Run 2B upgrades di CDF

Franco Bedeschi – INFN-Pisa Gruppo1 – 14 Maggio 2002

Run 2B upgrades di CDF

Stato Tevatron e CDF Run IIB:

CDF upgrades per il run IIB Piano finanziario per il Run IIB upgrade

SOMMARIO

INFN - Riunione della Commissione 1

Laboratori Nazionali di Frascati

14 Maggio 2002Franco BedeschiINFN-Pisa


TeV Luminosity Peak luminosity still low but

improving X2 since January 2002 Best 2x1031

Delivered/on tape 40/25 pb-1

Delivered

On tape


Run 1 comparison Luminosity progress in Run 1

~1 yr to get x10 Steady progress after that


TeV Luminosity Medium range plan

Current performance ~60% of Church plan- Does not include effect

of October shutdown

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Jan/1 Feb/27 Apr/26 Jun/23 Aug/20 Oct/17 Dec/14

2002 Integrated Luminosity

date

From Mike Church PMG 1/8/02 presentation


Luminosity Massive effort put into understanding and improving

Luminosity- Fixed Accumulator MI optics- Much work on stabilizing tunes in injection and low beta squeeze- Fight large p-bar emittances- Work on accumulator lattice to reduce beam heating

Access early June to add transverse cooling to accumulator is expected to improve L by factor 2 – 4

Max luminosity achievable without Recycler ~8x1031 (maybe by end of 2002)

Need recycler to get to 2x1031

- Major shutdown in October ’02 to finish Recycler work- Full benefits of Recycler ~Summer 2003


Status of CDF Detector:

All systems installed and commissioned- ISL will be fixed during the next accesses this summer/fall

DAQ and trigger: Running physics trigger table with > 100 trigger paths since

February ‘02- New SVT very successful

Typical running conditions:- L1: 3.5KHz, L2: 200 Hz, L3: 20 Hz

Data processing: Reconstruction farm keeps up with data logging Physics groups skim data:

- Observe signals from low and high pt triggers: , D, B, W, Z- Some preliminary results expected for Amsterdam this July


Recent problems Broken wire in COT

Wire plane removed Need additional fixtures to replace (October shutdown) Minor impact on current data quality

Lost 6 SVX II ladders, maybe due to radiation accident Silicon has been off for about a month until May 2nd Now back to normal operation, after

- Many studies were done to understand what happened Irradiation tests at booster delivering x100 – 1000 more than

suffered during accident- Several additional interlocks and protections put into place

Probability of same conditions as accident severely reduced


First results Much data recorded to debug detector and trigger Actual data so far used for analysis with stable and

complete detector and trigger configuration ~ 6 pb-1

Specific analysis non requiring all of the detector information can use larger data sets


W and Z’s

From 3.65 pb-1

Central MuonsET >12 GeV

ET >20 GeV

298 Wevents


W Tau’s very clean with new

detector/selection algorithms


CDF: J/

Clear J/signal CMU or CMX

- ~ 60,000 ’s- = 21 MeV/c2 (16

with SVX II)- J/ x-section

~9nb as expected


CDF: J/

First checks on physics: Inclusive B lifetime from J/

consistent with expectations- cB ~ 470 mm from unbinned fit

Systematics still out of control!

- Prompt fraction ~ 85% Consistent with lower

momentum cut relative to Run I


First B signals

Bd

Bu

Bs


So much Charm!!! Getting much more charm than expected with SVT!!!

50 pb-1 2 fb-1 E791 FOCUS (4S)/100 fb-1

500K 20M 40K 120K 1M

KD0 yields:

Large yield, but poor PID, trigger bias, prompt & secondary charm……….Need to understand how to make best use of it

6 pb-1

60K


CDF for Run II 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. Operation with 396 ns and

132 ns bunch spacing


The Run IIb Specifications

We now consider the detector to have a longer, harder life. Operating conditions for Run IIb:

Maximum instantaneous luminosity of 5×1032cm-2s-1. Integrated luminosity of 15 fb-1.

