1 / 30

ATLAS ID - SCT Status Report

ATLAS ID - SCT Status Report. Highlights from SCT week Valencia 13-18 June Procurement of sensors & FE ASICs Power & Readout Optical Harness Power supplies Readout & DAQ Endcap modules & assembly Endcap Engineering Endcap Modules Barrel modules & assembly Barrel Engineering

gitano
Download Presentation

ATLAS ID - SCT Status Report

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ATLAS ID - SCT Status Report Highlights from SCT week Valencia 13-18 June • Procurement of sensors & FE ASICs • Power & Readout • Optical Harness • Power supplies • Readout & DAQ • Endcap modules & assembly • Endcap Engineering • Endcap Modules • Barrel modules & assembly • Barrel Engineering •  Barrel Modules • Software • Schedule & critical issues prepared by M. Tyndel, ATLAS Plenary Jun 2002

  2. SCT Procurement – silicon sensors • Production & acceptance testing of the silicon detectors is ahead of schedule • Delivery will be completed this year (including an allowance for losses during assembly. prepared by M. Tyndel, ATLAS Plenary Jun 2002

  3. SCT Procurement – FE ASICs • Production & acceptance testing of FE ASICs is well advanced • Yield is lower than hoped for but acceptable ~26% • Agreement has been reached with ATMEL regarding radiation QC. • Need to purchase spares this year prepared by M. Tyndel, ATLAS Plenary Jun 2002

  4. SCT Power & Readout – Optical Harnesses • 8 pre-series barrel optical harnesses are in production • Barrel harness = • Patch-panel (designed) • Low mass tape (in production) • Kapton changed to 50mm • Problems with soldering now understood • Yield ~85% • Optical fibre (purchased) • Doglegs (in production) • Optopackages (in production) • 64 produced (see fig) • Endcap harnesses use the same components & production will start later this year • Critical issues are to check mechanical clearances & electrical performance on barrel sector prepared by M. Tyndel, ATLAS Plenary Jun 2002

  5. SCT Power & Readout – Optical Harnesses • Dog-leg with opto-package • Critical issues are to check mechanical clearances & electrical performance on barrel sector prepared by M. Tyndel, ATLAS Plenary Jun 2002

  6. CANbus LV&HV crate DCS USA15 44 crates 11 racks LCS LV&HV crate LV&HV crate CANbus LCS LV&HV crate US15 44 crates 11 racks LV&HV crate LV&HV crate SCT FE Power, Detector Bias & services prepared by M. Tyndel, ATLAS Plenary Jun 2002

  7. SCT FE power, Detector Bias & services • Full system specification exists – with details of all services and patch-panels • Prototype SCTLV0 card (4Ch) under evaluation (see fig). Performance meets requirements • Full crate (48 Ch) of low voltage and detector bias is planned before the end of 2002 prepared by M. Tyndel, ATLAS Plenary Jun 2002

  8. Test of the LV0/4 channels with AFE2000 power pack Test with actual SCT power lines Cable resistance: 3.4-3.68 Ohm Ferrite chokes Connectors 9m Type 2 LV0/4ch PP3 PP2 PP1B 60-120m Type 4 LM 50µ 30m Type 3 SCT module SCT week, Valencia, 17.06.02. Plenary Session, J.Bohm, Prague AS Results LV0 with AFE2000 and LV3-VME gave the same results (1-2%) AFE2000 and linear power supply 48V are well comparable (1%) Noise is decreasing with increasing load of AFE2000 Start-up procedure worked well First test with actual SCT power line was successful; Cable resistance agreed with calculated one. prepared by M. Tyndel, ATLAS Plenary Jun 2002

  9. prepared by M. Tyndel, ATLAS Plenary Jun 2002

  10. HV board & back-plane Partly equipped; Press-fit technology tested Partly equipped & under test prepared by M. Tyndel, ATLAS Plenary Jun 2002

