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Minutes and Slides from Trigger Hardware Meetings

Oct 24, 2003

• XTRP readout errors report - Jim
• Three track board status -Christopher M
• Ultra DPS status - Michael
• Ultra DPS tasks and plans - Greg

Sep 5, 2003

• XTRP - Kevin P
• Isolation - Steve K
• Software - Tom
• Über-prescaling - Greg reports that we have firmware to test on global L2 for this. Will work during shut-down
• Software compliance - Bill B reports new java version migration drive. Will contact individual software maintainers to help them upgrade.

Aug 29, 2003

• Trigmon update - Charles P
• Michigan L2 Muon board - Tom and/or Fred

June 20, 2003

• TOF trigger report from Mike

May 9, 2003

• Overview - Greg and Peter
• L2 - Stephen
• SVT - Roberto
• Ultra-DPS - by DPS!
  • See CDF 6434 for more details.
• Modsim simulation of Ultra-DPS - Michael

April 25, 2003

• Overview- Peter & Greg
• Modsim Studies- Henry and Michael. See conclusions on last page of this talk.

• All you ever wanted to know about how dead time is defined can be found in CDF 4480.
• Talk about the two SRC project
• Draft note about the same

Mar 28, 2003 @ 10 AM - note new time!

• XMon update - see this status page or this summary from Charles P
• Preparing the bottom alpha crate for L2 muon tests - Fred, Soo-Bong et al
• AOB

Mar 21, 2003

• Fred's L2 muon board status report

Jan 31, 2003

• Recap of work during shutdown
  • Dynamic prescales: L2 dynamic prescales is ready for a beam test.
  • new FRED firmware
  • Readout lists: last problem ironed out - alpha was running out-of-date firmware. Ready for readout lists, all default trigger tables will be setup to use them.
  • Good progress on the l2 muon board. Fred has a new VME address map(MS word)
  • XTRP tests
    • Three-track board: problems with board at B0, possibly due to different VME processor
    • Made progress on XTRP part of advanced L1 muon (see link above)
  • XFT tests: Can't reproduce BC mismatches in test stand. Will look at Myron mode runs and scan data. In 20 pb^-1 of data, Cheng-Ju found ~150 mismatches.
• Advanced L1 muon status - see the status report page
• post-shutdown beam tests

Jan 24, 2003

December 13, 2002

1. L1 muon advanced options.
   • Insufficient resources on the muon trigger side force us to give up the CMU-only eta-gap muon trigger. Otherwise, things seem to be a go.
   • XTRP would like to do some tests on their end to assure that it is working properly.
   • New L1 muon options (not advanced, but prefred-rationalized) have been implemented in PHYSICS_TEST_1_04.
2. L2 muon board
• Fred now has a PowerPC crate controller at UM. He can reproduce VME problem reported on November 22nd where VME writes do not work with this processor.
• New 9U board is now four weeks late from manufacturer on five-day turn. Same manufacturer had no problems making first prototype. They are now on their third manufacturing attempt. Fred and Myron are considering withdrawing the P.O. from them and finding a new manufacturer.
3. Prefred
   • Mike and Carla latched in recognizable data patterns in Prefred. Timing is somewhat different than expected. Further scope testing with diffractive trigger types is required.
4. Fred: new FPGA design pending recovery of FPGA PC
5. Readout lists. During testing of the full, final implentation of readout lists with beam and the default trigger table, we found that we were unable to take data due to L1 Done TO's. This was unexpected as the no-beam tests with the SRC had not shown any problems. TS, Si DAQ and SRC experts were on-hand (M. Schmidt, S. Nahn, L. Miller) and spent some time investigating the problem. These tests will continue during the next studies period. From the trigger and DAQ point-of-view, all the pieces are in place.
6. Freeze/unfreeze of trigger table: With the successful migration of the L3 executable to offline version 4.8.4, the trigger table is now open for new modifications and improvements. Current to-do list is
   • new L1 muon options (prefred rationalization)
   • tau triggers (tested in last couple of days), J/Psi->ee bug fix
   • COT spark trigger when FRED is ready

December 6, 2002

1. Readout List Status and Final Plan
2. Improved L1 Muon Options Status
3. Advanced L1 Muon Options Status
4. New L1 Triggers - Status and Plan -- see readout list link above.
5. Your favorite topic as time permits

November 29, 2002

November 22, 2002

• Work during the access
  • Readout lists. Andrew Martin was able to pinpoint the errors in ROL in the TS and will be working on a fix at Yale.
  • Rate scans. Still unable to reliably delay SVT track arrival times via fake tracks.
• L1 muon options status. Tom has new code for the new options, JDL will make a table to test them head-to-head with the old options.
• Advanced L1 muon options status. Work has started on this and will finish in the first week of December.
• L2 muon board status
  • Full register map implemented. Differences observed between what is seen at UM and what is seen in B0: VME writes don't work at B0, while they do at UM.
  • Can read out buffer mezzanine cards via VME.
  • New 9U board coming this afternoon.
  • Need to get VME issues worked out before moving to Hotlink tests.
  • Can run muon trigger software at UM with Eric's board.

