CDF: Prospettive e upgrades

Franco Bedeschi – INFN-Pisa Gruppo1 – 13 Maggio 2003

CDF: Prospettive e upgrades

Stato Tevatron e CDF Stato di avanzamento dell’analisi Calcolo (v. presentazione S. Belforte con richiesta sblocco SJ) Run IIB:

Situazione generale Stato progetti a partecipazione italiana

Situazione MOF Sommario richieste finanziarie

SOMMARIO

INFN - Riunione della Commissione 1

Roma

13 Maggio 2003

Franco BedeschiINFN-Pisa


TeV Luminosity(old slide May 14,

2002) Peak luminosity still low

but improving Best 2x1031

Delivered/on tape 40/25 pb-1

Delivered

On tapeLuminosityIntegrated

Initial

instantaneous

2x1031


TeV Luminosity(current situation)

Peak luminosity still low but improving Best 4.2x1031

Delivered/on tape 230/170 pb-1

Delivered

On tape

4x1031

LuminosityIntegrated

Initial

instantaneous


Tev luminosity 5-7 pb-1 /wk typical

Peak 8.3 pb-1


Tev 2003 Luminosity goals

Goals for 2003 (S.Holmes: P5 report 3/26/03)

Base goals:- 200 pb-1 in FY 2003

- 10 pb-1/wk end of 2003 5.4x1031 typical

Stretch goals:- 320 pb-1 in FY 2003

- 15 pb-1/wk end of 2003 7.6x1031 typical (~max

achievable without Recycler)

Currently within these limits

~150 pb-1

As of 5/6/03


Tev goals beyond 2003

Extended goals are still consistent with plan shown at the October ’02 DOE Accelerator Review 6 month shutdown in 05 or 06 can decrease total

by 1 or 2 fb-1

Stretch goals max luminosity: 3x1032

Year Base goals luminosity/yr (fb-1)

Stretch goals

Luminosity/yr (fb-1)

FY02 0.08 0.08

FY03 0.2 0.32

FY04 0.4 0.6

FY05 1.0 1.5

FY06 1.5 2.5

FY07 1.5 3.0

FY08 1.8 3.0

FY09 1.8 3.0

Total 8.3 14.0


Tev goals beyond 2003

Fermilab long range plan (M.Witherell P5 presentation – March 26, 2003)


Status of CDF Detector:

All systems commissioned and taking good quality data- ISL: more cooling lines opened during the January

shutdown! Only 1 cooling line (4% of total) remains plugged

- Silicon (hardware/trigger) in general much more stable and reliable

- ~90 % of all silicon systems currently taking data

- L1 accept rate limitation removed

- Some unrecoverable damage is piling up

• % powered

• % good

• % bad

• % error rate

January 03

shutdown


Status of CDFEarly June 2002 March 2003

Silicon trigger coverage


Status of CDF

SVX electronics very delicate Still learning how to

protect it from further damage- Understand now

much better sources of damage

Some concern about possible continuous degradation over long periods of time


Status of CDF DAQ and trigger:

~140 triggers - (e, , , , , jets, displaced track, many multi-object paths)

- SVT very successful and improving Typical running conditions:

- Dynamic prescale output bandwidth is always saturated! More b and c phyics at lower luminosity

Date/time May 6,03 10:42

Lumin. 42.4 e30

L1 11.7 kHz

L2 251 Hz

L3 68.5 Hz

Date/time May 4,03 18:03

Lumin. 38.0 e30

L1 17.6 kHz

L2 239 Hz

L3 66 Hz

deadtime ~ 3-4 %


SVT maintenance and upgrade

4 fold increase in number of patterns Increase efficiency Improve timing

Increase availability of “spares” Use new technology (Standard Cell?) for new Chip Replace only Amboard (12 + spares)

New Amboards are backward compatible

New chips are more powerful and provide more flexibility


Physics Results

Data used for winter conferences 2003 Data set collected Feb. 02 – Jan. 03 130 pb-1 delivered, 100 pb -1 on tape, ~70 pb -1 used for

analysis ~200 pb-1 on tape by summer

Will report highlights only Preference to Italian group work

Strong impact on hadronic B/Charm physics Many activities in Hi pt physics: top, EWK, tau, searches


B Physics J/ sample

Better L1 trigger larger samples/pb-1 than Run 1 Masses, exclusive lifetimes, signals for CP violation (J/

K0S,J/ )

Lepton + displaced track samples Lower lepton pt (>4 GeV) than Run 1 thanks to SVT Hi stat. lifetimes, signals for Bd and Bs mixing

Hadronic samples with displaced tracks Charm physics, signals and BR for Bs mixing, signals and

