The 1st Result of Global Commissioning of the ATALS Endcap Muon Trigger System in ATLAS Cavern Takuya SUGIMOTO (Nagoya University) On behalf of TGC Group ~ Contents ~ 1. ATLAS Level1 Trigger 2. Endcap muon trigger system 3. Global Commissioning Run (Milestone-3 run) 4. Results 5. Summary
Introduction
LHC-ATLAS Experiment Barrel muon chamber EM calorimeter Inner tracker 7TeV proton 7TeV proton 25m Solenoid magnet Barrel toroidal magnet 45m Endcap toroidal magnet Hadron calorimeter Endcap muon chamber The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 3
Characteristics Rate reduction: 1GHz 100kHz Decision time: < 2.5μs Only raw electronic signals are used Muon Trigger System Endcap p( (1.05< h <2.4) Thin Gap Chamber (TGC) Barrel ( h <1.05) Resistive Plate Chamber (RPC) Air-core super-conducting toroidal magnet (Endcap and Barrel) ATLAS Level1 Trigger Calorimeter Trigger Front-end Preprocessor Cluster Processor Jet/ Energy-sum Processor Central Trigger Processor TTC Muon Trigger Endcap Muon Barrel Muon Trigger Trigger (TGC based) (RPC based) Muon Trigger/CTP Interface Barrel Toroidal Magnet Endcap Toroidal Magnet TGC1 Big Wheel The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 4
Thin Gap Chamber Structure Similar to MWPC Wire : 50μm gold-plated Tungsten Anode-Cathode Gap : 1.4mm Wire-Wire Gap : 1.8mm 2-dimentional readout (wire, strip) Cathode plane: carbon (~MΩ/cm 2 ) Trapezoidal shape (~2m 2 ) Operation condition Gas : CO 2 + n-c 5 H 12 (55:45) High Voltage : +2.9kV Operation Mode : Limited Proportional Gas Gain : ~10 6 Production and Inspection In total 3600 chambers were produced in Japan (KEK), Israel (Weizmann) and China (1999 2006) The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 5
Big Wheel Endcap Muon Trigger System Triplet (TGC1), middle doublet (TGC2) and pivot doublet (TGC3) Each BW consists of 12 sectors 72 sectors are required. Measurement items muon hit position Rough Pt momentum trigger if Pt > 6GeV 1. Connect the IP and hit point on TGC3 Infinite momentum track 2. Hit signal on TGC1&2 is found in window1&2. Pt > 6GeV 3. Pt information is divided into 6 Pt threshold using LUT. 4. Pt threshold and hit position MUCTPI The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 6
TGC Assembly at CERN 1/12 sector Assembly y( (Oct. 2005 ~ Aug. 2007) (detail T. Kubota's poster) TGC Big Wheel Assembly (Jul. 2006~) Sector Transportation 5 wheels assembled The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 7
Installation of Electronics Modules 22m TGC Big Wheel 19 Mini-Rack + HSC, SSW, HPT (CTM) + LV, HV Optical Fiber (~100m) On-Detector Module + S,, SLB Counting Room (USA15) + CCI, SL, ROD, TTC + VME Crate, SBC The + Optical 1st Result + DCS modules + Optical of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 8
ASICs for TGC Electronics TGC1 TGC2 TGC3 ASD PS-Board on TGC chambers Doublets SLB ASIC 3/4 Coin. Readout JRC DCS-PS HSC(VME) (Big Wheel edge) H-Pt wire H-Pt strip VME64 Crates (USA15) Trigger crate Sector Logic Readout crate H-Pt ASD ASD ASD card Triplet Service SLB ASIC 2/3 Coin. Readout JRC DCS-PS CAN TTC signal fanout to PS-Boards TTCrq SSW HSC DCS LCS SLB ROD Control crate CCI TTCvi PS Board H-Pt Board The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 9
Antifuse FPGAs for TGC Electronics conv TGC1 TGC2 TGC3 ASD ASD JRC PS Board PS-Board on TGC chambers Doublets SSWRX SLB ASIC 2/3 Coin. Readout JRC Triplet DCS-PS SLB ASIC 3/4 Coin. Readout JRC DCS-PS VME HSC(VME) (Big Wheel edge) H-Pt wire H-Pt strip SSW HSC VME64 Crates (USA15) Trigger crate Sector Logic Readout crate ROD Control crate CCI VME H-Pt Board VME TTCvi Service CAN TTC signal fanout to PS-Boards TTCrq SSWTX SSW Board HSC Board The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 10
Global Commissioning
TGC for Global Commissioning Run <Main purpose of Global Commissioning> 1. Provide Trigger Signal to whole sub-detectors mainly MDT EndCap 2. Read out TGC data via ROD-ROS link 3. Join TGC segment to the ATLAS central DAQ system MDT TGC1 TGC1 Sector 09 Chamber condition + Gas: CO 2 100% + HV: 2.8kV + Eff: ~20% The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 12
TGC Electronics TGC1 TGC2 TGC3 On TGC chambers Big Wheel edge Counting Room ASD ASD PS-Board Doublets Triplet Service SLB ASIC 3/4 Coin. Readout JRC DCS-PS SLB ASIC 2/3 Coin. Readout JRC DCS-PS CAN TTC signal fanout to PS-Boards TTCrq HSC(VME) crate H-Pt wire H-Pt strip SSW HSC DCS LCS R φ VME64 crates Trigger crate Sector Logic Readout crate ROD Control crate CCI TTCvi Trigger MUCTPI Readout ROB Control TTC CTP The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 13