November 15, 2002

November 8, 2002

Planning for new L1 triggers

• Current GL1 configuration and FRED issues - Greg.
  • Global L1 crate
  • Fred Block diagram
  • Current bit assignments
• Proposal for new L1 trigger bits (from COT and TOF) - Jonathan
• Database issues (including L1 muon options) - Tom
• PreFRED status and issues - Carla
• TOF status - Mike
• Discussion and planning - all

November 1, 2002

1. Muon trigger status report and discussion - Stephen, Fred et al. Steady progress has been made on the L2 muon board. The board contains four data buses:
   1. Into the Hotlink from the matchbox,
   2. VME bus,
   3. Magic Bus,
   4. Internal Bus.
   • For the VME bus, communication with the crate controller was established and a test of 1E6 VME reads were done without errors, modulo one stuck bit. The reads were done from the controller FPGA. Next step is to establish VME communication to the other FPGA's.
   • For the Magic Bus, a simple handshake was done where the alpha talks to the Muon board via a PIO transaction. This was successful.
   • In order to test how the Muon board plays with other boards on the magic bus, a test was done where the alpha and the muon board are on the same magic bus and the alpha writes into itself via the magic bus. This was successful and shows that the muon board can pass the arbitration signal successfully. There was no opportunity to do a test with cosmics running where the muon was stuck into b0l2de00 and (passively) was part of a cosmics run. This test will hopefully be done next week.
   • For the refabrication of the 9U board, Fred has finished the artwork and it is being reviewed at UM. The expected turnaround time for the board is three weeks.
   • Plan for the interim with the current 9U board is
     • read buffer FPGA's over VME
     • push data via hotlink interface
     • Magic bus tests in parallel
2. Outline of plans for L1 Muon bits - Jonathan
3. Pulsar status report - Sakari

Oct 25, 2002 @ 9.30 AM -- note new time

1. Breaking News
2. New L1 Trigger Status
   • Diffractive Trigger Status and Plans
   • TOF trigger status and plans
   • COT trip trigger status and plans
3. Planning DAQ deadtime scans with beam time

Oct 18, 2002

Oct 11, 2002

1. Brief sub-system reports and breaking news
2. L1 muon status report: Eric James.
   • L1 muon trigger has been working reliably.

   • The CMU-CMU di-muon trigger has had a 30-50% increase in rate at L1, but no increases were seen at L3. Unbiased data samples didn't show any signs of problems. Mysterious.

     A special test run taken w/o L2 or L3 was taken. The simulation said that the data was ok (all data were correctly accepted) and no chamber-level problems were observed, either. The single-muon trigger rate looks ok.

   • Next: incorporate CSX into the trigger.

     Efficiency studies on W candidates show good efficiency for CSX: 1280/1300 W's had good CSX trigger. CMU-CSX is 97.5% efficient

     Rate reduction is proportional to the luminosity, and is a factor of 3-5 rejection. All CMX trigger will have a CSX requirement.

     • Note that the requirement is a hit on either counter, front or back. Each counter is ~85% efficient.
   • For TOF triggers, new matchbox firmware required.
   • IMU trigger is ready, but no physics triggers are currently proposed. Main use is to allow for plug calibration. Physics triggers need hadron TDC's, which we currently don't have.
   • CSP is in but not used.
3. Options for reducing L2 muon x-section by reworking L1.( Also see JDL talk on November 15, 2001.)
   • Add a third PT threshold, giving up phi resolution (from 2.5 to 5 degrees). Gives handle for high PT muon rate. In PHYSICS_1_03 and later tables, we get a similar effect by just requiring any high PT track in the event in L2.
   • Add a +/- threshold for the dimuon trigger.
     • need to assure that there are two tracks and two stubs (not currently in place).
     • CMU-CMU is biggest muon contribution to L2 in PHYSICS_1_03

4. L2 muon board status: Fred Niell

   • Computer problems at UM with Xilinx programming computer caused some delays.
   • Rev2 of new large FPGA mezzanine card has returned
   • Data phasing chips can be loaded with new chip
   • VME works to first order to big FPGA
   • Next step to try to talk to other FPGA's
   • Rev 2 of 9U board released next week. Required as mechanical issues only allow you to mount 6/8 mezzanine cards right now. Also fixes JTAG chain problems.
   • Natalia working on GUI for testing. Currently placeholder, she's waiting for information from Fred to put in real code.
   • When asked by Jimmy, Fred says they are currently 3 weeks behind schedule (I think with respect to the schedule presented in August.)
   • Fred estimates he will be able to send all data to the alpha by November.
   • Fred plans to spend 4/7 days/week at B0 until the board is working.

