# Presentation: 176372

**D0 Run IIb Project**
**Motivation**
**Design guidelines**
**Project overview**
**Organization**
**End game & dates, manpower needs, total project cost**
**Reviews, PAC approval, next few months**
**Final remarks**
**Jon Kotcher**
**D0 Oklahoma Workshop**
**July 8-12, 2002**

## Run IIb Motivation

**Run IIb Motivation**

**Direct probe of Higgs sector unique to Fermilab program until ****turn-on of LHC **
**Laboratory:  determine experiment’s needs in order to optimize Higgs reach, exploit luminosity during next 5+ years **
**15 fb****-1**** per experiment probes M****H**** ~ 125 GeV/c****2 ****(5********)**
**LEP limit (F. Cerutti, LaThuille ’02)**
**M****H****>114.1 GeV/c****2 ****(95% CL) **
**Latest global fit to electroweak data (A. Tonazzo, LaThuille ’02)**
**M****H****=(85****+54/-34****) GeV/c****2**
**M****H****<196 GeV/c****2 ****(95% CL)**
**Prospects for Higgs search at ****Fermilab continue to be very ****positive **
**Opportunity unique, time scales ****finite**
**Requires fast, efficient definition ****and ramp-up of projects, application ****of resources – accelerated approach**
**Experiment, laboratory collaborating****very closely together to realize this**

## Run IIb Design Guidelines

**Original Laboratory Run IIb guideline:  5E32 @ 132 ns bunch spacing**
**Recent preliminary studies indicate that remaining at 2E32/396 ns and leveling the luminosity may be the best means of maximizing the integrated exposure delivered to the experiments**
**More studies of leveling required (PAC)**
**At 132 ns:  instantaneous luminosity drops by ~ X2 (crossing angle), also****beam-beam interactions, detector backgrounds, other instabilities**
**Leveling may offer more in integrated luminosity than the simple ****2/5 ratio would naively suggest**
**Run IIb trigger upgrades have ****been designed for 5E32 @ 132 ns**
**Number of interactions/xing virtually ****indistinguishable from 2E32/396**
**132-ns-specific functionality being ****pursued as before**
**Silicon lifetime remains a driver **

**Number of interactions per crossing for relevant accelerator settings****From Report to Director on 132 ns running in Run IIb**** **

**Conclusions of D0 Run IIb upgrade studies remain unchanged**

## Sub-Project Overviews

**Silicon**
**Replace with more radiation-hard version**
**Improve impact-parameter resolution (b-tagging), maintain good pattern recognition, broad |********| coverage**
**Level 1 Trigger**
**Shift some trigger functionality upstream to hardware level trigger, increase overall Level 1 trigger capability – contain rates, dead time  **
**Calorimeter clustering & digital filtering **
**Enhance track trigger to respond to increased occupancies**
**Use fiber singlets, increased FPGA processing power **
**Calorimeter cluster matched with track**
**Level 2 Trigger**
**Silicon Track Trigger (STT)  upgrade to address increased occupancies, map to extended silicon detector**
**Recent simulations have suggested instrumentation of 5-layers sufficient **
**Incremental ********-processor upgrade to maintain Level 2 rejection, event selectivity**
**DAQ/Online System**
**Address aging, obsolescence of computing hardware, need for higher bandwidth data logging, filtering capability**
**Project plan includes equipment & operating portions**
**Run IIb M&S contains equipment only**
**Installation **
**Integration of silicon, trigger installation & pre-beam commissioning**

**Level 1 trigger:  most extensive non-silicon portion of upgrade**

**Silicon dominates cost, drives schedule**

## Run IIb Philosophy

**Project Management, personnel have been designing Run IIb project with full awareness of tight constraints **
**Time scales abbreviated**
**Technical, financial resources not unlimited, heavily scrutinized**
**Collaboration is, and will be, multi-tasking**
**Run 2b upgrade + commissioning, operations, data analysis, physics **
**Have sought to limit scope, complexity wherever possible**
**Exploit existing designs, systems, experience**
**Effort to find alternatives to designs that require broad replacements of infrastructure**
**Carefully crafting sub-projects, assignments, & responsibilities**
**Modify course based on Run IIa results, as acquired**
**Target high-p****T**** program exclusively**

**Aforementioned silicon detector and trigger upgrades are the two major ingredients deemed necessary in order to adequately pursue the Run IIb physics program**

