1. The SuperB Project overview
Marcello A. Giorgi Università di Pisa e INFN Pisa
IRC 2nd. Review Meeting – Roma April 29,2008
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

2. First IRC meeting In this meeting : Update on physics and detector
In the agenda of the first meeting;
Project outlook.
Physics program.
Detector design.
Accelerator Concepts, Parameters, New Ideas.
Budget estimate
The focus was mostly on Physics and Detector since the accelerator innovative concept was based on simulations, that we intended to validate with a machine experiment at LNF.
In this meeting :
Update on physics and detector
Update on accelerator
Focus on the results from the Frascati tests of Crab Waist principle
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

3. AND AT WITH A REASONABLE ELECTRICITY BILL!
Guiding principles
Flavour Physics was recently in the front line of the stage thanks to the e+ e- factories.
What in the next decade will e+ e- factories say about new physics and contribute as complementary to LHC and LHCb ?
A LOT!
Providing they can produce more than and b, c and t pairs in 5 years and from then accumulate more/year.
AND AT WITH A REASONABLE ELECTRICITY BILL!
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

4. HAWAII 2005
II Joint Meeting Babar-Belle on Super BFactory
At that time it was clear that:
A Super BFactory was not possible in Slac
PEPII was not likely running too long
The possible road to High Lumi was HIGH CURRENT
No technology ready for detectors with expected BKG if luminosity higher than
MORE IMPORTANT: for some of us the needed integrated luminosity to hit the target of New Physics is >50 ab-1 and peak>10 36, better 3-5 times higher.
BUT ! !
DISTRESS ! !
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

5. From Linear Super Bfactory to SuperB
Initial proposal was very exotic (linear colliding machine with recicling in damping rings), but seemed to us VERY APPEALING FOR PHYSICS since it was promising high lumi with low currents (low BKG and LOW WALL POWER! )
It was unfeasible and after the first 2 SuperB workshops the conceptual design was converging to the present.
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

6. Luminosity For gaussian bunches:
geometrical
Reduction factor
Ne+ ( Ne- ) is the number of positrons (electrons) in a bunch
fcoll is the collision frequency
σx (σy) is the horizontal (vertical) r.m.s. size at the I.P.
Rl is the Luminosity Reduction factor by incomplete overlap: crossing angle and “hour glass” effect.
TRADITIONAL (brute force): increase the numerator Currents increase: from 1A on 2 A up to 4.1 A on 9.4 A- Wall Plug Power, HOM,CSR: hard to surpass cm2s-1 Crab Crossing to increase Rl and to optimize beam dynamic
SuperB: decrease the denominator (same currents as PEP-II) Bunch sizes: from σy = 3μm down to σy = 40 nm Luminosity: 1036 cm2s-1 ( baseline) . Crab Waist and large Piwinsky angle to optimize beam dynamic
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

7. To proceed the validation of simulations was necessary.
Right solution?
It appeared as the solution for the high luminosity at a reasonable wall power
(≤ 30 MW as in PEPII)
BUT:
To proceed the validation of simulations was necessary.
The large Piwinski angle scheme and crab waist needed to be tested.
Preliminary results on test are now available
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

8. Physics on CDR (comparisons with 50 ab-1)
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

9. UTfit as now and with SuperB
1 ab-1
50 ab-1
With 50 ab-1 g is measured at 1° level
Triangle vertex
Determined by N.P.
free processes
Theoretical uncertainties on sides could be reduced: (V.Lubicz, SuperB IV Villa Mondragone nov.2006)
Vub : 2% (excl.) 2% (incl.)Vcb : 1% (excl.) 0.5% (incl.)
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

10. The case for a high luminosity flavour factory
Prejudice: if there is New Physics at the TeV scale it must have a flavor/CP structure
New heavy quanta can be detected through precision measurement of processes involving loop diagrams
Statistics of O(50 ab-1) is necessary to reduce the experimental error below the theoretical uncertainty for the most sensitive analyses
Physics reach is complementary to LHC-LHCb:
many rare decays are not accessible at LHC;
sensitivity to off-diagonal term of squark mixing matrix,
test of LFV in t decays
Probably add another slide with the references and comparison with LHCb sensitivities.
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