Oct 4, 2002

1. Test stand status - Cheng-Ju
2. Pulsar Status - Sakari
3. Alpha firmware status - Stephen

Sept 27, 2002

Sept 20, 2002

1. Readout lists: Tests indicated that TSID and TMPD agree but are attached to one event later than expected in the TL2D. Andrew M. is investigating.
2. Dynamic Prescaling: ready to run in parasitic mode to gather more information about program and its predictions.
3. TrigMon: Isolist and Clist plots fixed. Carla sees error in her TrigMon log file, which is not understood.
4. JDL reports that the L1 CMU-CMU trigger rate has gone up by 50%. Eric James has investigated but no cause is evident. Will request test run to get data to check this out.
5. ModSim simulation- Michael Schmidt
6. SVT status - Marco R.

Sept 13, 2002

1. Readout lists- Greg, Arnd and Peter tested readout lists. We managed to send ROL from the L2 Alpha to the TS to the FE crates. TrigMon subscribed to and received only events with the appropriate ROL. Offline analysis showed that the TSID and TMPD banks agreed (up to one discrepancy) what the ROL should be. TL2D was mysteriously zero in all but one case (though the Alpha sets the ROL?), though this is only a cross-check (and we think we understand why it wasn't getting filled.)
2. Dynamic Prescales- Ke is to check how the rates are calculated and we will rerun the DPS code in a non-intrusive fashion to learn what it is doing.
3. TOF trigger- Mike M.
   • VME readout problems persist
   • LVDS termination problems fixed by going to new resistor values - all will be updated to that value shortly.
   • ADMEM->TOTRIB connection working, TOTRIB->Muon matchbox next step.
     • Data from TOTRIB not getting to matchbox. Clock problem which is understood.
4. Timing in the diffractive triggers- Koji and Carla. Plan is to use "spy cable" and scope to see what the timing currently is to understand the current situation.
5. L2 update- Stephen
   • Rewrite main loop code like state machine before going to new firmware
   • TrigMon shows CLIST problem in last week - is actually a problem in TrigMon that will get fixed shortly. Restarting TrigMon is a workaround.
   • DCAS backplane swap still outstanding
   • Switch Isolation to only Pass 1 clusters is still in the wings pending a fix to TrigMon to correctly deal with this situation.

Sept 6, 2002

Aug 30, 2002

1. L1 cal trigger access report - Carla/Peter
2. Summary of Alpha work this week - Stephen
3. Implementing Readout List:
   • Status and Plan - Tom
   • ROL and the BSC - Koji
   • ROL and the XTRP - Nathan
   • ROL and the XFT - Cheng-Ju

Aug 23, 2002

1. Progress report and near term plan for L2 Muon card - Fred N.
2. Status of the L2 calorimeter trigger
   • Clustering - Monica
   • Isolation - Steve K
3. MODSIM Simulation of CDF II Trigger/DAQ - Michael S.

Aug 18, 2002

1. News and L1, L2 system reports - All
2. Status of and plan for timing in BSC and miniplug for diffractive triggers - Koji and Carla

Aug 9, 2002

1. Status Report on TOF trigger timing
   • Mike reports that timing in real data is consistent with B0 tests
   • Timing is ok, more more internal clock cycle delay than expected - gives some extra flexbility
   • Muon path is timed in at input to muon trigger system
   • Need TriggerDB interface to load thresholds
2. Status Report on Diffractive Trigger Timing
   • No one attended; nothing reported
3. Status Report on TOF/Diffractive PreFRED firmware
   • Carla will implement new timings
4. Proposal for a new Forward Gap + TOF trigger. Mike Albrow presented a new trigger (see CDF5360). This is a feasible L1 scenario:
   • More than one TOF hit
   • Veto on either BSC counter (see GAP trigger)
   • Veto on energy in Miniplug inner ring
   • Veto on any CLC counter being hit
     • Only possible if we can give up the BSC min bias trigger
   He will report back with some preliminary numbers based on this.

Aug 2, 2002

• XTRP firmware duplicate track removal fix (handle 3 vs 4 layer tracks correctly) looks good, should be used starting with next trigger table.
• Discussed TOF/RP trigger timing.
  • Mike Mulhearn's TOETRIB output timing plot
  • Phases look ok, but total number of clock cycle delay different than expected
  • After much to-int and fro-ing, came to the following conclusion:

    	Prefred Input	Current Clock delay	Proposed Clock delay
    0	BSC 1,2	+2	+7
    1	BSC 3,4, RP	+0	+5
    2	MP-E	+2	+7
    3	MP-w	+2	+5
    4-7	COSMIC TOF		0
    8-11	Multi TOF		0

    Also change the total Fred delay to zero (currently +4 +dialin). JDL will make some cables for the TOF trigger.

