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Overview

Overview. Event Builder IceTop Data Handler IceTop Trigger DOM strategy. Common Event Builder. IceTop DAQ components. Monitoring. DOMs (320). LG DOM. Tank 1. InIce Trig.Gen. *. Shower Trigger. HG DOM. Station 1. DOM Hubs (10). 10 Hz. Hor. Sh. Trigger. HG DOM. Tank 2.

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Overview

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  1. Whomever

  2. Overview • Event Builder • IceTop Data Handler • IceTop Trigger • DOM strategy

  3. Common Event Builder IceTop DAQ components Monitoring DOMs (320) LG DOM Tank 1 InIce Trig.Gen. * Shower Trigger HG DOM Station 1 DOM Hubs (10) 10 Hz Hor. Sh. Trigger HG DOM Tank 2 IceTop Data Handler IceTop Data Handler LG DOM Priority/calib. Trig. IceTop Data Handler (IDH) Global Trigger Station 2 * DAQ Control * 32 MB/s . . . . 100 kB/s * Station 80 On line InIce DATA

  4. Global Trigger Monitoring Logging Trigger Request Processor Read Request Generator Cache Manager Trigger Request Buffer DAQ Dispatch Event Compilation DAQ control Event Builder “Front End” SP/IDH . . . . . . splice SP/IDH “Back End”

  5. Global Trigger Monitoring Logging Trigger Request Processor Read Request Generator Cache Manager Trigger Request Buffer x 15 DAQ Dispatch DAQ control Event Builder-Plan B SP/IDH . . . . . . Read Request Processor Event Compilation SP/IDH

  6. Logging x 32 IDH (one for each hub) Moni. Builder Monitoring Tcal Builder DAQ control Monitor IceTop Trigger Time corr. Hit List Data Buffers splice de-mux DOM Hub channel time offset Event Builder Query Handler - Data buffers allocated by hash, one buffer per hit . - IDH may generate “light” payloads, to send to trigger IDH-DCM

  7. Monitoring Logging Shower Trigger 4-fold, 10 ms H. Sh. Trigger 5-fold, 100 ns + SF Calibration IDH IDH IDH IDH IDH IDH IDH IDH IDH IDH IceTop Trigger DAQ control Global Trigger splice sorter Joiner splice

  8. Monitoring Logging SMT Trigger N-fold, t ms MBT Trigger Calibration IDH IDH IceTop Trigger – 2006 First implementation may be a clone of InIce Trigger. This approach demonstrated by monolith in 2005, but doesn’t understand “station”, “tank”, “HG/LG” DAQ control Global Trigger splice Joiner

  9. DOM strategy • 2005 • HG: 5 x 106, LG: 5 x 105 • Local coincidence: HGA+(HGB or LGB), LGA+(HGB or LGB), HGB+(HGA or LGA), LGB+(HGA or LGA) • All DOMs in 10-fold DOM trigger. • 3,4 station separation in PNF • 2006a • HG: 5 x 106, LG: 10-2 HG, needs testing • Local coincidence (same as 2005) • All DOMs in N-fold trigger (N=10?) • InIce compression algorithm • 200x • HG: optimized, LG: 10-2 HG • Local coincidence: • Low threshold: L1=HGA+HGB, LGA,B slaved to L1 • High threshold: none, IceTop feature extraction required • Only HG DOMs in trigger • 4-fold station trigger • 2-stage 5-fold DOMs+ shower front horizontal shower trigger

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