11. CPV in rare decays (PENGUINS)
Channel
Goal
3 ab-1
10 ab-1
50 ab-1
5%
16%
8.7%
3.9%
5.7% 3% 1%
8.2% 5% 4%
SM 2%
11% 6%
SM 5%
1.0%
0.5%
0.6%
0.3%
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

12. Rare Decays Goal 3/ab 10/ab 50/ab MEASUREMENT B(BD*tn) SM: B: 8x10-3
10.2%
5.6%
2.5%
B(Bsnn)K,K*
SM:Theory ~5% 1 excl: 4x10-6
~1s
>3s
>4s
B(Binvisible)
<2x10-6
<1x10-6
<3x10-7
B(Bd mm)
~8x10-11
<3x10-8
<1.6x10-8
<7x10-9
B(Bd tt)
~1x10-8
<1x10-3
O(10-4) ?
B(t mg) now<
(few)10 -9
B(t mKs) now <
<10-9
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

13. BUT MORE IMPORTANT…… SuperB Physics case
There is a solid case for a SuperB collecting between 50 and 100 ab-1 ( B, charm, t pair)
Precision measurements allowing to detect discrepancies from the standard model
Reduced theoretical uncertainties will allow this in many channels
Rare decay measurementsstudy
Lepton flavour violation
In addition: possibility to run at tau/charm threshold, polarized beam
Complementarity with LHC has been studied in the CERN workshop Flavour Physics in the era of LHC .
(M.Mangano,T.Hurth to be published soon as CERN yellow report)
See in addition to SuperB CDR:
The Discovery Potential of a Super B Factory (Slac-R-709)
Letter of Intent for KEK Super B Factory (KEK Report )
Physics at Super B Factory (hep-ex/ )
SuperB report (hep-ex/ )
Many documents available at the URL :
BUT MORE IMPORTANT……
THE UNEXPECTED DISCOVERY FROM A FRONTIER MACHINE
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

14. Sharpening on the Physics Reach of SuperB
Physics Retreat in Valencia Jan.7-15,2008
Following informal suggestions of IRC.
Update on physics (potential discovery of New Physics with a 75 ab-1 in 5 years ) for B, Charm, Tau’s and new Spectroscopy .
Examine carefully the potential benefits of running at 4GeV c.m.s. Energy and of the Polarization.
Organize the preparation of the simulation tools to evaluate the correct experimental sensitivity to the most relevant physics channels
The report is now in the final editing stage.
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

15. After Valencia Physic Retreat some highlightb
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

16. (B PHYSICS) Comparison 10ab-1 with 75 ab-1
In CDR all comparisons for 50 ab-1
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

17. GOLDEN MODES X X X- CKM X X X- CKM X X
The GOLDEN channel for the given scenario
Not the GOLDEN channel for the given scenario but can show experimentally measurable deviation from SM.
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

18. Comparison with charged Higgs mass 2 Higgs-doublet model . Bound on
M H+ = 295 GeV at 95% CL.
Comparison with 1/R in minimal Universal Extra Dimension model
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

19. (B PHYSICS) Comparison 10ab-1 with 75 ab-1
Determination of Susy mass insertion parameter (d13)LL with 10 ab-1 and 75 ab-1
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

20. more The best UL < 14 10-6 SM BF= 4 10-6 Presidenza INFN
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

21. SNOWMASS points
SPS4 ruled out by present values of Bsg. Flavour has a great impact already in MFV!
SPS1a is the least favorable for flavour, but SuperB can say at the level of 2 s in several channels as Bsg, Btn, BXS l+l-
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

22. MORE.. B  t n and B  m n combination
exclusion plots in [ M(H+), tan b]
200 ab-1
10 ab-1
75ab-1
2 ab-1 20 40 60
R= (B l n )/ (B l n )SM in
2HDM with m(H+)=500 GeV
BF of Bt n is higher than Bm n, but
With the B beam method and high lumi the use of Bm n is almost systematic free due to a cleaner identification of the lepton.
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

23. COMPLEMENTARY FLAVOUR meas. AND LHC
IF LHC DISCOVERS SUPERSYMMETRY
Red are LHC+EW constraints+SuperB
Blue is LHC alone
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