July 19, 2002

1. L2 Pager Report and Plan
   • There was discussion of the Done Timeout and Decision timeouts that have occured over the last week. The Done Timeout incident is quite strange and the fix was not clear.
   • Matt reported that the SVTLIST board which was installed in crate 0 about 2 weeks ago had the long delay PROM in it by accident! He switched it to the "no-delay" PROM yesterday. We should revisit timing plots made over the past two weeks vis-a-vis total execution times.
2. L1 Calorimeter Status - Maria S
3. TOF Trigger Timing - Mike M
4. Diffractive Trigger Timing - Koji T
   • Diffractive FE Description
5. Diffractive/TOF Timing discussion
   • Koji concluded that the BSC (1/2) and Mini-plug are timed in to each other at the PreFRED input to the same clock cycle (B0 + 15 CDF_CLK). However, the Roman Pots and BSC (3/4) come in 2 clock cycles later. Currently this is handled with a cable delay but will be moved into the PreFRED firmware.
   • Carla has put the 2 clock delay in the formware but was given the wrong channels so she will have to redo it when Michele and/or Koji send the correct infor in writing.
   • Mike thinks that the TOF trigger will come in at the same time as Mini-plug/ BSC or 1 clock earlier. He will make a timing measurement at output of TOTRIB in next day or 2 to confirm. Also will check whether it has the same phase as the Diffractive or is out of phase by 66ns. He thinks he can correct by 66ns in firmware for TOTRIB
   • Mike and Jonathan will write down spec for PreFRED logic to create TOF cosmic trigger so that Carla can implement in firmware.
   • Goal is final firmware next week.

July 12, 2002

1. No Meeting - SVT Trigger Workshop

July 5, 2002

1. No meeting - July 4th Holiday!

June 28, 2002

1. L1 Muon Status - Eric James
   • Found that there is a single bit failure between one Muon Match card and the summary card for the dimuon trigger bit. This bit is used for the case where both legs of a dimuon are in the match card. it looks like it is on the backplane. Rather than rip appart the crate to get at the backplane, Eric will try shifting this to another backplane line in new firmware. This new firmware version is being cretaed to implement CSX usage on some CMX traggers.
2. L2 Muon Interface Status - Fred N.
   • Have sent artwork out for quotes for last mezannine card, 10 day turn all parts are in hand
   • Need to debug Muon Trigger Test Card - Eric is going to work on this on the B0 Muon Teststand
   • Once mezanine card is back can do testing over VME
3. L2 Pulsar Status - Ted Liu
4. L2 Decision Status and Work Plan

June 21, 2002

1. L2 Optimization

June 14, 2002

1. Meeting Cancelled

June 7, 2002

1. L2 Work Reports:
   • TTL Conversion - Greg, Matt, Natalia...
   • Alpha Firmware Tests - Stephen
2. L2 Pulsar Firmware - Peter W.
3. L2 Muon Interface Status - Fred N.

May 31, 2002

1. No meeting - collaboration meeting

May 24, 2002

1. L2 Pulsar Mezannine Card Status - Natalia K.
2. Trigmon XFT Plots Update - Cheng-Ju
3. L2 Status Reports
4. L1 Status Reports
5. L1 and L2 work plans for June Shutdown

May 17, 2002

1. DCAS backplanes: past, present and future
2. Performance of improved RECES with beam and MBUS arbitration
3. L2 latency with (beam and Si and) MBUS arbitration
4. L1 and L2 work plans for June Shutdown

May 10, 2002

1. RECES Test Results - Masa
2. L2 Pulsar Status Report - Ted Liu
3. L1 Status Reports - ran out of time

May 3, 2002

1. L2 Pager Report
2. Update on MagicBus Tests - Stephen, Greg, Matt...
3. Status of L2 Trigmon Improvements - Nate G
4. Status of L2 Cal (ncl ISO)
5. SVT Status - Luciano
   • Waiting for SVX to be turned on again!
6. L1 Cal Status
7. XFT Status
8. XTRP Status
9. L1 Muon Status

April 26, 2002

1. L2 Pager Report - Matt
2. Update on MagicBus Tests - Stephen, Greg, Matt...
3. Status of Signal Splitting - Peter, Jonathan, Greg
4. Status of Trigmon Improvements - Matt, Nate G, Greg, Peter
5. L1 News

April 19, 2002

1. L2 Pager Report
2. Update on MagicBus Tests - Stephen, Greg, Matt...
3. Status of Trigmon Imnprovements - Matt, Nate G, Greg, Peter
4. L2 Muon Interface Status - Fred Niell

April 12, 2002

1. L2 Pager Report - Matt
2. Update on MagicBus Tests - Stephen, Greg, Matt...
3. Status of Signal Splitting - Peter, Jonathan, Greg
4. Status of Trigmon Imnprovements - Matt, Nate G, Greg, Peter
5. L1 News

April 5, 2002

1. L2 Pager Report
2. Update on MagicBus Tests - Stephen, Greg, Matt...
3. Status of Signal Splitting - Peter, Jonathan
4. L1 News

March 29, 2002

1. L1 Activities
2. L2 Pager Report
3. Update on MagicBus Tests - Stephen, Greg, Matt...
4. Status of Signal Splitting - Peter, Jonathan
5. Status of L1 TOF Trigger Board - Mike Mulhearn

March 22, 2002

1. L2 Pager Report - Peter W
2. Update on MagicBus Tests - Stephen, Greg, Matt...
3. Status of Signal Splitting - Peter, Jonathan

