David Berge Raffaele Giordano George Glonti George Iakovidis

+ David Berge, Raffaele Giordano, George Glonti, George Iakovidis, Paolo Iengo, Vincenzo Izzo, Yousuke Kataoka, Kostas Kordas, Antonios Leisos, Stefanos Leontsinis, Sabrina Perrella, Givi Sekhniaidze, Ourania Sidiropoulou, Mimmo della Volpe, Andre Zibell, SRS development: Hans Muller, Sorin Martoiu, Alfonso Martinez (ALICE) Marcin Byszewski On behalf of the MAMMA collaboration. Running Micromegas in ATLAS: status update of DAQ integration and plans 2/10/2012 RD 51 Stony Brook M. Byszewski (CERN)

+ 2 The Goal Compare data from the test chambers with ATLAS data (take these data with no impact on ATLAS data taking) Stand-alone, random trigger (until September 2012) 1. n Convenient, Track matching not possible Trigger from ATLAS, data separate (‘parasitic’) 2. n Offline synchronisation Fully integrated with TDAQ in ATLAS partition 3. n Most of our event fragments empty A lot of discussions and support from CTP / TDAQ / run coordination / Sysadmins. Thank you. M. Byszewski (CERN) 2/10/2012 RD 51 Stony Brook

+ 3 Micromegas test chambers Installed Feb 2012, read out in stand-alone random trigger mode Test chambers description and readout in stand alone mode see Joerg Wotschack’s presentation in Run Weekly 24/7/2012 https: //indico. cern. ch/conference. Display. py? conf. Id=194946 MBTS, side A n n Small Wheel, sec. 9, side A, CSC Front of the LAr calorimeter cryo n r≈1 m n z = 3. 5 m One 9 x 4. 5 cm 2 n X-V (2 readout gas gaps) n n r = 1. 7 -1. 8 m Four 9 x 9 cm 2 chambers n X, Y, XUV n Only three read out n 1 FEC limit n Power supply limits and SRU firmware LAr EIL 1 MDTs MBTS M. Byszewski (CERN) 2/10/2012 RD 51 Stony Brook

150 mm MBT chambers (LAr ecal) MBTS R≈1 m APV 25 Drift electrode 200 mm MBT 0 2 drift gaps of 4. 5 mm each 2 x 190 x(phi)-strips (0. 5 mm pitch) 2 x 66 v-strips (1. 5 mm pitch) MBT 0_3 Active area 9. 5 x 4. 5 cm 2 LAr Calor. Z ≈ 3. 5 m MBT 0_4 15 mm 2/10/2012 RD 51 Stony Brook J. Wotschack (CERN) 4

MMs on Small Wheel II R 13 x R 16 xy R 16 Not yet read out R 19 xuv R 18 y CSC (large) 90 mm Pitch (µm) R 13–R 18 250 R 19 x 350 R 19 u, v 100 2/10/2012 RD 51 Stony Brook R 16, chamber with 2 D readout active area: 9 x 9 cm 2 J. Wotschack (CERN) 5

+ Some typical events displays 6 L = 3. 3 x 1030 cm-2 s-1 L = 3. 3 x 1033 cm-2 s-1 (≈1/1000 triggers with activity) (≈each trigger with activity) Time (25 ns) Charge Time (25 ns) MBT 0_3 Uncorrelated hit x strip number J. Wotschack (CERN) Time (25 ns) Charge Time (25 ns) MBT 0_4 x strip number 2/10/2012 RD 51 Stony Brook

+ 7 Rates / Occupancy / data size MBT 0 n n Rates: n ≈20 k. Hz/cm 2 @ L=1033 cm-2 s-1 n 7 strips (16 time bins) 10 k. Hz readout n (100 k. Hz * 0. 1 due to slow readout) n Up to 10 MB/s by varying time window and data reduction mode (36 GB/h) n Total data: for 10 weeks, 5 days, 10 h runs 17 TB of LV 1 data M. Byszewski (CERN) SW n Rate: n 30 Hz/cm 2 @ L = 1033 cm-2 s- n Majority (90%) of events with uncorrelated hits 1 2/10/2012 RD 51 Stony Brook