Not all portions of the detector can operate effectively in these conditions

The Run IIb project consists primarily of replacements for key elements needed for high luminosity running Make changes needed in a 6 month shutdown starting approximately

in Spring 2005


The Run 2B Specifications

Luminosity profiles from Tevatron Run 2B TDR

Peak Luminosity

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FY01 FY02 FY03 FY04 FY05 FY06 FY07 FY08

x10^

30 Integrated luminosity

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FY01 FY02 FY03 FY04 FY05 FY06 FY07 FY08

fb^-

1 Total

per year


Upgrades List 4 projects well established as seeking Stage 1

approval at June PAC and being part of the baseline review of late July 2002 Silicon tracker, Central pre-radiator, Event builder switch,

EM calorimeter timing CSX scintillator/L3 CPU replacements are treated as

maintenance Italian interest in all but the Event builder and L3

Additional trigger/DAQ upgrades presented to PAC in April 2002, but need more work to become part of DOE baseline (TDC, L2, 3-D track trigger) No Italian interest so far for these projects


DOE Baselining Update

DOE baselining dates have been slipping from May to October 2002. Current estimates: DOE review for CD 1 approval (definition of scope):

Late July, 2002 DOE review for CD 2, 3 (cost baseline, spend construction

money): October 2002

Baselining in October is well matched to our September budget meeting


Run IIa silicon system Radiation damage tests and

rate measurements allow us to predict the lifetime of the SVXII.

Silicon detector end view

Layer Lifetime (fb -1)00 7.40 4.31 8.52 10.73 234 14


Silicon Installation Silicon detector replacement

Space constraints require removal of the central detector from the collision hall

This requires 14 weeks (round trip).

Time constraints force a complete replacement of SVXII. Partial replacement would also

be very risky.

ISL and SVXII positioned for installation (Jan. 2001)


SVX Replacement The replacement silicon detector is being designed to

be simple, and should be relatively quick to build. Based on single sided detectors Readout chip is common with D0, manufactured in a

standard process. One structure is used for most of the detector Compatible with existing systems

- Data acquisition- Cooling

Developments since Nov. 2001 have simplified the design we propose to build.


Silicon Detector - Run IIb

New detector is designed for quick construction

A basic module - the “stave” will be built

This structure will populate most of the detector volume

This gives the advantage of fewer parts than the current detector


Silicon Detector - Run IIb

Single sided sensors will be used for Run IIb.

Axial and small angle stereo layers will be joined in a single structure – this is used for layers 1-5.

Layer 0 (innermost) will be axial only, and a different structure. Stave layout

Mini Portcard

Axial SensorsStereo Sensors

Hybrids

Chips


Run IIB Silicon Chip development and production

- Cost: 30 k € (R&D) {funded} + 130 k € (1/3 of chip production)- Funding year: 2002- Foreign Institutions on sub-project: LBL, FNAL- Italian Institutions on sub-project: Padova- Physicists on sub-project: Alfonsi, Bacchetta, Centro, Garbossa, Guang,

Neviani Power supplies development and production

- Cost: 25 k € (R&D) + 150 k € (1/3 of production)- Funding year: 25 k € in 2002, remaining in 2004- Foreign Institutions on sub-project: FNAL- Italian Institutions on sub-project: Padova- Physicists on project: Bacchetta, Bisello, Wang + technical personnel


Run IIB Silicon Mechanical work (precision fixtures):

- Cost: 17 k € - Funding year: 2002- Foreign institutions on project: FNAL + many contribute to other fixtures- Italian institutions on sub-project: Bologna- Physicists on sub-project: Zucchelli

SVT modifications:- Cost: 100 k € (12 merger boards)- Funding year: 2003-2004- Foreign Institutions on sub-project: Chicago (fitter boards)- Italian Institutions on sub-project: Trieste, Pisa- Physicists on sub-project: Ristori, Belforte, Zanetti

Simulation and reconstruction software- Italian Institutions on sub-project: Roma1, Padova- Physicists on sub-project: Giagu, Rescigno, Jeans, Sarkar, Azzi, Sidoti


Run IIB Silicon Detail R&D requests:

25 k € PS test system:- $10,000 crate SY1527- $ 3,100 modulo A1551 di alta tensione- $ 2,900 modulo A1518 di bassa tensione- $ 1,500 consumo per cavi connettori, load box- IVA

17 k € Gluing Fixtures (R&D and production)- Al prototype (production and measurement)- Steel Prototype (production and measurement)- Production of 10 pieces


Central Preradiator

100

10

1

0.11030 103310321031

Luminosity (1032cm-2s-1)

< N >

Run IIb

Run IIa396 n

s

132 n

s

Located on the front face of the central calorimeter

The current device is a gas chamber Charge must be collected over

4 beam crossings Will contain data from ~20

interactions in Run IIb The rate will seriously

compromise its usefulness.


