1 / 21

Aurore Savoy-Navarro LPNHE-Universités de Paris 6&7 SilC Collaboration R&D Advances since St Malo

SiLC:Silicium tracking for the Linear Collider. Topics. Aurore Savoy-Navarro LPNHE-Universités de Paris 6&7 SilC Collaboration R&D Advances since St Malo Si-Envelope design Mechanics Electronics Future Prospects. ECFA-DESY Extended Workshop Prague15th to 18th November 2002.

tillie
Download Presentation

Aurore Savoy-Navarro LPNHE-Universités de Paris 6&7 SilC Collaboration R&D Advances since St Malo

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. SiLC:Silicium tracking for the Linear Collider Topics Aurore Savoy-Navarro LPNHE-Universités de Paris 6&7 SilC Collaboration R&D Advances since St Malo Si-Envelope design Mechanics Electronics Future Prospects ECFA-DESY Extended Workshop Prague15th to 18th November 2002

  2. SiLC COLLABORATION Status: International Collaboration started early 2002 [ChicagoWorkshop] Aim:To pursue R&D on Si detectors for tracking at future LC Who:Santa Cruz(Dorfan et al),SLAC(Jaros et al), Colorado, Tokyo,Wayne(Bellwied et al),MIT (Fisher),LPNHE, BNL; Several European & Asian (Japan, Korea and Taiwan) Institutes are also joining Most of these groups have already a large or even sometime proeminent expertise in this R&D domain. Two detectors are considered:  The all-Si-tracker (SD)  The Si-envelope (LD or TESLA) See: http://lpnhe-lc.in2p3.fr http://blueox.uoregon.edu/~lc/randd.html

  3. All-Si-tracker (SD) Si-Tracking concepts: Si-envelope

  4. Various sensor technologies Short µstrips, long µstrips, SDD (contacts with Canberra, Hamamatsu, ST Microelectronics) R&D on Electronics FEE for each sensor case Digitization, trigger logic, Timing info(SDD) Cabling & packaging Power cycling issues R&D on Mechanics Transparency, hermeticity, architecture, support modularity, rigidity, deformation studies, cabling, cooling, alignement Simulation studies Developing the necessary tools: Full simulation (GEANT4-based) Fast simulation, Pattern recognition, Tracking reconstruction algorithm(s) Studies on Physics issues and needs (precision, dE/dX…), Detector performance studies, including comparisons between different detector techniques and concepts. A lot is underway in the Collaboration, with many different tools available (legacy from previous experiments) SiLC Manifesto The SiLC Collaboration is pursuing independently of the detector concept, a generic R&D that focuses on:

  5. WE BENEFIT FROM: the already existing expertise gained by: Precursors: The LEP Microvertex detectors (6 µstrip sensors/ladder) STAR (SDD µvertex)  ALICE Larger area Si-tracking: CDF at Run II: 3.5 m2 µstrip detectors AMS with about 6 m2 µstrip ladders [up to 15x4.2cm length] ATLAS and CMS very large area Si-trackers [the next generation: ~ 200 m2] Working in collaboration with these experiments . OUR PURPOSE is to start from the present state-of-the-art to push further this R&D for outcomes not only for the LC, but also for:  upgrades of the LHC experiments  developments of trackers for astro particle experiments

  6. MAIN R&D ISSUES !!!!!!!!!!!!!THINNESS!!!!!!!!!!!Long µstrips/laddersLong shaping time FEEPower cyclingPassive cooling (ultimate?!)Fine granularity (pitch size)high precision (centroid)Thin detectors (<or = 300µm)ratio width/pitch!Reduced costSadrozinsky ‘s lawThin mechanical structureIf B-field = 5 T(compact detector),demanding magnet design

  7. R&D ADVANCES since St MALO • J.E Augustin,M. Baubillier, M. Berggren, B. Canton, C. Carimalo, C. Chapron, W. DaSilva, D. Imbault, F. Kapusta, H. Lebbolo, F.Rossel, A. Savoy- Navarro, D. Vincent[LPNHE-Paris] • Setting up the Lab Test bench: • Contacts with AMS and CMS Collaboration and Hamamatsu • 2)Pursuing R&D on mechanics: • EUCLID CATIA (Detailed design) •  Progress on the Si-FCH design •  Studies of cooling issues: • on a mechanical prototype of the drawer • with appropriate software packages •  First realizations of C-fiber prototypes, to test feasibility of drawers & honeycomb structure