  11. SCT Readout & DAQ • SCT Readout = • RODs • 4 prototypes being evaluated • Expect pre-series of 9 x 48 Ch by end of 2002 for use during assembly • + BOCs • Back of crate cards which convert opto  electronic • Prototypes being evaluated • Custom opto-packages produced in Taiwan • + TIMs • Prototypes exist have been produced and are being evaluated. Hope for info from Dick Jared • + Crates & SBC • Production of readout (& power) is critical as it will be used during assembly prepared by M. Tyndel, ATLAS Plenary Jun 2002

  12. SCT Endcap Engineering – Support structure • Design of the carbon-fibre support cylinders & support wings is complete and tender is about to be launched • Tender for the carbon-fibre disks is complete and the order about to be placed. • The module cooling and mounting scheme (consisting of Carbon-carbon blocks with a “wiggly” 70micron Copper Nickel cooling pipe has been prototyped & tested on the evaporative cooling rig. • Design of the “on-disk” services and patch-panels is final and being prototyped. • A critical measurement is to validate the new K5 module with the final support & cooling structure prepared by M. Tyndel, ATLAS Plenary Jun 2002

  13. SCT Endcap modules • Problems with the stability of the EC module have been fixed. • Hybrid has been re-designed and manufactured (K5) • 16 modules (inner, middle, outer) have been built • 16 have had performance measurements in the lab & are stable • 7 have been measured in testbeam • 6 have been measured in system test • 2 have been irradiated • Modules were built built (rapidly) in 5 sites  • K5 modules can be built reliably inside specs & on required time-scale • Electrical performance is within specification pre-irradiation • See the same performance in the lab and system without noise injection • More work needed to optimise immunity to noise injection prepared by M. Tyndel, ATLAS Plenary Jun 2002

  14. 4 SCT EC outer modules on system test sector prepared by M. Tyndel, ATLAS Plenary Jun 2002

  15. Details of SCT modules on system test sector prepared by M. Tyndel, ATLAS Plenary Jun 2002

  16. Noise measurement results of EC System Test • 2 middle and 4 outer modules measured on the system test disk • Ned‘s grounding scheme • no significant difference between individual and collective operation • common mode noise below 150 electrons on any chip (to be added in quadrature) prepared by M. Tyndel, ATLAS Plenary Jun 2002

  17. Electrical Performance after Irradiation • 2 outer modules irradiated in May, 6 days RT annealing, then testbeam • First results do not meet specification: • Post irradiation gain is low ~30mV/fC • Repeat measurements and compare with barrel; check effects of annealing • Median charge collected is low ~ 2.7fC • Check that detector is fully depleted; check effects of annealing • Noise is high ENC~2300e • Repeat in same test setup as barrel;check effects of annealing • Results are preliminary & will be checked before FDR; 2 more modules will be irradiated prepared by M. Tyndel, ATLAS Plenary Jun 2002

  18. Thermal Performance of SCT EC modules • 3 modules thermally cycled: no significant change in mechanical or electrical properties grease contact • Reproducibility checked on 4 modules • First thermal measurements on 1 middle and 1 inner module (non-irradiated.) agree with simulation at 10% level • From simulations a cooling block temp. <-13°C is required • First measurement of CC blocks on CuNi pipe and evaporative cooling show that this requires coolant at –24°C • Again measurement needs checking prepared by M. Tyndel, ATLAS Plenary Jun 2002

  19. Next steps SCT EC module • Complete measurements on irradiation, cooling and grounding issues • Document design & measurements for an FDR in Jul/early Aug • Anticipate PRR in Oct/Nov when: • Open issues are understood • Results from hybrid tender are available • [In the meantime have ordered 100 hybrids to test industrial hybrid assembly and provide parts for module assembly commissioning and site qualification] prepared by M. Tyndel, ATLAS Plenary Jun 2002

