modulated bba
Post on 30-Dec-2015
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Modulated BBA. …the second 10 minutes… Jen Niedziela and Todd Satogata APEX 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 - PowerPoint PPT Presentation
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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)
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