24. Lepton Flavour Violation
The B factories are also  factories
(+  -) = 0.89 nb at s = M()
Total sample of ~1.5 billion taus
90% CL limits
Br ( -  e-g ) < 12 x 10-8
Br ( -  m- g ) < 4.1 x 10-8
Br ( -  e- g ) < 11 x 10-8
Br ( -  m- g ) < 6.7 x 10-8
Belle result
BaBar result
Excluded region
R.Barlow ICHEP06
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

25. TAU LFV (use of polarization)
Polarization is only partially used in this estimate. An optimization of the BKG rejection is in progress. But Pol. helps to discriminate models. In some model there is a strong effect on the angular distribution of m from signal:
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

26. Comparison with Snowmass points on Tau using also polarization
SuperB with 75 ab-1, evaluation assuming the most conservative scenario about syst. errors
LFV
5s disc
1÷2
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

27. Start with the expt. with m
Tau g-2
Start with the expt. with m
<1
Make use of all the informations (total x-section,angular distribution, f-b asymmetry. Measure Re and Im parts
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

28. CHARM Mixing from Dalitz analysis
Results from Belle
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

29. CP violation can be studied in high statistics as:
CPV in Charm
CP violation can be studied in high statistics as:
Indirect in the mixing
Direct in the decay
With very high statistics at Y4S together with tau and B physics
BUT time dependent analysis is needed for CP violation in the interference mixing-decay,for it runs at charm threshold production are needed in asymmetric factory mode .
D0K+K- and D0p+p- can be studied with time dependent analysis and ff can be extracted.
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

30. Dedicated runs at the tau/charm threshold feasible
options
Dedicated runs at the tau/charm threshold feasible
Electron polarization scheme is very important ( ≥ 80%)
Polarized electron source
Electron spin manipulation to provide longitudinal IP
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

31. SOME UPDATE ON Super B Presidenza INFN Marcello A. Giorgi
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

32. Machine Parameters (slightly different from CDR)
150m needed for Polarization
Baseline
LEB
HEB
Circumference was 2200 m
Asymmetric bunch size to optimize beam lifetime (Toushek effect)
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

33. SuperB parameters with higher Wall Power
Doubling currents
with a factor 2 in
Wall power we can
double the luminosity
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

34. Lattice layout, PEP-II reuse
Total length 1800 m
280 m
20 m
Dipoles
Lmag (m)
0.45
5.4
PEP HER -
194
PEP LER
SBF HER
130
SBF LER
224 18
SBF Total
148
Needed 30
Available
Needed
Quad.
Lmag (m)
0.56
0.73
0.43
0.7
0.4
PEP HER
202 82 -
PEP LER
353
SBF HER
165
108 2
SBF LER 88
SBF Total
253
216 4
Needed
51*
134
All PEP-II magnets are used, dimensions and fields are in rangeRF requirements are met by the present PEP-II RF system
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

35. SuperB expected LUMI
>80ab-1 in 7th year
After 7th year integrated Luminosity can grow at rate of 40 ab-1/year
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

36. INGREDIENTS for the proof of principle
Very low emittance project (John Seeman talk)
Test on CRAB WAIST (see M. Biagini, P.Raimondi talks)
Polarization (a lot to be done see U.Wienands talk)
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

37. MEMO for IRC and P5 Presidenza INFN Marcello A. Giorgi
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

38. ON DETECTOR
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

39. SuperB Detector
Babar and Belle designs have proven to be very effective for B-Factory physics
Follow the same ideas for SuperB detector
A SuperB detector is possible with today’s technology. Main issues:
Machine backgrounds – somewhat larger than in Babar/Belle
Beam energy asymmetry – a bit smaller
Strong interaction with machine design
Try to reuse parts of Babar as much as possible
Quartz bars of the DIRC
Barrel EMC CsI(Tl) crystal and mechanical structure
Superconducting coil and flux return yoke.
Moderate R&D and engineering required
Small beam pipe technology
Thin silicon pixel detector for first layer
Drift chamber CF mechanical structure, gas and cell size
Photon detection for DIRC quartz bars
Forward PID system (TOF or focusing RICH)
Forward calorimeter crystals (LSO)
Minos-style scintillator for Instrumented flux return
Electronics and trigger
Computing – large data amount
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