CPR for High PT Electrons

The pre-radiator provides an estimate of pion backgrounds to electrons Can provide some rejection

Note, the shower maximum chamber is also gas, and inaccessible Pre-radiator is our only avenue

to strengthen electron ID.

Run I hi-pt electrons

MIPS

electrons


CPR for Soft b tagging Again, the ability of the CPR

to discriminate between pions and electrons was used for tagging in Run I. 2 GeV particles from Run I CPR data was used to reduce

background


CPR for Jet resolution Some jet energy algorithms

under study indicate that resolution can be improved by including CPR information.

Jet resolution impacts directly sensitivity to Higgs or any other high mass particle decaying into jets


Pre-radiator Replacement

The pre-radiator replacement will take the place of existing CPR. Replacement uses scintillator

- Dubna scintillator currently assumed as default option

- Minos excess is possible, used for the first prototype

- Other approaches will be studied (BICRON)

Optical fiber readout, with 16 channel phototubes- Same readout used in the

plug calorimeter shower maximum detector, same phototubes


Pre-radiator Installation

Installation requires the calorimeter arches to be extracted Not possible in collision hall Assembly hall installation does

not interfere with silicon

CPR location


Run2b Pre-shower

Non-italian institutions: ANL, FNAL, Michigan State, Tsukuba

Italian institutions: Pisa, Siena, Roma1, Pavia Italian physicists on CPR project:

- Introzzi, Iori, Lami, Menzione, Paoletti, Scribano, Turini (R&D phase)


Run2b Pre-shower Cost of current default solution with JINR scintillator:

- Italy contributes total of 182 k$ = 202 k€ new scintillator 80 k € (funding yr 2003/04) fibers & conn. 45 k € (funding yr 2003/04) PS and Cables 57 k € (funding yr 2003/04) Prototyping 20 k € (funding yr 2002)

Details of R&D request:- Scintillator, shipping and mechanical work 3,500 €- Fibers & glue 1,500 €- 2 PMT with bases 4,500 €- Electronics 6,000 €- Mechanics 3,000 €- Miscellaneous 1,500 €


EM Calorimeter Timing Cosmic background removal is essential (e.g. Z Hard to do with Need for EM calorimeter timing

Calorimeter timing currently implemented only on hadron calorimeters


EM Calorimeter Timing In + MET events hard

to find a good handle to remove cosmic backgrounds Figure shows comparison

of some natural discriminating variables for “in time” and “out of time” data- No big difference between

distributions


EM timing Physics Motivation:

Important for SUSY, LED searches which rely on photons

Important for studies of W/Z production

Important for any other study involving

Our eeET had 2 EM object missing timing information!

SM Background estimate of 10-6


EM timing Currently only Hadronic Calorimeters have timing instrumented

EM shower needs to leak into Hadronic section to be timed inefficiency!

Run 2

Run II +METTrigger threshold


EM Calorimeter Timing Examples:

EWK physics: WZ production SUSY searches: N2 G~~

Run II x30 run 1 acceptance

Run 1

Need good containment of shower to have reliable efficiency calculation

- No EM timing Higher threshold


EM Timing

Solution: Add TDC timing to EM calorimeters: Central and Plug

- Minimal R&D- Project risk low:

No need for PMT base modification Inductive pick sufficient and does not change charge collected by

ADC- Installation possible during 2003 well before the Run IIB shutdown!


