Downgoing muons @1600 m depth 6 KHz
@1800 m depth 4 KHz
Times trigger efficiency = 1 KHz times (OMs/5000)2
Worst case 4 KHz times (OMs/5000)2
IceCube Proposal 1 KHz
On-line Filter reduces event rate to about 50 Hz
The IceCube Proposal is based on a low multiplicity (local coincidence) trigger with a raw rate dominated by down-going muons of 1 KHz. This data is to be filtered at the pole to remove down-going muon background. The resulting 50 Hz is sufficient to ac
While the trigger rate scales with the detector area, the online filter rate does not. The AMANDA experience has taught us that small detectors have a more difficult time rejecting backgrounds. As the detector grows, the lever-arm of the hits will becom
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