1 / 13

PMG Agenda September 7, 2000

PMG Agenda September 7, 2000. Overview (Weerts) Detector status Reportable milestones Summary Silicon (Demarteau) Muon ( Denisov). Status Overview: SMT. Silicon (more details Marcel) Production of components: completion close Micron sensors are all in hand, except 90 0

brent-ford
Download Presentation

PMG Agenda September 7, 2000

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. PMG AgendaSeptember 7, 2000 • Overview (Weerts) • Detector status • Reportable milestones • Summary • Silicon (Demarteau) • Muon ( Denisov)

  2. Status Overview: SMT • Silicon (more details Marcel) • Production of components: completion close • Micron sensors are all in hand, except 900 • HDI’s nearly all stuffed (need ~25 Promex, 20 Silitronix) • Ladder production complete by end of Septemebr • Low mass cable for barrels/F disks done: 829 at vendor • Ablation, surface mount, add coax going well • Out of 563 tested 548 pass • Need 220 for H disks • 10% readout test • Have successfully read out 18 HDI’s on F disk • Real Barrel now hooked up, ready to go • Trigger dates for fall back positions • Miss the September 1: SMTS complete (more on next slides)

  3. Status Overview : SMT Silicon Action triggers Missed the September 1 “SMTS complete”trigger - not for ladder production reasons - mechanical infrastructure, etc Projection for arrival of completed of SMTS at DAB: Nov 1, 2000 (details next slide)

  4. Status Overview: SMT-S Approach: declare Nov 1 as a major deadline How do we accomplish that ? • Have detailed task list • Monitor progress on daily basis • Make decisions on daily basis to stay on schedule • Rearrange priorities in silicon, so SMTS completion is highest priority • Go to multiple shifts • Already added technical manpower If necessary…….. • Reduce testing time at SiDet • Others issues as we go along Can we do it earlier than November 1, 2000 ? From task list ( day by day) it is tight Descoping not useful at this point and given nature of problem

  5. Overview: Fiber tracker status • Waveguide Production and QC continue • Production essential complete except for remakes • About 30-40 are expected to fail QC

  6. Overview: Fiber tracker status • VLPC Cassettes • Continues • Some problems with “leakers” • 2 characterized cassettes required chip replacement

  7. Overview: Fiber tracker status • So far two runs done • 2 Million triggers under normal conditions • 35% RH and 72 F • 1.7 Million triggers dry • 1% RH and 72 F • Data analysis underway • Preliminary tracking working • We are continuing to flow N2 • 3 weeks required (at least) to reach stable point • Will take another run if cassette testing allows

  8. Status Overview • Central Muons • Commissioning continues • Forward Muon detectors • Production in Lab F done. • Denisov will give details. • Trigger & DAQ • Progressing, no major schedule concerns • Starting to push on rate capabilities • L3 hardware (VRC) replaces present software emulation by Oct • Online • In use at low rate, not on critical path • Decision on logging machine made (Compaq)

  9. Status Overview; Electronics • Electronics • Calorimeter • 5000 preamps installed on detector (of 55k) • 250 production BLS boards on Sept 15 • 1000 BLS daughter cards in assembly • Muon • PDT electronics - done • Scintillator • Front end • SFE: have 139 out of 145 • SLP: have 5 out of 25 ( stuffed here) • Readout card - done • MDT - done • Readout electronics • Readout 100% • Fanout, MFC: have 8 out of 28 Enough of all for muon commissioning

  10. Status Overview; Electronics • Tracking Electronics • Si Interface Card • 2 production boards stuffed and being tested • Skip preproduction and start final production ( 160 at 3/day), some risk • Cabling/infrastructure work underway • Analog Front End boards • Delays due to illness of engineer • Production versions in hand; firmware ( have 6 stuffed) • Approve by Sept 20; complete January 17 • MCM going • Good yield first 50 • Need 1900, ordered 2200; have 2350 SVX chips • Adapter card • Sept 1: 34 pre-production cards • Power supplies • VICOR has long delivery times and increasing

  11. Installation • A layer muon pixels north • Being installed today • Assembly took 6 days instead of 8 weeks for south ( use it for scaling SMTS to SMTN ??) • VLPC cassette are being read out; new effort to prepare for waveguide testing • Waveguide installation: a problem developed. • Next slide for details • Big effort by Mike McKenna ( redo years of work in one week) • Focus & attention on silicon infrastructure; a lot of effort • Cooling and air • Cabling • Complete by October 15; functional Nov 1

  12. Waveguide Routing Not quite • We have run into a problem with WG routing • Original scheme presents too large a build-up in a few regions. • EC cannot close • Currently measuring CC/EC clearance at large r • Making 1/4 scale model

  13. Summary • Concerns • Silicon concerns continue….. But area of concern has shifted to “installation” of barrels and disks. • We have used up contingency for SMTS • It is not Micron anymore….. • Electronics delays are an increasing concern for realistic commissioning Successes: many but always over shadowed by problems. We are making progress, especially in the assembly hall, where infrastructure is getting into place.

More Related