## Basic Silicon Design Choices

**Basic Silicon Design Choices**

**Six layer silicon tracker, divided into two radial regions**
**Inner layers: Layers 0 and 1**
**Axial readout only**
**Mounted on integrated support**
**Assembled into one unit**
**Designed for V****bias**** up to 700 V**
**Outer layers: Layers 2-5 **
**Axial and stereo readout**
**Stave support structure**
**Designed for V****bias**** up to 300 V**
**Employ single sided silicon only, ****3 sensor types**
**2-chip wide for Layer 0**
**3-chip wide for Layer 1**
**5-chip wide for Layers 2-5**
**No element supported from the beampipe**
**Drilled Be beampipe with ID of 0.96”, 500********m wall thickness**

## Silicon Tracker Performance

**Expected performance of Run 2b vs. Run 2a silicon trackers,  ****Full GEANT simulations**

- Z  bbar

- WH  l bbar

- Mistag rate 1-2%

- Single muons

**Double b-tag efficiency improves ****X 1.6 compared with Run 2a detector  **

## Run IIb Level 1 Trigger Upgrade

| System | Problems | Solutions |
| --- | --- | --- |
| Cal | 1) Slow signal rise trig on wrong X’ing |  Digital Filter |
|  | 2) Trig on =0.20.2 TTs  slow turn-on curve |  Clustering |
| Track | 1) Rates sensitive to occupancy 1000 increase 2a2b |  Narrower Track Roads
 Improve Cal-Track Match |
| Muon | No Additional Changes Needed! |  Requires Track Trig |

**Cal Jet Resolution**

**~0.4 MHz @ 5E32, 132 ns**

**Single Track Trigger Rate **

## Run IIb Level 1 Trigger Rates without/with Upgrade

**Run IIb: ********t=132ns, L=5x10****32**** cm****-2****s****-1****  **

| Trigger | Example Physics Channel | Rate (no upg.) | Rate (w/ upgrade) | Upg. components |
| --- | --- | --- | --- | --- |
| EM Trigger (1 EM tower > 10 GeV) |  | 9 kHz | 0.5 kHz | Trk, Cal, Trkmtch |
| Jet Trigger
(2 trigger towers > 4 GeV) |  | 2 kHz | 0.5 kHz | Cal |
| Track Trigger (2 trk > 10, 5 GeV, iso, EM) |  | 60 kHz | 0.7 kHz | Trk, Cal, Trkmtch |
| Muon Trigger (muon > 10 GeV) |  | 6 kHz | 2 kHz | Trk |
| TOTAL |  | 77 hKz | 3.7 kHz |  |

- Total rate into Level 2 limited to 5 kHz

**Notes:**
This slide is from Rich’s April PAC talk.  Where did the rates in the table come from?
I’ll remove this table if we don’t feel we understand it.

## D0 Organizationas of January ‘02 

**ID Groups**

**Physics Coordinator**
- B. Klima

**Software and Computing**
- A. Boehnlein, J. Qian

**Physics Groups**

**Spokesmen**
- H. Weerts
- J. Womersley

**Technical Manager **
- J. Kotcher

**Level 1**

**Silicon**

**Online**

**DAQ**

**Trigger**

**Subdetectors**

**Trigger Board**
- Chairs: D. Wood,
- L. Groer

**Offline**
**Resources Board**
- Chair: N. Hadley

**Run 2B Project**

**Speakers Bureau**
- Chair: D. Hedin

**Advisory Council**
- Chair: V. Büscher

**Institutional Board**
- Chair: G. Blazey

**Level 2**

**Level 3/Online**

**Run Coordinator**
- D. Denisov
**Commissioning**
**Electrical Operations**
**Mechanical Operations**

**D0 Organization****as of January ‘02**** **

## Revised D0 Organization 

**ID Groups**

**Physics Coordinator**
- B. Klima

**Software and Computing**
- A. Boehnlein, J. Qian

**Physics Groups**

**Spokesmen**
- H. Weerts
- J. Womersley

**Trigger**

**Silicon**

**Online**

**DAQ**

**Trigger**

**Subdetectors**

**Trigger Board**
- Chairs: D. Wood,
- L. Groer

**Offline**
**Resources Board**
- Chair: N. Hadley

**Run IIb Project**J. Kotcher

**Speakers Bureau**
- Chair: D. Hedin

**Advisory Council**
- Chair: V. Büscher

**Institutional Board**
- Chair: G. Blazey

**DAQ/Online**

**Run Coordinator**
- D. Denisov
**Commissioning**
**Electrical Operations**
**Mechanical Operations**

**Revised D0 Organization **

**Installation**

**Administration**

## Updated Run IIb Project Organizationportions under internal discussion

**D0 Run IIb Project****J. Kotcher, Project Manager****M. Johnson, Technical Coordinator****R. Partridge, Deputy PM****W. Freeman, Assistant PM****C. Yoshikawa, Budget Officer**