March 15, 2002

1. Update on MagicBus Tests - Stephen (also in PowerPoint)
   • During the discussion Mike Lindgren asked about the plans for splitters and whether the PECL tests of the new backplane could be exectuted in the lower crate if the splitter plan was completed.
   • Greg and Peter agreed to make a plan in the afternoon and circulate it via email ( See L2 mail archive )
2. Calorimeter Trigger Monitoring - Peter/Greg/Carla

March 8, 2002

1. Update on MagicBus Tests - Stephen, Matt, Greg
2. Plans for Monitoring and GoodRun List - Greg
3. Calorimeter Trigger Monitoring - Peter - see March 15, 2002

March 1, 2002

1. Update on MagicBus Tests - Stephen, Matt, Greg
2. Update on Trigger Database - Jonathan for Peter

Feb 22, 2002

1. Level 2 Teststand design:
   • Design and Uses of L2 Pulsar - Ted
   • Design and uses of Magical Mystery Board - Bill
2. Level 2 Teststand Needs - Board designers
   • CLIST -Monica
   • ISOLIST - Steve
   • TrackList - Jane
   • RECES - Masa
   • L1 - Greg
   • L2 Muon - Stephen

Nov 29, 2001

1. L1 News
   • FRED - Greg reported that he has a new suspect for the problems with scaler prescale values: there is "bounce" on the edges of the signals between FRED and the Scaler crate. They are going to try different values for pull down resistors at the scaler crate.
   • L1 CAL - Carla has seen some rare errors in L1 Calorimeter data processing. She does not have an explanation and is continuing to search for similar events.
   • XFT - Jay reported that they have done verification tests on the TDC/XTC connection to Finders. This included a scan of the timing parameters on the XTC cards. They replaced a few XTC where they did not respond correctly with timing settings different from the current set. Evelyn reported that they have done successful Finder->Linker->XTRP tests with the new XTRP Data boards in place.
   • XTRP - Kevin reported that they have seen 3 flaky bits in the Linker->XTRP tests. These are associated with a marginal connection between the data board and the P2 backplane connector. They only occur on the outer row of the connector. We will need to explore possibilities of swapping crate etc. They have seen similar problem in Urbana.
   • Muon Trigger - CSP primitives have been commissioned. Work on new FPGA code is awaiting a decision from Jonathan and Peter on what the next step is. A plan was made for a meeting between Eric, Jonathan, Peter and Kevin to come up with a plan at 4pm.  Summary of plan 4pm Muon/XTRP meeting:
     1. The XTRP extrapolation map generation will switch to tighter windows (smaller K-factor).  This should help reduce the muon trigger rates.  Timescale: 1 week.
     2. The next change in muon Matchbox FPGA code will keep the same bit assignments as the ones used for the last few months.  The only change that  to be implemented will be the change in tower separation cut for the CMU-CMU dimuon triggers.  CMU-CMX will still be done in FRED not the matchbox.  This will not require any change in the Trigger Database or database Java code.  Time scale: 2 weeks (in time for 4718 light).
     3. Include Two Track trigger in Trigger DB and validation code.  Need spec by Dec 6 (Peter). New cuts and parameters and Java code by Alexei.  At the same time we will swith the PreFRED bit assignments for the track trigger to use the first 8 bits on each cable and ignore the last 2.  Time scale: 3 weeks.
     4. Get Trigger FPGA versioning in databases in order.  Time scale: Jan 2002
     5. Write new muon Trigger DB validation code that is more flexible. Time scale: Feb 2002
     6. Write new Matchbox FPGA code that implements all planned features including CMU-CMX and potentially more thresholds.  Time scale: Feb 2002
2. L2 News - reported by Stephen, Monica and Steve K
   • Ran last night with beam about 2M events Jet cutting: 3 Alphas, L1, CLIST, ISOLIST, SVTlist, 4 RECES (not being readout).
   • Cluster-finder was seeing errors at a little less than 1% of events. These were not seen in Cosmics. Get unstable eta-phi information on the cluster. Monica thinks this is related to LOCOS fix from last week which got the CF to a state of zero errors with Cosmics. (Note that by 11/30 had gotten to a state with no CLIST errors when running with beam)
   • ISOLIST - has same 0.3% error rate reported before. In this run also had errors that are probably associated with the above clustering errors.
   • RECES - Masa has tested the 2 spare board and they are working correctly.
   • RECES Readout problems: Stephen and Masa have done tests on the readout problems. With Arnd's fix of do multiple trys of reading Alpha on buss-error still have some problems. (At Friday's L2 meeting Stephen reported that he thinks he can probably fix this in the FPGA... it will take some time to study in teststand.)
   • New Magic Bus - One board was delivered to Fermilab this week for connector installation. Monica will take this back to Michigan Friday for testing by Myron and Stephen. The second backplane will be shipped overnight to Fermilab on Friday for connector installation and tests in the lower crate next week.

