# Presentation: 187422

## Management,Technical & Schedule Overview

- H.Weerts

- Introduction/overview
- 	since last review
- 	management & organization
- 	responses to Nov 99 review
- 	short schedule
- Technical status of detector
- 	in numbers & graphical form
- Summary

## Slide 2

## Introduction/overview

- A lot of changes since the last review

- Upgrade organization and management
- Show slide
- Dec 2000: Installation & Commiss. Review

- Start  developing installation & commiss. Schedule, many branch points

- Fallback option document in January 2000
- Reevaluation of cost estimate Feb 2000

- Contingency & fallback/descoping schedule plan, March 2000   ( Womersley)
- Have a well understood installation schedule from now  to March 2001   (Kotcher)
- Updating schedule bi-weekly

- Go from rigid  flexibility
- Split SMT support cylinder

- with contingency

- Reviewed March; change requested submitted and approved  ( Tuts)

*Converged on final version*

## Introduction/overview

- Brief summary of responses to Nov 1999 review

- Recommendations

-                              Nov 99                current
-                              review                   schedule
- Completion date:   *Feb-2-2001*      ***Feb-16-2001***

- DØ Response

- Silicon: add manpower, develop contingency in installation
- Fiber tracker: looser tolerances, add people
- Develop Fallback plan by May 1, 2000 to ensure ready for beam 3/1/01

- More physicists; 2 positions at FNAL;  split support cylinder  several months contingency for silicon
- Added people, fiber tracker completed
- Done, present today

- (Ready for beam)

## Milestones....summary

- Reportable milestones

- Other milestones

- Milestones in current schedule vs. baseline schedule

- Pressure is building in time.
- Use flexibility and contingency in installation
- Time contingency decreasing
- It costs in $$$$

- Still ready for March 2001

- Excluded at 100% confidence

## Overview of D0 detector for Run II

## Status

- Overview of detector

| Detail | Subsystem | Status |
| --- | --- | --- |
| yes | Silicon | production |
| yes | Fiber tracker | mech. complete |
|  | Solenoid | working |
|  | Central Preshower | installed |
|  | Forward Preshower | installed |
|  | Intercryostat detector | installed |
|  | Luminosity monitor | installed |
|  | Calorimeter electronics | production |
|  | Muon Central | commissioning |
|   | Muon Forward | production |
|   | Trigger & DAQ | production & use |
|   | Online | in use |
| yes | Installation | in progress |
|  yes | Commissioning | in progress |
|  | Computing | commissioning |

## Tracking System Overview

***All detectors in this volume use ******SVX II****** readout***

- ~0.5 m

- ~1.3 m

## Silicon Microstrip Tracker (SMT) overview

_**H Disks: 4**_
- 		p-side: ±7.5o (SS)

_**F Disks: 12**_
- 		p-side: 15o		n-side: -15o

_**Barrels: 6**_	Barrel 1 and 6:		layer 1,2,5,6: 		p-side: 0o  (SS)
- 	Barrels 2, ... 5 		layer 1,2,5,6:		p-side: 0o			n-side: 90o		layer 3,4,7,8			p-side: 0o			n-side: 2o

## Silicon Status

- In production on ALL aspects

- Issues:

*Delivery of sensors from Micron*

- SMT-south: Aug. 10, 2000
- SMT-north: Oct 27, 2000

-  Concerns:

- Keep production going (capacity > need)

- No problem
- Not without uncertainties

- Complete by

- More from Demarteau

## Fiber Tracker Overview

**Scint Fibers**
- m , multiclad
- 1.6-2.5m active length
- 10m clear waveguide to photodetector
- rad hard  (100 krad)                (10yr @ 20cm @1032)
**Fiber Ribbons**
- 8 axial doublets
- 8 stereo doublets        (3o pitch)
**Readout**
- 77,000 channels
- VLPC readout
- run at low temp (9 oK)
- fast pickoff for trigger
- SVXII readout

## Fiber tracker status

- Waveguide installation “unknown” (not started yet)

- Issues:

*Waveguide production going, but not complete*
*VLPC cassette production going well, later then we like*

- Mechanical Assembly completed May-26-2000

- Details from Bross

## Forward Preshower Status

- Project on-schedule, no items on critical path.

- Forward Preshower Status

- Waveguides still have to be produced, installation in late Fall

## Silicon + Fiber tracker Electronics

- Tracking readout path well along

- SMT only

- SMT Interface card lagging, but not real problem .....

## Fiber Tracker Electronics

- Includes parts of the  Level 1 tracking trigger

- trigger

- Determines performance of tracker at trigger level.

