High-Level Trigger path information HLT_Mu22_TkMu8 (DoubleMu, DoubleMuParked datasets).
first seen online on run 190456 (/cdaq/physics/Run2012/5e33/v4.4/HLT/V5)
last seen online on run 209151 (/cdaq/special/25ns/v1.1/HLT/V2)
V4: (runs 190456 - 193621) seeded by: L1_SingleMu16er
V5: (runs 193834 - 194225) seeded by: L1_SingleMu16er
V6: (runs 194270 - 196531) seeded by: L1_SingleMu16
V7: (runs 198022 - 199608) seeded by: L1_SingleMu16
V8: (runs 199698 - 205238) seeded by: L1_SingleMu16
V9: (runs 205303 - 209151) seeded by: L1_SingleMu16
See also the full list of triggers for CMS 2012 open data:Trigger information for 2012 CMS open data
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