1. Cluster Finder Report Laura Sartori (INFN Pisa) For the L2Cal Team Chicago, Fermilab, Madrid, Padova, Penn, Pisa, Purdue

2. CDF in Paris 20072 Motivation CrossSection Level 2 Jet (Et>40 GeV) 1.At high lumi, large Increase of the jet/Met based trigger cross sections.  Heavily prescaled search triggers. 2.Decrease of the multi-jets trigger efficiency. Reconstructed Jets @Level 3 Merging of the jets @ L2 Cause:  L2 cluster algo (Pacman) merges True/fake jets together: Low Et jets  high Et jets. Multi-jet event  single jet event.

3. CDF in Paris 20073 L2Cal upgrade 1.L1 calorimeter trigger tower infos are available to the L2 decision CPU with 10-bit resolution. 2.New algorithm in L2 CPU: Jet clustering (cone-based). Met calculation using the trigger tower energy info at the maximum resolution. 3.Possibility to implement different algo in the CPU (angular cuts, SVT matching..). Install parallel L2CAL hardware path to be tested in fully parasitic mode. L2Cal

4. CDF in Paris 20074 New system overview L1CAL Dirac Board Calorimeter L2 Decision Crate 10-bits 8-bits L2CAL Cluster Finder Dcas Global L2 Decision New Hardware path Duplicate L1 Trigger Towers Energy Infos to run in parasitic. Collect, merge and send Trigger Towers to Global L2 Decision. New cluster finder Algo and Met.

5. CDF in Paris 20075 Duplicate the information DIRAC DCAS New Pulsar Boards Goal: running in parasitic mode (current and new system together). How: A set of new 288 LVDS cables (L-shape) connect DIRAC with DCAS boards (like in the current system) and DIRAC with the new Pulsars Boards. We are running smoothly from April.

6. CDF in Paris 20076 New Hardware Path Pulsar Crate (6) 6 slink outputs 6 slink outputs Slink merger Pulsar (4) PC Pulsar Crate (6) Pulsar Crate (6) 6 slink outputs Use PULSARS as receivers for LVDS data from Dirac Build a new Mezzanine Card to interface the 40 bit cables with PULSAR. Serialize the data in Slink format Receive on PC through Slink-PCI boards Pulsars receivers with 4 Mezzanine.

7. CDF in Paris 20077 Test the system Monitoring: –Full path up to CPU is monitored Timing studies for hardware and software path. New L2CAL bank (TUPD) in same format as old DCAS bank (TC2D). Comparison between the two banks. Compare decision bits between the main and upgrade PC. Crate0 Crate1 Crate2 Merger Global L2 Decision

8. CDF in Paris 20078 TESTSTAND ROOM…et la vie est plus facile!!! Doesn’t matter when, doesn’t matter what…in teststand you’ll find it!!

9. CDF in Paris 20079 Status of the hardware and software: the pieces. Hardware: –All in place and tested (Pulsars receivers, cables, Pulsars mergers). –Included by-default in beam and monitored since April without any outstanding problems. Monitoring: –Online monitoring available (to check both data and timing). Interface Software: –Code for decision interface, finalized; ready to build trigger tables for L2Cal. Clustering Software: –Finalized. New L2Cal bank –Finalized. Included by-default in beam.

10. CDF in Paris 200710 Decision Comparison: –All decision bits (between main and upgrade PC) match in every events stream D (10k events) The system worked smoothly!! Commissioning started: we run in parasitic mode for 2 stores in the last week: Timing –Faster than main system by 1.5 us Dead Time about 4.7% Commissioning

11. CDF in Paris 200711 ToDo List Still work left to do before readiness review (middle june)

12. CDF in Paris 200712 Any Questions?? In the L2Cal web page you can found all the answers (tests results, status of the commissioning, hardware and software details, link, talks, howto, instructions, our pictures..). http://www-cdfonline.fnal.gov/upgrades/daq_trig/l2cal/l2cal_home.htm Progress, questions, comments, problems, doubts, documented in L2Upgrade e-log http://www-cdfonline.fnal.gov/cgi/elog/det-system-elog.pl?nb=l2upgrade Day by day the monitoring give feedback about the hardware status: http://www.pd.infn.it/~cortiana/TrigMonOut/TrigMonOut.html L2Cal Firmware http://www.pi.infn.it/~piendi/L2cal_upgrade