- Measured noise levels now low enough   into production

- Some parts later than we like, but have to keep performance in mind; not critical for March 1  **(yet)**

## Solenoid & Field Mapper in Bore of Central Calorimeter

- Precision mapping of field Summer 1999
- Calibration of permanent NMR probes May 2000

- Central Preshower installed on solenoid

## Calorimeter Electronics Status 

- Replace 60k channels of preamp, SCA, shaper, calibration, and power supplies

- Preamps done:  June 14, 2000
- BLS completed & tested: Dec 26, 2001
- Last calorimeter ready (ECN): Feb 5, 2001

- Later than we like it

- Not critical path item for roll in

## Inter Cryostat Detector (ICD)

- North & South ICD installed
- Waveguides ( Fiber ribbons); in production

- Mechanically built at UT Arlington; electronics at Louisiana Tech

## Muon Detector Upgrade

- Bottom B/C Scint

- Central Trigger Scint (A- )

- PDTs

- Forward
- Trigger Scint
- (Pixels)

- Forward
- Tracker (MDTs)

- Shielding

## Muon detector status

*Central muon: *complete *& driving commissioning*

- Forward muon:

- 4608

- 630

- 6500

- All counters FNAL
- Assembly into octants:
- pixel octants production done
- MDT octant going well
- Mounting on detector: BIG objects

- #counters in system

- Central

- Forward

- concern

| Schedule | Nov 99 | Current |
| --- | --- | --- |
| Pixels octants assembled | Apr 4, 00 | Feb 23, 00 |
| MDT octants assembled | July 14, 00 | Sept 1, 00 |
| Pixel octants installed | Aug 25, 00 | Jan 1, 01 |
| MDT octants installed | Aug 4, 00 | Nov 30, 00 |

## Muon forward system status

- MDTs built @  JINR, Dubna;
-  A, C @FNAL
- Assembly started

- Scintillators built @ IHEP/Protvino;  all delivered; assembly into octants done

- Detectors ( pixels,  MDTs & central A-) constructed by Russian collaborators

- Assembly into large detector planes at FNAL Lab F

- Installation is highest priority; sequence is A,C, B determined by priorities and fallback options

- DONE

## Muon electronics

- On schedule.
- Some of earlier delays resulted in less time for commissioning

## Trigger Overview

- 128 terms

- 128 terms

- 50 Hz

- L2
- 100s

- L1
- 4.2 s

- Framework

**      ****For  L=2x10****32****cm****-2**** s****-1  ****( Bunch Crossings at     ****	****132 ns;   Deadtime:  < 5% ) :**
**7 MHz input rate                               Data**

- Data Log

- 7 kHz

- 1000 Hz

-    L3
- 48+ms

- 48 nodes

## Detector/L1/L2 Components

## Trigger Status

- Not a critical path item for detector roll-in

- Pieces of nearly  every  component installed & used

- Many institutions; complicated system, dependent on young physicists with non-permanent positions.

## Online status

- Already used in _commissioning_ of detector.
- Critical pieces are in use:
- Controls
- DAQ & Event Monitoring

## Installation

- Installation sequence for many years driven by Run I experience:  move large pieces in very **tight **space.

- Since Dec ’99 review & for fallback options:
- effort on developing contingency/slack

**Result:**

- Change installation sequence  two months of contingency for SMT delivery ( but squeeze ECS)
- SMT deliver  as north & south half, add one more month of contingency (no squeeze on ECS)
- Fallback plans in place

- Installation is driving **all** upgrade efforts.  A lot of effort in hall; parts/detectors arriving;  commissioning effort.

- Installation sequence now radically different and optimized for remaining time

- More from Kotcher

## Summary

- Progress in D0 Upgrade over last year very good, we are converging

- Created 2-3 months of contingency/slack, but are also using it to keep the March 2001 completion date

- Detector “production lines” are working or winding down (has been really R&D all the way)

- Monitoring/updating schedule since September ’99:  alleviate bottlenecks as they occur.

- D0 will be ready in mid February 2001 for the start of Run II.

- Fallback/Schedule Contingency exercise was very useful

- Projection:

- Definitely have moved into installation phase.

- Feb 16, 2001

- No time to explicitly mention all the successes & progress, detectors/parts completed, electronics in hand & tested.

- None of these

## Forward funding capability for > $1.8M

- Financial status of Run II detector project:

- Identified a projected shortfall in February
- Presented to Fermilab
- Intensive cost review ( 20 reviewers) in March
- Review agreed with our assessment, increase contingency
- Fermilab agrees with DØ
- Change request has been sent to DoE

**Last year $$$$**

- At November 1999 D0E-Lehman review indicated that contingency was “uncomfortably low”.