40. Detector Layout – Reuse parts of Babar (or Belle)
BASELINE
OPTION
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

41. Detector R&D Progress Test beam goals for 2008-2010 Lots of progress
Silicon Vertex Tracker
MAPS pixel devices: resolution, efficiency, readout speed
Advanced trigger systems (Associative Memories)
Drift Chamber
Cell size, shape, and gas mixture
Particle ID system (forward system)
Radiators (Aerogel, NaF)
Photon detector (MCP, MAPMTs, SiPM)
Timing for TOF system
Electromagnetic Calorimeter
Forw: LYSO Crystals leakage, resolution, mechanical structure
Back: Lead-scintillator calorimeter resolution
Instrumented Flux Return
Scintillator, fibers, photon detector, readout electronics
Detection efficiency, time/space resolution
Integrated slice
Track trigger, material in front of EMC, timing for TOF, forward PID options
Lots of progress
R&D technical progress in all detector subsystems
Started the definition of strategies for Electronics and DAQ design
Large computing effort for simulation
Subdetector groups are building up  collaboration
SuperB is included in the DevDet FP7 proposal
Improve infrastructure for detector R&D
Mainly focused on improving LNF Beam test facility
Electronics and software network
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

42. Progress in simulation
Development of both fast (parametrized) and full (Geant4) simulation programs started.
Reuse Babar code where possible
Remove dependencies from private Babar code to allow redistribution to outside Babar
Use more modern approach to geometry description (GDML, developed for LHC)
Fast simulation targeted at physics benchmarking
Geant4 simulation targeted at backgrounds
Geant4 Model
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

43. Background simulation
Lattice “MAD” decks can be transformed into G4 geometry
Machine elements and apertures are then introduced into the full simulation for evaluation of backgrounds
Touchek background simulation is benchmarked with Dafne results
Good agreement
Optimization of collimators is needed after each lattice adjustement
Background rate in the KLOE forward calorimeter vs. position of the internal jaw of a collimator
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

44. ON THE SITE
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

45. TOR VERGATA site, close to LNF
Ring length =1650m+150m for polarization
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

46. …and now….
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

47. From Manchester (‘07) : to Lisboa (’08) : Twice to ECFA
REPORT BASED ON CDR
Ecfa has appointed a subcommittee chaired by T. Nakada as a contact group with SuperB
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

48. After the present phase
If we receive green light from IRC we would consider ended the CDR phase.
The SuperB community is ready to start the organization towards the preparation of a TDR.
We need the set up of the structure of the collaboration including governance rules.
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

49. After the present phase
Build the technical structure for the machine and detector project :
Collect resources for the machine design.
Organize the project group for site and infrastructure.
Organize the detector community for the next steps.
Prepare test of subdetectors.
Build the s/w tools (not only simulations) for detector optimization and for physics.
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

50. After the present phase
Machine-Detector-Physics as closely interleaved in SuperB. The coordination of the project as whole is necessary and it will continue in the future.
An oversight body reflecting in its composition the international inspiration of the SuperB enterprise would be more than useful.
A MAC to periodically monitor the machine progress would be necessary as well as the monitoring of the detector project and construction.
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

51. May –June 2008
Mid may start at SLAC discussion on disassembly including data base of Babar and of the usable components of PEPII.
Disassembly of the Babar alone estimated 18 months.
IMPORTANT ! Contribution to this phase from engineers of various institutions .
End may Super B meeting at Elba. It will be attended by the Ecfa contact group (Nakada,Karyotakis, Linde, Spaan).
End june accelerator committee as a future MAC (Dorfan committee) will meet in Genova after EPAC with the SuperB proponents.
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

52. Set up Machine organization
Set up Machine organization
Preassembly the collaboration of SuperB Project.
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

53. END
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

54. Accelerator and site costs
Note: site cost estimate not as detailed as other estimates.
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

55. Detector cost
Note: options in italics are not summed. We chose to sum the options we
considered most likely/necessary.
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi

56. END
Roma 29 April,2008
Presidenza INFN
Marcello A. Giorgi