  20. SCT Barrel Engineering • Procurement of the support structure is proceeding well • B3 delivery to CERN 28.6.02 • B6 delivery to CERN 07.8.02 • B5 delivery to CERN 10.9.02 • B4 delivery to CERN 15.10.02 • All support, cooling and assembly is being validated on 48CH sector • 48 channel cooling unit with blocks & manifolds • Brackets • Harnesses – check clearances • Problems encountered with metallurgy of thin wall CuNi pipes. Needs to be understood before assembly can start • Decision taken to increase the module tilt angle from 10 deg to 11 deg on B3 with an increase of R from 299 to 299.5mm • B3 module assembly will start in Oxford early 2003  prepared by M. Tyndel, ATLAS Plenary Jun 2002

  21. SCT Barrel Engineering Project engineer fixing brackets Dogleg + LM tape sample QA! Dummy module prepared by M. Tyndel, ATLAS Plenary Jun 2002

  22. SCT Barrel Engineering Tests with evaporative cooling. Details of the capillary and connections. prepared by M. Tyndel, ATLAS Plenary Jun 2002

  23. SCT Barrel modules – now in production! Hybrids Baseboards prepared by M. Tyndel, ATLAS Plenary Jun 2002

  24. SCT Barrel modules • Module assembly sites • Japan • Qualified (5 modules in spec) • 40 production modules • UK-B • Qualified (5 modules in spec) • Production starting • USA • Qualification in progress • SCAND • Qualification in progress • Goal is to complete module assembly by end 2003 prepared by M. Tyndel, ATLAS Plenary Jun 2002

  25. Qualification module 42 Response (Gain; Offset & Noise extracted from threshold scan) prepared by M. Tyndel, ATLAS Plenary Jun 2002

  26. SCT software • Main areas of activity. • Producing simulated byte stream. (J. Schieck) • QA for Data Challenges (J. Schieck) • Filling detector description information for Event Data Model for reconstruction. (A. Fornaini + G. Gorfine) • Getting accurate detector description. Producing detector description for new software. Maintenance of G3 simulation. (G. Gorfine + J. Pater) • Simulation/checking of detector response i.e. digitization. (S. Gadomski) • Passive material in inner detector for reconstruction (C. Hansen) • (Also alignment and test beam work.) • “In good shape for meeting requirements for DC 1/Phase 2”. • … but need more people to get involved with both SCT specific software as well as common inner detector items. prepared by M. Tyndel, ATLAS Plenary Jun 2002

  27. SCT Software - Detector Description in AGDD • Full SCT detector written in Compact XML. • Compact XML basically contains primary numbers and there is C++ code to interpret these numbers. • Now close to G3 geometry. Currently verifying local to global transformations. • Validation of G4 Geometry built from AGDD. • Material comparison between G3 and G4 • Material comparison with engineering prepared by M. Tyndel, ATLAS Plenary Jun 2002

  28. SCT Software - Detector Response • Common Pixel+SCT framework. • Good agreement with test beam data. prepared by M. Tyndel, ATLAS Plenary Jun 2002

  29. Quality Assurance for Data Challenges • Aim: • Validate DC sample productions by insuring reproducibility at different sites. • Provide tool to test similarity of samples produced under different conditions (such as different sites). • Procedure: • Track quality cuts • Compare efficiency • Get pull of track parameters (Ao,zo,o,cot(),1/pT) • Compare with ‘default’ sample. prepared by M. Tyndel, ATLAS Plenary Jun 2002

  30. SCT schedule & Critical issues • Considerable progress in many areas over the last year • Production of the barrel is underway. • Procurement of most EC components underway • Critical items: • The metallurgy of thin wall CuNi pipes used for evaporative cooling. • Start-up of EC module production • New schedule and project plan in preparation to match revised LHC and TC integration schedule • The endcaps will be produced sequentially prepared by M. Tyndel, ATLAS Plenary Jun 2002

More Related