**WBS 1.1****Silicon****M. Demarteau****A. Bean, Deputy**

- Sensor Accounting, TestingR. Demina, F. Lehner

- ElectronicsA. Nomerotski, N.W. Reay

- QA, Testing, & Burn-inC. Gerber, TBA

- Mechanical W. Cooper, K. Krempetz

- Radiation MonitorS. de Jong

- ProductionTBA

- Simulation L. Shabalina, F. Rizatdinova

**WBS 1.2****Trigger ****H. Evans ****D. Wood**

- L1 Track TriggerM. Narain

- L1 Cal UpgradeM. Abolins, (H. Evans),P. LeDu

- L2UpgradeR. Hirosky

- Silicon Track Trigger U. Heintz

**WBS 1.3****DAQ/Online****S. Fuess****P. Slattery**

- Run 2b UpgradesF. BartlettD. ChapinJ. Fitzmaurice(S. Fuess)S. KrzywdzinskiG. SavageV. SirotenkoG. Watts

- L1 Cal/Track MatchK. Johns

- SimulationM. Hildreth, E. Perez

**WBS 1.4****Installation****R. Smith**

- Silicon Installation TBA, Mechanical TBA, Electronics

- Trigger InstallationTBA

**WBS 1.5****Administration**

**Universities/outside laboratories heavily contributing everywhere, dominate trigger upgrade**

## Run IIb Shutdown, End Gameas shown at April 02 Temple Review

| Activity | Date | Duration wrt previous task |
| --- | --- | --- |
| SHUTDOWN BEGINS | MAR 14, 2005 | - |
| Silicon ready to move to DAB | MAY 31 | 12 weeks |
| Silicon installed in Fiber Tracker | JUN 16 | 2 weeks |
| Silicon cabling, commissioning begins | AUG 03 | 7 weeks |
| Commissioning complete, ready to close | OCT 13 | 10 weeks |
| READY FOR BEAM | OCT 27, 2005 | 2 weeks |
| TOTAL SHUTDOWN DURATION |  | ~ 7.5 MONTHS |

_**Silicon End Game**_

** ****Timing, duration of shutdown driven by silicon **
** ****Replacement of trigger elements require limited access to Collision Hall (primarily Counting Rooms)**
** ****Ample time for installation of upgraded Level 1 trigger (2-3 months), but projects must be properly synched **

**Durations obtained from resource-loaded silicon schedule, based on previous Run 2a experience**

| Date ready to install                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | Date | Slack wrt Shutdown Start |
| --- | --- | --- |
| L1 Cal | DEC 17, 2004 | 3 months |
| L1 CAL/TRKM | AUG 20, 2003 | - |
| L1 TRK TRIG | NOV 03, 2004 | 4 months |
| L2 | AUG 18, 2004 | - |
| L2STT | APR 28, 2003 | - |
| Online | adiabatic | - |

_**Trigger End Dates**_

**L1 CAL/TRKM based on existing hardware; ****L2 systems driven by desire to exploit processor improvements (********) or avoid potential obsolescence (STT)**