Nov 22, 2001

Nov 15, 2001

1. News
   • Steve Kuhlmann reported on a run taken with L2 containing L1, ISOLIST and two TrackLIST boards but no CLIST. He still sees signs of cluster merging in ISOLIST but without CLIST cannot confirm. In 53K events got only 1 event with an error on ISO Sum 1. No Trak or L1 error reported.
   • Bill Ashmanskas reported on the SVX+SVT tests.
     • Ran 1 SVX wedge at 28kHz with no problems in SVT
     • Ran with same wedge readl-all on Z side, verified that readout abort in FIB works
     • Ran successfully with 10 wedges at about 20kHz. But did not explore whether/where there may be rate limits.
     • Had errors about 1 every 10 minutes from what looked like bad data confusing both SVT and SVX readout chain.
     • Bent pin on one FIB crate which had caused continuous problems before has been fixed.
     • SVX plans integration run on Sunday
   • Nathan reported that XTRP is now running with all new data boards
   • Greg Feild is presenting the L1 status at the Commissioning Meeting
2. Status of L2 Muon Interface- Fred Niell
   • Plan to build 20 mezzanine cards of which 15 PCBs are in hand and parts are in hand for 5.
   • Plan to build 3 main 9U boards: 1 in crate and 2 spares
   • Hans Jensen asked how much money will be needed to complete the project: Fred responded about $25K and Myron responded less than $25K
   • Several people seriously questioned the wisdom of doing BGA assembly in-house. Fred responded that Michiagn has had poor experience having BGA assembly done. Mel and Bill A pointed out that Chicago has had many BGA chips (over 100?) mounted for PreFRED and SVT with minimal problems.
3. Getting Close to cdf4718 without the L2 Muons Interface- Jonathan

Nov 8, 2001

1. News
   • Carla reported on a study of the effect of the proposed CEM spike killer (see Oct 25th). She has written a simulation of the spike killer and ran it on a cosmic ray run with a 5 GeV SUMET trigger. Of 22K events in the run approximately 20K were removed by the spike killer. This is essentially the same number of events as she classified as spikes from an assymetry cut. She is working with the QCD group to look at the efficiency for Jet triggers.
   • Peter suggested that we may want to change from 2 MET thresholds and 2 SUMET thresholds at L1 to 3 MET and 1 SUMET to move a L2 cut to L1. Carla and Mel pointed out the TriggerDB and monitoring code would need to be changed (much more work than the firmware). As of Nov 9 this proposal has been dropped.
   • Steve Kuhlmann reported on the status of Isolation Trigger and Stephen Miller on other L2 status. There comments are almost completely contained in Stephens report at the Commissioning meeting .
   • After discussion of delays in new Magic Bus it was decided to set up the tests in the lower crate so as not to interfere with ongoing L2 operations.
   • Luciano reported that the SVT group is working on studying the efficiency of SVT. He reported on this in datail in the Trigger and Dataset Working Group Meeting following this meeting.

Nov 1, 2001

1. News:
   • XTRP - testing new data boards in Urbana. Improved teststand should result in fewer problems at B0. Expect to start bringing boards to B0 week of Nov 5. Only a few solder problems on new boards.
   • Eric will start on new Muon Trigger FPGAs this week.
2. XFT Database Use: what goes in HDW, Run Cond or Trigger - Evelyn T
   • XFT Pt Bin definitions are not currently in DB anywhere
   • These are used by XTRP, SVT, L2
   • Will probably store in Hardware DB since all other XFT config is there
   • Bill suggests storing integer for where Integer = const/(pt bin)
   • Jonathan would like to see real number pt bins as well
   • Will spell out a spec outside the meeting.
   • Ken points out that XTRC T0s are also in DB. Jonathan points out that may want some canonical value for simulation rather than each individual one.
3. SVT Database Use: what goes in HDW, Run Cond or Trigger - Bill A

Oct 25, 2001

1. News
   • Peter described a problem with how pedestals are handled in the ADMEMs for the trigger path. The effect is very subtle. This problem was reported at the Calorimeter meeting yesterday along with a plan for a CEM PMT spike killer algorithm for the ADMEM trigger FPGA. This was also shown at the following TDSWG. Report on Spike Killer and Pedestal problem .
2. Global Parameters for Trigger Database - Discussion led by Peter
   • The main outcome of the discussion was that we clearly need to hear more from different Trigger Subsystems on what parameters should be treated globally in the Trigger Database and a specification needs to be put together.

Oct 18, 2001

1. News - L1 and L2
2. Proposals for New L2 Teststand Boards:
   • Spec for Data Source for Interface Boards - Ted L
   • Spec for Data Sink for Interface Boards (Magical Mystery Board) - Bill A
     • Slide 1 , Slide 2 , Slide 3
     • Pleminary specification Document .