+ 8 Current readout: ½ ROD n SRS – based ROD: n RD 51’s SRS system https: //espace. cern. ch/rd 51 -wg 5/srs/default. aspx n APV 25 chips (CMS Si tracker) (16+4) n HDMI cables (10) n SRS FEC (ADC, Ethernet) n Data to a DAQ PC in USA 15 n mm. DAQ / RECOmm UX 15 APV 25 HDMI M. Byszewski (CERN) FEC (ADC/Eth ernet) USA 15 Ethernet fibre Slow control + Data Switch (Cu Optical) Cu DAQ PC 2/10/2012 RD 51 Stony Brook

+ 9 SRS – based Readout n n n Front end electronics: n APV 25 chips (CMS tracker, no other choice) n HDMI cables (LV, data) ROD in UX 15: n SRS FEC – digitization, peak finding, zero suppression n DTC link to SRU n SRU – EB, TTC, LV 1, DCS , SLINK USA 15 n CSC TTC, DATA, DTC fibres n Run Control Application (on RC PC) n ROS n DCS(ACR Muon Desk, CSC infrastructure) USA 15 Ctrl UX 15 ROD APV 25 FEC (ADC/Eth ernet) Switch (Cu Optical) SRU RC PC ROS Local SLINK TTC CSC M. Byszewski (CERN) 2/10/2012 RD 51 Stony Brook

+ 10 Configuration n Not in ATLAS partition n There is no way of getting LV 2/EF information to our ROS (event selection) n MM partition fully described in TDAQ OKS database n Reading out 10% of LV 1 triggers (slow APV data transfer) n Pre-selection on SRU possible n n Send only events with APV data n Possibly select on FEC event size Store all read out data n Switch to SW-only readout n We could switch back to TDAQ-compliance mode, if we want n into fully integrated mode n and serve all LV 1 if in ATLAS partition ROD (1) APV 25 M. Byszewski (CERN) FEC (ADC/Eth ernet) SRU ROS 2/10/2012 RD 51 Stony Brook

+ 11 Run Modes n n n Castor EOS ATL CTRL net Physics n ATLAS LV 1, 10% n Data to SLink-ROS-RC PC-HDD n Offline synchronisation of LV 1 n Throttled data transfer to storage (Castor) n All APV / SW-only runs l ro nt w o Sl Off-run n Internal / CSC triggers n On FEC measurement of ZS pedestals n RC PC storage of pedestals (read from FEC) APV calibration (rare) n Internal triggers n ZS in bypass mode n SRU in bypass mode to Ethernet port n Display / Verify raw APV frames M. Byszewski (CERN) co Local ETH Calibration n Throttled ctrl RC Eth RO S SLINK CSC TTC SRU FEC 2/10/2012 RD 51 Stony Brook

+ 12 Run Modes n n n Castor EOS ATL CTRL net Physics n ATLAS LV 1, 10% n Data to SLink-ROS-RC PC-HDD n Offline synchronisation of LV 1 n Throttled data transfer to storage (Castor) n All APV / SW-only runs l ro nt w o Sl Off-run n Internal / CSC triggers n On FEC measurement of ZS pedestals n RC PC storage of pedestals (read from FEC) APV calibration (rare) n Internal triggers n ZS in bypass mode n SRU in bypass mode to Ethernet port n Display / Verify raw APV frames M. Byszewski (CERN) co Local ETH Calibration n Throttled ctrl RC Eth RO S SLINK CSC TTC SRU FEC 2/10/2012 RD 51 Stony Brook

+ 13 Run Modes n n n Castor EOS ATL CTRL net Physics n ATLAS LV 1, 10% n Data to SLink-ROS-RC PC-HDD n Offline synchronisation of LV 1 n Throttled data transfer to storage (Castor) n All APV / SW-only runs l ro nt w o Sl Off-run n Internal / CSC triggers n On FEC measurement of ZS pedestals n RC PC storage of pedestals (read from FEC) APV calibration (rare runs) n Internal triggers n FEC ZS in bypass mode (RAW data of one APV) n SRU in bypass mode (to Ethernet port) n Display / Verify raw APV frames M. Byszewski (CERN) co Local ETH Calibration n Throttled ctrl RC Eth RO S SLINK CSC TTC SRU FEC 2/10/2012 RD 51 Stony Brook