## Total FNAL Technical Manpower for Silicon Project

**All Fermilab technical manpower, plus all physicists (FNAL + Universities)**

- As shown at April 02 Temple Review

**physicists**

**technical personnel**

## Trigger, Overall Physicist Manpoweras shown at April 02 Temple Review

**Trigger projects dominated by university labor, physicists**

**Installation, commissioning**

**physicists**

**university ETs**

**university EEs**

**All Physicists,****Trigger + Silicon**

## Total Project Cost Profileas shown at April 02 Temple Review

**Total project cost:  $28M ****(includes M&S, labor, all contingency)**
**Total contingency:  $8.1M (41%)**

**Overall contingency estimate from Run 2a**

**Labor + M&S cost profile extracted from resource-loaded schedule**

## US National Science Foundation  MRIs for Run IIb

**Silicon MRI submitted Feb ‘01, approved July ‘01**
**Brown, California State (Fresno), U Illinois (Chicago), Kansas, Kansas State, Michigan State, Northwestern, Stony Brook, Washington, (Moscow State, CINVESTAV)**
**Principal Investigator: A. Bean**
**Co-PIs: R. Demina, C. Gerber, R. Partridge, G. Watts  **
**$1.7M + $0.7M matching = $2.4M total**
**Level 1 trigger MRI submitted January ‘02**
**Level 1 calorimeter, track trigger, cal/track match**
**Arizona, Boston, Columbia, Florida State, Langston, Michigan State, Northeastern, Notre Dame, (Saclay)**
**Principal Investigator:  M. Narain**
**Co-PIs: H. Evans, U. Heintz, M. Hildreth, D. Wood**
**Full proposal not approved, encouraged by NSF to submit scaled-back version**
**Opted for track trigger upgrade: **
**$559k equipment (includes $113k matching)**
**Approval likely, participating institutions, personnel remain unchanged**
**Level 1 calorimeter, track match proposal will be submitted at end of year**
**Status of alternative funding sources (i.e., MRIs) does not alter project plan**

## Past Run IIb Milestones, Reviews

**April/Nov 00: Initial presentations of Run 2b plans to PAC**
**April 01: First full cost estimate of silicon tracker replacement presented to PAC**
**May-June 01: Silicon Upgrade Task Force reviewed CDF and D0 designs**
**Co-chairs:  M. Demarteau, B. Flaugher**
**May-June 01: FNAL/PPD Silicon Cost Review of CDF and D0 designs**
**Chair:  J. Cooper**
**June 01:  Trigger Task Force put in place**
**Co-chairs:  M. Hildreth, R. Partridge **
**Nov 01: Silicon TDR and Trigger/Online CDR presented to PAC**
**Dec 01: Technical Review of CDF and D0 Run 2b upgrades**
**Chair:  J. Pilcher**
**April 02: Updated Silicon TDR, draft Trigger/Online TDR, response to Technical Review Committee report, and Tracker Simulation & Scope report presented to PAC**
**April 02: Director’s (Temple) Review of Run 2b Detector Upgrades**
**Chair:  E. Temple **
**June 02:  Aspen PAC recommends Stage I approval**

## PAC Stage I Approval

**June PAC in Aspen recommended Stage I approval for Run IIb detector upgrades**
**PAC approval prerequisite for final DoE funding (baselining), major milestone**
**Physics well-motivated**
**Upgrades are needed**
**Silicon well-specified, construction must begin now**
**Trigger upgrades need some additional justification**
**On trigger front:**
**Level 1 calorimeter approved in its entirety**
**More rigorous demonstration of consistency between occupancies in current data and simulations on which upgrade is based**
**Higher luminosity would help!**
**More detailed justification of physics motivation for track trigger upgrade, quantitatively demonstrate that it will do the job**
**EWSB, single lepton trigger, tau triggering,...**
**Enhance justification of Level 2/3 processing upgrades**
**General agreement that D0 is in a position to address these questions in time for next review (Director’s Rev, Aug 12-15) **

## The Next Few Months

**August 12-15:  Director’s (Temple) Review**
**Warm up, dress rehearsal for Lehman Review**
**Consists of members of both Technical and previous Director’s Review Committees**
**Week of September 23**
**DoE Baselining (Lehman) Review**
**Latest date this can occur and still guarantee inclusion of Run IIb funding need ****in Congressional budget**
**Time, other constraints dictate we must pass the baselining review the first time**
**Not clear we will have a second chance**
**Besides the pyramids, Danny Lehman has never passed a project the first time around**
**He is working with us, but there are no guarantees**
**Challenge we face is quite well-defined:**
**Very different climate than previous years**
**Bar has been raised at all levels **
**Project plan must be water-tight, hold up to detailed probing**
**HEP funds tightening everywhere**
**Collaboration – not just project – must have a plan for delivering Run IIb ****upgrade on time, on budget**
**Further discussion in IB on Wednesday evening**

## Final Remarks

**Run IIb has matured into a solid, well-defined project**
**Scope has been very stable, carefully crafted to Run IIb physics goals**
**Silicon design very advanced, R&D well underway, major procurements (i.e., sensors) on the horizon**
**Trigger needs well established – remaining final technical designs rapidly converging **
**Most lead assignments made**
**Strong personnel/groups in place at all levels**
**Physics justification clear, uncontested**
**Project is entering a new phase, needs collaboration support to make it happen**
**Schedule is primary consideration – requires heightened level of commitment, associated accountability**
**If D0 is to have a future, your willingness to help with Run IIb must translate into real, palpable contributions on relatively short time scales...even in the face of all the other tasks before us**