Setup for Global Commissioning TGC1 On TGC chambers Big Wheel edge Counting Room Specially designed modules instead of HPT HSC(VME) crate CTM VME64 crates Trigger crate Sector Logic Trigger MUCTPI ASD μ 1-station coincidence Triplet Service SLB ASIC 2/3 Coin. Readout JRC DCS-PS CAN SSW HSC DCS LCS Readout crate ROD Control crate CCI TTCvi Readout ROB Control TTC CTP TTCrq The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 14
Commissioning Trigger Module (CTM) Functionality 11 FPGAs XILINX SPARTAN XC2S50E 10 are used for Rx (LVDS). Take all OR, mask any inputs 1i is used dfor Tx (NIM). CPLD: VME control. XILINX XC2C256P Input From PS boards (LVDS) VME Rx Purpose Trigger output is asserted by all trigger matrices on SLB ASIC. Usable to give 1-station trigger signal It is impossible for HPT Various trigger pattern by input mask wire only / strip only / wire & strip Output To SL (NIM) Tx The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 15
Local Trigger Path TGC1 On TGC chambers Big Wheel edge Counting Room HSC(VME) crate CTM VME64 crates Trigger crate Sector Logic No logic No LUT Fixed Pt Readout crate ASD 1-station coincidence Triplet SLB ASIC 2/3 Coin. Readout JRC DCS-PS SSW HSC ROD Control crate CCI L1A TTCvi Service CAN TTCrq The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 16
Vth vs Trigger Rate half sector 2/3 coincidence (wire) Gas: CO 2 100% HV: 2.8kV good separation between S/N with threshold of 100mV finally, we got stable 8Hz of trigger from FULL TGC1 sector9 and fed them to CTP ( they found it in their system ) The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 17
Control Path TGC1 On TGC chambers Big Wheel edge Counting Room CCI-HSC link Optical communication module CCI: VME Slave HSC: VME Master JRC (Jtag Route Controller) ASD Triplet Service SLB ASIC 2/3 Coin. Readout JRC DCS-PS CAN TTC signal fanout to PS-Boards TTCrq HSC(VME) crate CTM VME Pro otocol St tandard SSW HSC DCS LCS Reset VME64 crates Trigger crate Sector Logic Readout crate ROD Control crate CCI TTCvi SBC Control The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 18
Global Trigger Path TGC1 On TGC chambers Big Wheel edge Counting Room HSC(VME) crate CTM VME64 crates Trigger crate Sector Logic No logic No LUT Fixed Pt MUCTPI Readout crate ASD Triplet SLB ASIC 2/3 Coin. Readout JRC DCS-PS SSW HSC ROD Control crate CCI CTP L1A Clock TTCvi Service TTC signal fanout to PS-Boards CAN TTCrq L1A Clock MDT-EC The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 19
TDC Distribution of MDT RPC TGC+MDT Δt = t TGC t RPC t TOF ~ 130nsec TGC RPC TOF Provide Trigger to whole ATLAS system!! The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 20
Track Reconstruction by MDT The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 21
Readout Path TGC1 On TGC chambers Big Wheel edge Counting Room ASD Local readout system Special dump module for SSW data (spy mode) Used for quick check w/o ROD Triplet Service SLB ASIC 2/3 Coin. Readout JRC DCS-PS CAN TTC signal fanout to PS-Boards TTCrq HSC(VME) crate CTM SSW HSC L1A, Clock VME64 crates Trigger crate Sector Logic Readout crate ROD Control crate CCI TTCvi Readout ROB Local Readout The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 22 CTP
Measurement of L1A latency Test Pulse with Track Pattern L1A Signal L1Buffer SSW Local Readout system 2/3 CTM SL count layer1 layer2 layer3 ch SLB ASIC CTP MUCTPI + TTC L1A Latency is 76 clocks = 1.90 μsec (< 2.5 μsec) Estimation: 75clk (by O.Sasaki, 2004) The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 23
layer1 layer2 Hit Profile for cosmic-ray test Wire Hit Profile of Endcap Region T5 T6 T7 T8 2/3 coincidence (wire) Vth = 100mV Gas: CO 2 100% HV: 2.8kV layer3 layer1 layer2 Strip Hit Profile of Endcap Region T5 T6 T7 T8 ch ( = R) first data taken by local Readout path chambers are working fine We are triggering cosmic-muons trigger & readout path are working fine!! The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 24
Summary Provide trigger signal to ATLAS global DAQ system TGC1 sector was used. 1station ti coincidence id CTM board instead of HPT board Cosmic ray muons are triggered successfully in ATLAS cavern. Trigger & Readout path are working fine. Measured latency is consistent with estimated value (1.9μsec) MDT reconstructed the cosmic muon trajectory using TGC trigger. Plan toward Physics Run Extend number of operational sectors 3station coincidence run done during the latest commissioning run Timing Adjustment between stations. Beam halo & single beam run Full system operation should be tested before starting physics run!! The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 25
Backup slides
Trigger Logic The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 27
Multiplicity Distribution (events triggered by TGC) Wire + Strip wire Strip running with CO2 reasonable Wire + Strip ( log ) The 1st Result of Global Commissioning of the ATLAS Endcap Muon Trigger System in ATAS Cavern 28