EM timing

Non-italian institutions: Texas A&M, Chicago

Italian institutions: LNF Italian physicists on EM timing project:

- Dell’Agnello, Cordelli, Happacher, Miscetti, Sansoni


EM timing Cost of EM Calorimeter timing

Italian contribution 130 k$ = 144 k€ :- ASD 74 k€ - Transition boards 25 k€ - ASD TDC cables 25 k€ - Prototyping 20 k€

Details of R&D: Design and build 4 ASD/TB pairs for larger scale test this

summer


Run 2B CMX counters CMX Scintillator Counters

Counter fabrication/installation and commissioning- Cost:

85 kEuro (scintillator/fabrication – 50% of all counters) + 75 kEuro (installation and refurbishing of current system)

- Funding year: 2002 (85 kEuro), 2003-2004 (75 kEuro)- Foreign Institutions: JINR-Dubna - Italian Institutions: Udine (with physicists from Roma), Pisa- Physicists on project: Pauletta, Menzione


Run IIB Summary Cost summary compared to other international funding

Total cost Dollars EuroProject M&S Cost + US M&S Japan M&S Italy M&S Italy R&D Italy M&S Italy R&D

contingency no contin. no contin. no contin. no contin. no contin. no contin.Run 2B silicon $10,870,937 $5,655,639 $1,741,264 $372,380 $49,555 € 397,000 € 55,000--> Chip eng. Run $135,880 $88,000 $0 $27,030 € 30,000--> Chip production $547,500 $425,000 $117,130 $0 € 130,000--> PS test system $22,525 $0 $22,525 € 25,000--> PS Production $672,000 $390,000 $135,150 $0 € 150,000--> SVT upgrade $382,000 $210,000 $90,100 $0 € 100,000--> Gluing Fixtures $40,000 $0 $30,000 € 17,000Pre-radiator $955,050 $425,481 $300,805 $163,982 $18,020 € 182,000 € 20,000--> Prototyping $101,254 $55,672 $27,562 $0 $18,020 € 20,000--> Scintillator (Dubna) $92,666 $0 $0 $72,080 $0 € 80,000--> Fibres & connectors $60,523 $6,590 $0 $40,545 $0 € 45,000--> PS & cables $75,800 $8,300 $0 $51,357 $0 € 57,000EM timing $248,150 $107,865 $0 $111,715 $18,020 € 123,990 € 20,000--> Prototyping ASD $18,020 $0 $0 $0 $18,020 € 20,000--> ASD Board $81,000 $0 $0 $66,899 $0 € 74,250--> Transition boards $26,460 $0 $0 $22,300 $0 € 24,750--> ASD --> TDC cables $27,019 $0 $0 $22,516 $0 € 24,990


Run IIB Summary Run 2B Italian requests

Project Italy M&S Italy R&D 2002 funds 2002 funds 2003 / 04 2003 / 04 Summaryno contin. no contin. Italy M&S Italy R&D Italy M&S Italy R&D new funds

Run 2B silicon € 380,000 € 55,000 € 147,000 € 25,000 € 250,000 € 0 € 422,000Pre-radiator € 182,000 € 20,000 € 0 € 20,000 € 182,000 € 0 € 202,000EM timing € 123,990 € 20,000 € 0 € 20,000 € 123,990 € 0 € 143,990Total € 685,990 € 95,000 € 147,000 € 65,000 € 555,990 € 0 € 767,990CSX replacement € 160,000 € 0 € 85,000 € 0 € 75,000 € 0 € 160,000Total with CSX € 845,990 € 95,000 € 232,000 € 65,000 € 630,990 € 0 € 927,990


Italian Group in Run 2B Results of poll to verify size of Italian group in Run 2B

(% of current group size by staff physicists) Bologna: 100 Frascati: 70 Roma: 55 Padova: 55 Pavia: 100 (1 person) Pisa: 75 Trieste: 75 Udine: 90


Conclusions Concerns about Tevatron luminosity continue, but

finally see signs of improvement CDF detector working well. Few problems have been

effectively dealt with The Run IIB contributions from Italy are taking shape

Costs (R&D + M&S) are well defined Italian group interest and involvement is clear

Need to start ASAP with the R&D work Need a clear encouragement from INFN on the

overall plan

Documents

Run 2B upgrades di CDF