We had the 1st IP-BPM meeting at 15:00-16:10, 8th May 2006, ATF-LC meeting room.
Participants: P.Doublet, Y.Honda, Y.Inoue, T.Hino and T. Tauchi
Philippe reported his work for last two weeks. He tried to speak in Japanese. His Japanese could be understood with his slides. It is a good exercise. His presentation is here. Also, we wrote a paper of "An introduction to rectangular Cavity Beam Position Monitors" for his beginning of work.
First, test results of the electronics were reported. The tested electronics consists of three modules of Converter, Limiter & Intensity Detector and Detector with 4 phases as well as phase adjustment" potentiometer. Diagrams of major components are shown in a PDF file, which is extracted from a Honda's note ( pdf, Japanese) .
Present converter is an old one with 600MHz output frequency instead of 714MHz. He showed basic properties of the circuit such as linearity and band pass filter in the Limiter, detector performance with 4 phases, i.e. 0, 45, 90 and 135 degree.
There were following comments;
Since ATF will be operated in next week, we will make a beam test plan .
We will have the next meeting on 22nd May 2006.