Oct 11, 2001

1. News
   • Evelyn reported that the XFT group did a test using the dead wire list. They turned on 5 wires in a bad COT cell. Before the test the segement efficiency was about 40% low in this region. The tracks were about 30% low. After the correction there is abump in the number of segments found but the effiency comes back and there is no significant increase in fakes.
   • Eric reported that he plugged in 30 degrees of one side of the BMU and timed it in for the last store.
2. Status of L2SIM And L2MON - Nathan G
3. Discussion of Validating L1 Functionality
   • L1 function in last 3 months data
   • Improving L1 monitoring/validation

Oct 4, 2001

1. No Meeting

Sept 27, 2001

1. News
2. Are we ready to cut on Jets?
   • Cluster Finder/CLIST - Heather/Monica/Stephen
   • Error Handling - Peter W
     • Peter reported that the error handling code is ready. Synch errors from the L1 Interface or CLIST will cause a L2 timeout (no L2A or L2R sent to TS). Errors from XTRPlist and SVTlist will be ignored for the moment.
   • Automated HRR - Arnd/Jim/Frank
     • Automated error recovery works. It takes 8 seconds from receipt of message by error handler. Currently if 2nd error of same type occurs it will not autorecover. We will start L2 cutting without using automated recover since we think error rate will be small. New TDC front-end code should be tolerant of HRR during readout. Need to test this during shutdown.
   • Jet Validation - Rob/Frank

Sept 20, 2001

1. News

Sept 13, 2001

1. News
   • Monica reported that she found that the last Synch errors from the Cluster finder are not coming from CLIST but a missing End-of-event word from CLIQUE. A cluster seems to get lost and the CF gets out of synch. She new CLIQUE firmware to test with beam.
   • Jet trigger code: Rob Snihur (QCD group) is working on validating along with Stephen Miller.
   • Nathan reported major progress on the XTRP synch problem. They have definitively shown that there is an interference between DAQ readout of the databoards and forming the list for L2. Disabled all DAQ readout at this time. Currently have first 8 wedges sending data to L2. Need beam to confirm that this fixes the L2 data problems.
2. MagicBus Measurements - Myron (TBC)

Sept 6, 2001

1. News
   • Carla - working on timing in BSC triggers to PreFRED
   • XFT - New monitoring job run offline that updates a web page by run number with effiencies etc
   • XTRP - New warm-start code so that it will work after partition (don't always have to do coldstart.
   • Muon - Moving loading of FRAM for FPGAs to using the database
   • L2 Tracklist - resets have been fixed.
2. Status of L1 Track Trigger Tests - Kevin Pitts

Aug 30, 2001

1. News
2. XTRP Initialization - Nathan Eddy

Aug 23, 2001

1. News
2. L1 Muon Trigger Initialization - Eric James

Aug 16, 2001

1. News
2. L1 Muon Trigger Status - Eric James

Aug 9, 2001

1. News

July 19, 2001

1. News
2. Suggestions for Improving TRIGMON - Jonathan Lewis

July 12, 2001

1. News

July, 5 2001

1. No Meeting

June 28, 2001

1. XTRP Signoff for New Data Boards - Kevin Pitts
2. News

June 21, 2001

1. News

June 14, 2001

1. News

June 7, 2001

1. News

June 7, 2001

1. News

May 31, 2001

1. Diagnostic/Alternate Readout Lists
   • Introduction - Peter
   • Event Readout Size - Arnd
     • Calorimeter ~70kB with no compression
     • XFFD - 10kB, slow readout. Could drop hits and read segements only. This helps by at least a factor of 2.
     • XTRD - 13 kB, slow readout (complicated and can't do BLT)
     • FDLD - scalers from BSCs, used by YMON
     • CLLD - Luminosity scalers
     • FDLD and CLLD are already handled by a pre-scale in the readout code that only updates the data on a reasonable timescale
   • XFT Needs for Trigger Monitoring - Jong-Young Chung
   • XTRP Needs for Trigger Monitoring (XTRD bank) - Kevin
   • Needs for BSC scalers (FDLD bank) - Koji
   • Needs for CLC (CLLD)
   • Discussion of Implementation Issues and Testing plan with the following representatives:
     • L2 - Stephen M
     • TS - Andrew M
     • Monitoring - Kaori
     • It looks like the the only readout list for which there is currently demand is for Trigger Diagnostics.
     • Banks to be turned off in normal data: XTRD and XFFD (may just drop hit data and keep segments, does this require any bank format change?)
     • Selection will be on L1 bits only and thus can be done in the same L2 alpha processor that creates TL2D.
     • Would like to create one or two Trigger monitor paths that have a mix of L1 triggers and a simple prescale at L2. These would be used for input to Trigmon and would have the "Trigger Dump" readout list.
     • There was some question about when (if?) we will get high bandwidth of selected paths of data through CSL to consumers. Currently get <<1 Hz.
2. L2 Trigger Status and Planning
   • Alpha and system plan - Stephen Miller
   • Cluster finder and CLIST - Heather Ray
   • Isolist - Steve Kuhlman
   • L1 interface - Greg Field
   • L2 muon: (Michigan person). Stephen Miller reported that Fred Niell (Michigan Graduate Student) is working on this again. The board is now in layout with fabrication expected to start about July 1.
   • Reces - Karen Byrum
   • Track board: Jane Nachtman
   • Commissioning Plan - see Stephen Millers talk above.

