HT-7U is presently being constructed. The high voltage (100 kV) en-e
A monolayer technique was used to investigate the interaction between the ribosome inactivating protein trichosanthin (TCS) and phospholipid membrane.The adsorp
A theoretical investigation is conducted to understand the contact line movement and associated contact angle phenomena. Contact line is supposed to move on a t
The bifurcation problems of rough 2-point-loop are studied for the case ρ11>λ11,ρ1/2<λ1/2,ρ11ρ12<λ11λ2, where-ρ1i<0 and λ1i>0 are the pair of principal eig
In this paper we discuss the relations among the doubling condition, equivalence of the Hausdorff measures and equivalence of metrics. We will show that H ρ,g1
Clustering categorical data, an integral part of data mining,has attracted much attention recently. In this paper, the authors formally define the categorical d