  8. TEST BENCH for Si-SENSORS & FEE • SCIPP+SLAC: • Currently developing the simu of the Si-detector pulse development to begin to understand questions associated with high B-field, diffusion, pulse sharing etc… that will affect the design of the FEE chip. • Present scope: to demonstrate low-noise and power switching for the FEE amplifier of a long shaping time readout system. • Testing a 2m long ladder made with 10cm long sensors, 250µm pitch (GLAST) • LPNHE Paris: • Currently installing the test bench: • 1st ladder prototype = 5 AMS sensors(4.2 cm long, 56 µm pitch, 200 µm width, bonding allowing to test: 20, 40, 60, 80 cm… long µstrips and various RO pitch sizes) • 2nd ladder prototype = 6 CMS-TOB sensors, > or = 9.45 x 6 cm long µstrips (183 µm pitch, 500 µm width)

  9. Objectives:6 ‘’  12 ‘’ wafers 500 µm  300 µm width 183 µm  50 to 100 µm pitch Double-sided (double metalisation) Better yield (> 50%) & cheaper Preliminary FEE studies: characterizing output signals on test bench, looking for low noise preamp on the market & developing one.

  10. 2) R&D on Mechanics: Basic elements of the detector design Ladder Honeycomb structure drawer

  11. Moving from EUCLID to CATIA Ladder: 6 sensors The long drawer is made of 5 ladders; each ladder is made of 6 CMS-TOB sensors. The drawer is about 2.5 m long.

  12. R&D on Mechanics con’td: Si-FCH DESIGN 4 XUV made of 6 2-sided sensors: 4 XU & 2 VV XUVVUXXUVVUX Modularity: ladders with 4,5or 6 sensors 4 Quadrants

  13. The Si-Envelope, CATIA-CAD design

  14. CATIA design of the outside central part of the Si-Envelope: SET CATIA design of the Si-FCH honeycomb structure

  15. The Si-envelope components in a few numbers:

  16. R&D on Mechanics cont’d: C-FIBER PROTOTYPES Honeycomb structure:Several French firms contacted  No pb foreseen to realize the proposed honeycomb structure within the required dimensions C-fiber structure for drawers: Mechanical studies, design and fabrication of tools + cast of C-fiber structure drawer section done at LPNHE-PCC 1st prototype drawer structure: 2 mm thick & 20 cm long. Need to go to 1 mm thick & 2.5m long  Doable but easier by cutting structure into 2 pieces.

  17. R&D on Mechanics cont’d:COOLING STUDIES & TESTS on PROTOS Aim: Test if water cooling at end of the 2.5 m long drawer OK vs FEE power dissipation (0.2watt/ladder) Modelling of 2.5 m drawer with C-fiber board, made of 5 parts, each one =60cm ladder. FEE = resistor (0.8 or 1.4 Watt). Higher power dissipation & very localized so much worse than anticipated. Natural air convection: T°C varies at most 8°C

  18. Measuring Temperature without natural convection (~80% suppressed), T(cooling water=19degC)  results similar to natural convection, so Grad T<<10 degC Measuring temperature decrease in the resistor neighbourhood rapid decrease A simple water cooling at the edge of the drawer looks sufficient

  19. Simulation studies: developing full GEANT4-based simu. The detailed CAD mechanical design = instrumental to define the geometry DB = 1st step Tokyo is developing a full GEANT4 simu for the SD tracker  So full simulation work is really starting now.

  20. FUTURE PROSPECTS All these issues are underway. A lot has been achieved since the first ECFA-DESY Extended Studies Workshop at Cracow in September ‘01 First results on long ladder characterization & FEE developments(next ECFA-DESY Workshop) • R&D on Mechanics aiming on: Detailed CAD Design, CATIA-based of the Si-Envelope. Building realistic prototypes of: a long ladder (Lab), a long drawer(Lab) a piece of honeycomb support structure(Industry)  Cooling tests on realistic mechanical proto & comparison with software computations(ACORD, SAMCEF) Simulation studies: Main aim = developing a GEANT4-based detailed simulation (including pattern recognition) Further developments of the SiLC Collaboration

More Related