Modulated BBA

…the second 10 minutes…

Jen Niedziela and Todd SatogataAPEX Report

May 2, 2007• Set up to modulate IR Q1’s, Q3’s

– 1/40 Hz modulation on quad – 1/10 Hz modulation on bump– Down sampled BPMs to get 40 seconds of TBT

data

• Script for data-taking now functional• Interrupted by QLI in blue

– Truncated time to ~20 minutes• Three data sets for bo6-qd1• Two data sets for bo6-qd3

• Analysis in progress• Request one more hour

Sample Data – bo6-bh12

Quad Modulation frequency visible in BPM spectrum

~160 turns between nodes, point of minimal response visible

BBQ response

bo6-qd3bo6-qd1(misfire)