+ 14 Offline synchronisation Castor EOS ATL CTRL net n Before data analysis n Save all RAW events n n ATLAS synchronisation at our convenience n Max of 16 TB of data (SW+MBTS) for 10 weeks of 10 h ATLAS runs daily (SW+ MBT 0) n We will get that space n Throttled speed of output to storage will limit data taking Throttled RC Dedicated SW-only runs n This data will by compared to ATLAS data M. Byszewski (CERN) 2/10/2012 RD 51 Stony Brook

+ 15 Current status n ATLAS compliant ROD based on SRS n n Readout synchronised with ATLAS triggers n n n But run in a different mode There is no way of getting LV 2/EF information from TDAQ 1 FEC (MBT 0 + SW chambers) n Power supply n To be switched to SW only RC-PC with storage space is being prepared n Time to debug M. Byszewski (CERN) 2/10/2012 RD 51 Stony Brook

+ 16 Next steps: to data analysis n Run planning to be made (9 weeks) n n n DAQ commissioning ü n n MBT 0/SW runs dedicated SW runs (re-cabling 4 th chamber) Verify APV settings (raw data) Verify FEC ZS pedestals Stability (not to disturb the Muon shifter’s sleep) Write data decoder (ATLAS -> ROOT for Event. Browser) Data preparation / Offline Synchronisation n n Select based on Timestamp + LV 1 ID (ATLAS and MM) Select events with CSC tracks ATHENA jobs mm. DAQ root files feed to RECOmm n Data analysis n (Write Manual / Documentation) M. Byszewski (CERN) 2/10/2012 RD 51 Stony Brook

+ 17 Next steps: to data analysis n Run planning to be made (9 weeks) n n n DAQ commissioning ü n n MBT 0/SW runs dedicated SW runs (re-cabling 4 th chamber) Verify APV settings (raw data) Verify FEC ZS pedestals Stability (not to disturb the Muon shifter’s sleep) Write data decoder (ATLAS -> ROOT for Event. Browser) Data preparation / Offline Synchronisation n n Select based on Timestamp + LV 1 ID (ATLAS and MM) Select events with CSC tracks ATHENA jobs mm. DAQ root files feed to RECOmm n Data analysis n (Write Manual / Documentation) Thank you M. Byszewski (CERN) 2/10/2012 RD 51 Stony Brook

+ 18 Backup slides M. Byszewski (CERN) 2/10/2012 RD 51 Stony Brook

Micromegas principle § With drift velocities of 5 cm/µs (or 20 ns/mm) electrons need 100 ns drift time to reach the mesh (for a 5 mm gap) § By measuring the arrival time of the signals a MM functions like a TPC => Track vectors for inclined tracks 2/10/2012 RD 51 Stony Brook 128 µm Conversion & drift region (typically a few mm) with moderate electric field of 100– 1000 V/cm Amplification in a narrow (128 µm) gap with high electrical field (40– 50 k. V/cm) 5 mm § Parallel-plate chamber M. Byszewski (CERN) 19

+ 20 SRU n n n Virtex 6, TTCrx chip, 4 SFP ports 40 DTC links EB, and TTC LVL 1 Accept treatment n n TTC n n Process first, buffer others SRU uses onboard TTCrx chip to receive BC clock, L 1 A, ECR, BCR and trigger type Connect to CSC TTC partition with unique TTC address Additional user-programmable offset value for BCID S-LINK n HOLA emulator on Virtex 6 board M. Byszewski (CERN) 2/10/2012 RD 51 Stony Brook

+ 21 Configuration (1): TDAQ 1) Fully integrated solution required much more work (MM and TDAQ) without clear advantage for data analysis. 2) Parasitic mode n n n ROS LVL 1 A from CSC TTC crate Sub-detector ID : RPC 0 x 65 (side A), data channel 0 x. FF (nonexistent, ignored by decoder) Separate MM partition for ROS local storage RC PC n Offline synchronization with ATLAS data ATL RC Parasitic with RCD in ATLAS partition 3) n n Send UDP packages to our ROD (e. g. , to set Run. Number) (Always returns with success) M. Byszewski (CERN) Local 2/10/2012 RD 51 Stony Brook

+ M. Byszewski (CERN) 22 2/10/2012 RD 51 Stony Brook

+ M. Byszewski (CERN) 23 2/10/2012 RD 51 Stony Brook