BR for CP violation measurements New for CDF thanks to SVT – Main focus of Italian groups

- Padova, Pisa, Roma1 (Had. B convener), Trieste


B Physics

Some examples of lepton samples

0bJ/

385 22 Ds

(muon only)


Charm Physics

Flavor tag with soft from D* decay


B Physics Understand signals for Bs mixing Measure relative BR


B Physics B+:

Prospect for measurement of relative BR and ACP

J/ from tracks only


B Physics B0 h+h

Measure relative BR and direct ACP

Prospects for measurement of

301 sig. events

CDF II simulation —sum

BdKBsKK

Bd

BsK

BdK = 0.58 ±0.06 (stat)

Bd= 0.13 ±0.05 (stat)

BsKK = 0.26 ±0.06 (stat)

BsK= 0.03 ±0.04 (stat)

ACP) = 0.06 ± 0.15 (stat)

Not blessed


High Pt physics (1) Re-discover top!

Measure x-section in various channels Low precision mass measurement Italian contributions to study of backgrounds, b-

tagging, jet energy corrections, fully hadronic final state (Bologna, Padova (top convener), Pisa, Roma1)

W and Z’s: Measure x-sections in various channels

- Including channels with tau’s! Forward-backward asymmetries Italian contribution on extension of electron ID to plug

calorimeter region and on tau ID (Pisa)


Top physics

W events with b tagged jetsfrom 57.5 pb-1 of data Data = 15 events

Background =3.8 + 0.5

Use excess events in > 3 jets binsto measure the top cross section

(t t) =5.3 + 1.9stat + 0.8sys + 0.8lum


EWK Physics Tau’s are much improved in Run 2

Use W -> to test universality and optimize selection

Charged particle multiplicity from W -> candidates

Compare (W)*BR(W->)to (W)*BR(W->e)

g / ge = 0.99 + 0.04

Zt t in progress


High Pt Physics (2)

Extensive study of jet properties and x-sections in process Italian contributions on understanding of energy scales and

jet resolution (Frascati, Pisa)

Searches for Physics Beyond the SM in progress First results often improve run 1 results due to high CM

energy Italian contributions on Higgs search to multi-jets, LFV

Higgs decays involving taus (Bologna, Pisa, Padova)


Searches with jets

Mjj

Mjj

More events at high masses than run 1

X10

These limits already improve run 1 results


CDF for Run IIB

The current detector was designed/built based on Run IIa specifications: Maximum instantaneous

luminosity of 2×1032cm-2s-1. Integrated luminosity of 2 fb-1

~ few years of operation


The Run IIb Operating conditions for Run IIb:

Maximum instantaneous luminosity of 3 – 4 × 1032cm-2s-1.

- No change in bunch spacing more interactions/crossing

Total luminosity of up to 15 fb-1 integrated over many years of running

The Tevatron experiments have been preparing an upgrade to deal with these problems since 2001 After many reviews (all favorable!) in 2001 and 2002 received from DOE

CD-3a approval for equipment spending in FY 03

- Sensor and SVX4 orders have gone out in March 03

Expect new decision from DOE on FY 04 on the time scale of late July 03 after DOE Accelerator Review

In May 02 agreed with INFN on envelope for Italian contributions Some funds and SJ on 2003 INFN budget


Run IIB reviews

From M. Witherell P5 presentation


Summary run IIB projects

Calorimetry upgrades New central preradiator (CPR) (*) Add timing to EM calorimeters (*)

Tracking upgrades Full replacement of all silicon systems inside ISL (*)

Trigger upgrades Improve resolution of L1 track trigger Rebuild global L2 Increase event builder throughput

(*) Activities with contributions from Italian group


Run IIB: Italian contributions

CPR: CPR is an important device to identify

electrons and understand their backgrounds

CPR is used to improve jet energy resolution

Old CPR is a slow wire chamber that cannot sustain the higher luminosity and rate of run II

New CPR:

- Scintillator based faster

- Finer segmentation in space

- Should have planned it already for Run IIA !