May 24, 2001

1. Survey of Level 1 and Level Status

May 17, 2001

1. News
2. XTRP Performance in 36x36 Run Data - Kevin
3. Muon Trig Performance in 36x36 Run Data - Eric
4. Web Page Improvements - Peter Wittich (5min)
5. L2 Trigger Plans for Upcoming Run - All (25min)

May 10, 2001

1. News
2. Survey of L2 Diagnostic Software
   • Alphas - Stephen
   • Isolation/ISOLIST - Steve K.
3. XFT Performance in 36x36 Run Data - Evelyn
4. XFT-L3 Track Comparison - Erik Brubaker

May 3, 2001

1. News
2. Survey of L2 Diagnostic Software
   • Alphas - Stephen - email repsonse
   • L1 Interface - Greg
   • Cluster Finder/CLIST - Monica
   • Isolation/ISOLIST - Postponed
   • RECES - Postponed
   • XTRP/SVT Interface - Jane
3. L1 Calorimeter Performance in 36x36 - Carla
4. XFT-L3 Track Comparison - Erik Brubaker

April 26, 2001

1. News
2. Discussion:
   • Trigger Readiness for 36x36
   • Trigger Plan for 36x36

April 19, 2001

1. News
   • Stephen Miller reported that Andrew Martin is working on a problem of how the Silicon DAQ handles TS messages when a L1A and L2A common on the same clock cycle. This is believed to be the cause of TS State 14 errors when both Silicon and the Level 2 crate are included in a run.
   • Peter reported that the "problem" reported last week of tracks from XFT/XTRP appearing for 4 clock cycles in DIRAC (instead of expected 3), is a feature of running with a clock file with 1 BC. The XTC cards reset the bits being sent on BC. If there is only 1 BC the tracks last for 159 clocks. If there are 36 BCs the tracks last for 3 excpet they last all the way through the abort gaps.
2. Trigger Database - Alexei Varganov . Also available in
3. Trigger Table for 36x36 - Peter Wilson . Also available in Power Point.

April 12, 2001

1. News
2. Requests for Trigger Table(s) in 36x36 Stores - Discussion Updated version including comments from meeting.
3. Status of Forward Detector Triggers - Koji Terashi
4. PreFRED Bits for 36x36 - Greg Feild

April 5, 2001

1. News - results from 1x8 Stores
2. Plans for L2 for Next 6 weeks

March 29, 2001 - Trigger Monitoring and Debugging Tools part 2

1. News
2. XTRP Monitoring and Tools - Kevin/Nathan (10 min)
3. Muon Tigger Monitoring and Tools - Eric J (10min)
4. SVT Monitoring and Tools - Marco R (10 min)
5. Cluster Finder Monitoring and Tools - Monica/Steve K (10 min)
6. L2 Decision Monitoring and Tools - Stephen M (10 min)

March 22, 2001

1. News
2. L1 Muon Status
3. XFT Status
4. XTRP Status
5. L1 Cal  Status

March 15, 2001 - Focus on Trigger Monitoring and Debugging Tools

1. News
2. TRIGMON - Matt W
3. TRIGSIM - Simona R
4. L1 Calorimeter and Decision Monitoring and Tools - Carla P
   • Example output text file
5. XFT Montoring and Tools - Jong-Young
6. Example output log file

March 8, 2001

1. News - YKK told us that only a portion of the SVX will be cabled for the end of March running. Currently the cabled region includes wedges 6, 7, and 8 of the Central barrel.
2. L1 Decision Status - Greg F
   • The cofiguration of FRED from the Trigger DB is now working. Greg showed slides of the fames Rate Mon demonstrating the correct configuration of FRED.
   • Also the L1 Interface board in the L2 Decision crate now works. It is not completely clear what was fixed but a production Alpha is in use instead of the preproduction. There is still a problem with the SUMET data however: the SUMEX and SUMEY appear to be swapped.
3. L2 Cal Status - Monica T
   • Plots demonstating cluster finding operation were shown such as Eta and phi distributions of seed, number of towers per cluster etc.
   • Still have cluster hangs after a few hundred or thousands of events. Trying a new FPGA design (this was as failed on Friday see L2 e-log))
4. SVT Status - Bill A
5. L2 Decision Status - Stephen M
   • Alpha hangs - one bug was fixed with FPGA change. Now able to run for many hours without hang.
   • Problem with mismatch of L2 buffers between TS and Alpha - fixed by swap to production Alpha from preproduction. Has slightly faster FPGA and new FPGA code.
   • Doing one more iteration of Alpha artwork before sending out for final production run
6. Discussed agendas for future meetings: agreed to focus on Triger Monitoring and debugging tools for the March 15 and March 29 meetings.

March 1, 2001

1. News
2. Operations Plan: Pagers, Experts Etc - Luciano
3. Plans for B0 VME Teststands - Peter

February 22, 2001

1. News
2. XFT Status - Evelyn
3. XTRP Status - Kevin
4. L1 Calorimeter Status - Maria/Nancy
5. L1 Muon Status - Eric

February 15, 2001

1. News
2. Near Term L1 and L2 Goals - Ted/All
3. TDSWG Request for Triggers - Peter

February 8, 2001

1. Trigger Meeting Plan - Peter
2. XFT Status - Evelyn

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