- Installation requires substantial shut-down

Run I hi-pt electrons

MIPS

electrons


Run IIB: Italian Contributions

Italy R&D summary: Detailed study of tile performance

in various configurations

- Bicron, Dubna scintillator

- Kurarai, PolHiTech fibers/mirroring

- Grove shape (uniformity)

- Choose Dubna/PolHiTech

Definition of production model with US and Dubna colleagues:

- Scintillator cut and grooved in Dubna

- Assembly partly in Italy and partly US

Test tile

0

20

40

60

80

100

120

0 50 100 150 200 250 300 350 400ADC channels

N

bicron

dubnaPolHiTec Ws fiber 3loops

8.6 ADC single photon



CPR organization and responsibilities: Steve Kuhlman (ANL) calorimeter project

leader

- Joey Huston: CPR project leader

Nicola Turini responsible for Italian contribution

Collaboration:

- ANL, Fermilab, Michigan, Rockefeller: Design, assembly and test

- Italy: Design, assembly and test/PS

- Russia: Scintillator/grooved tiles

- Japan (Tsukuba): Multianode Phototubes

Italian groups involved:

- Pisa [Siena], Pavia, Roma1, Trieste, (Udine)



Financial summary: Total according to May02 plan: 202 k€

- Prototyping 20k€ (funded in 2002/03)

- Scintillator 80k€ (funding in 2003/04)

- Fibers & Connectors 45k€ (funding in 2003/04)

- PS & Cables 57k € (funding in 2003/04)

Total SJ for 2003: 100 k€- SJ adequate to cover 2003 needs

- No urgency for release now

- Will request release in September after final DOE approval



EM calorimeter timing: Key to improve cosmic

background rejection in +MET events- Increase efficiency at low

momentum (no need to leak into Hadron Calorimeter)

X 30 yield of Z X 2-5 GSMB SUSY processes

with N2 G final states

Run II

x30 run 1 acceptance

Run 1~ ~



R&D summary: 3 each transition boards and

discriminators prototypes made After some iteration found cable

with satisfactory properties Now ready for production and

installation- Cable installation is time

consuming and needs long shut-down (summer 2003!)

- Board installation can be done during short accesses



EM timing organization and responsibilities: Steve Kuhlman (ANL): calorimeter project leader

- Dave Tobak: EM timing project leader

Marco Cordelli responsible for Italian contribution Collaboration:

- US (Texas, Chicago, Michigan, ANL, FNAL): TDC, splitters, infrastructure

- Italy: transition boards and discriminators, cables

Italian groups involved:- LNF




- ASD 74 k€ (May02) 65 k€ (quote)

- Transition boards 25 k€ (May02) 35 k€ (quote)

- ASD TDC cables 25 k€ (May02) 25 k€ (quote)

- Prototyping 10 k€ (funded in 2002)

Total assignments for 2003: 60 k€ + 60 k€ SJ- Request release of SJ now to allow for full installation this summer

during extended shut-down

- All components provided by US groups already available

- Delaying funding to September can imply many months of delay in the installation



Silicon Tracker: Need replacement for radiation

(and other) damage

- Limit 4.3 fb-1 for L0

- 5.7 fb-1 for port cards

- Other inner layers fail around 7 fb-1

- 4% -chips and 8 % of z-chips already lost due to various accidents



R&D summary 12 working modules and 3

electrical staves made- No problems found

- Mechanical fixtures OK Chip pre-production in

progress. Back any moment Sensors being produced:

- Delivery starts June 03 and ends March 04

Test on CAEN PS prototypes satisfactory- Working on simplifying system

CDF stave electrical prototype

Fixtures made in Bologna



Silicon organization and responsibilities: N. Bacchetta, B. Flaugher: Project Leaders Nicola Bacchetta: responsible for Italian contribution Collaboration:

- US: Infrastructure, SVX4, hybrids, assembly, DAQ

- Japan: sensors

- Italy: management, chip, power supplies, assembly fixtures, SVT mods

Italian groups:- Padova, Bologna, Roma1, (Pisa, Trieste for new mergers)




- Prototyping 55k€ (35k€ funded in 2002)

- Chip 130k€ (funding in 2003)

- Mechanical 38k€ (11 funded in 2003)

- PS 150k€ (funding in 2004/5)

Total assignment for 2003: 11 k€ + 21 k€ SJ mechanical + 130 k€ SJ for chip - SJ adequate to cover 2003 needs

- No urgency for release now

- Will request release in September after final DOE approval


Status of MOF

Last IFC meeting inconclusive, but: Scrutiny group should produce appropriate documentation

by mid-June Overall Operations budget to share defined to be ~3 M$

- Implies for Italy ~ 350 – 400 k$/yr, but: Partial credit for computing contributions with penalty factors still

under discussion

New rules will apply to 2004 if agreement is found at next IFC meeting in September


Financial summary

Richieste di sblocco immediato: 60 k€ per completamento EM timing per run 2B ~122 k€ per upgrade FARM al CNAF (vedi prossima

presentazione di Stefano Belforte)

Previsioni per Settembre: Trasferte:

- Sblocco attuale SJ + 10 MU finanziamento aggiuntivo per crescita gruppo in corso d’anno (+4 persone)

Run 2B:- Sblocco 130 k€ (chip) + 100 k€ (CPR)

CDF: Prospettive e upgrades

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