SuperB update The next step in flavor physics in Europe

SuperB update

The next step in flavor physics in Europe

David W G S Leith

Japan has come to a similar set of priorities, and created a joint Lepton Group to work on ILC R&D, Neutrino and B physics.

“Flavour physics and precision measurements at the high-luminosity frontier

at lower energies complement our understanding of particle physics and allow

for a more accurate interpretation of the results at the high-energy frontier;

these should be led by national or regional collaborations, and the

participation of European laboratories and institutes should be promoted.”

The INFN-hosted SuperB Factory has been able to establish its case due to an important nuance between the European and US strategies.

Europe1) LHC (and LHC consolidation)2) Accelerator R&D3) ILC4) Neutrino5) astrophysics and cosmology6) Flavour physics

US1)LHC2) ILC3) ILC hosting efforts4) astrophysics and cosmology5) Neutrinos6) Flavour Physics

The story in Italy and Europe

The INFN-hosted SuperB project is now firmly establishedas a part of the long range strategic plan for HEP inEurope. There are regular sessions of the CERN Council, (in its role as steward of European HEP), devoted to reviewof progress of the SuperB project.

The Board of Directors of INFN approved the SuperB TDR SuperB TDRactivities as a “Special Project” in the spring of 2009 toactivities as a “Special Project” in the spring of 2009 tosupport the international activites, and utilize the INFN andsupport the international activites, and utilize the INFN andLazio regional financial resources made available to theLazio regional financial resources made available to theproject.project.

1) A substantial financial request from Ministry of research has been adressed to the Infrastructure Interministerial panel

2) An exploitation program with the Italian Institute of Technology (IIT) of synchrotron light from SuperB has been designed with five extracted beam lines

3) The corresponding funding has been preliminary favourably discussed at IIT and adds to the construction funds

The approval path

Frascati Lab site

Tor Vergata site

Feb 11, 2010 F.Forti - SuperB Status 7

Collider Hall (12x30m)

area for cooling towers

Existing BuildingGuesthouse

2 “SLAC type buildings” (20x35m) housing 6 klystrons each plus magnet power supplies

Electrical Substation upgradable up to 2x63MVA transformers


Geological Survey

8

ParametersHER LER

Energy (GeV) ~7 ~4

Luminosity (cm-2 s-1) 1x1036

Circumference (Km) 1.32

Crossing angle (rad) 66x10-3

N. of bunches 1028

Current (A) 1.9 2.5

Y Tune shift 0.1 0.1

X Tune shift 0.002 0.003

x* (cm) 2.4 3.2

y* (mm) 0.25 0.22

x (nm) 2.2 2.2

y (pm) 5.5 5.5

x* (m) 7.3 8.4

y* (m) 0.035 0.035

l (mm) 5 5

Wall plug power (MW) 17

Energies can be varied , still maintaining the high polarization, away from nominal 7/4 .Possible optimal are:4.18/6.71or 3.85/7.27

• Design based on the “large Piwinski angle and crab waist sextupoles” collision scheme, tested at DANE -Factory with an increase in peak luminosity of a factor of 3 w.r.t. previous scheme

• The aim is to satisfy the physics requirements– Very high luminosity (from 1 to 4 1036)– Flexible parameter choices.– High reliability.– Longitudinally polarized beam (e-) at the IP (>80%).– Ability to collide at the Charm threshold. (Ecms=4.0 GeV)

SuperB Accelerator Update

• Flexibility : Luminosity of 1036 it is not a “singularity” in the parameter space. It can be achieved with different settings of parameters, varying independently their values from nominal as:– Increase vertical emittance in HER and LER by x4– Increase y* by 40% in both rings– Increase vertical emittance and y* by 40% in both rings– Increase x and y emittance by 40%– Decrease Vertical tune shift from 0.117 to 0.09

• Maximum currents: 3.5 A in both rings (based on RF best design), however the nominal operating is ≈ 2.1 A• Energy asymmetry : Being the choice 4.0/7.0 not good for

polarization• Reasonable choice are:

– 4.18/6.71 (best for machine optimization!)– 3.85/7.27 (higher boost better for detector performance but more

power expensive)

Latest studies

Latest studies• Machine layout updated (very flexible lattice), including

design of injection, RF and ring crossing straight section opposite to IP

• Beam parameters are now fixed• Beam-beam simulations (with codes benchmarked with

DANE measurements) give feasible and flexible design satisfying the physics requirements.

• Design of the injection system almost completed (includes polarized e- gun, damping ring, bunch compressor, e+ source, linac)

• Baseline machine around 1.3 Km long with:– Spin rotators in LER (electrons, ~4 GeV)– Positrons in HER, ~7 GeV

Rings Layout

60 mrad IR

Dogleg140 mradRF RF

LER SR LER SR

HERarc

LERarc

HERarc

LERarc

e+e-

C = 1323.03 m

David W G S Leith

IIT interested in …………• lithography for 3D scaffolding for bio-engineering

• laser ablation on biomaterials

• femtochemistry studies

• photon induced growth for material science

• innovative interface diffraction techniques

• imaging in biomedicine

• X ray microscopy

Physics update

The Physics effort is the result of the close coordination between theorists and experimentalists:

• ~ 35 theorists coordinated further elucidate the New Physics potential of The super Flavour Factory

• ~60 experimentalists evaluate the experimental sensitivity to New Physics from studies of Charm, b, and from spectroscopy.

The table of requirements for the Machine is substantially confirmed.

PHYSICS

Exploration of CKM parameters at 1% precision.

New physics in search for CP violation in D decays, in search LFV in tau decays, in search CP violation in tau decays.Sensitivity to N P phenomena up to energies ~ 30 Tev (beyond LHC energies)

David W G S Leith

Budget Briefing with OHEP Staff: Feb 25, 2010 Page 22

Super B CDR Detector BASELINE

OPTION


SuperB Detector Design Starts From BaBar

• From Machine and Environment: • Smaller Boost (6.7 x 4.18 GeV; =0.24)

Smaller radius beam-pipe to retain adequate vertex resolution. Larger barrel acceptance. More particles backward with somewhat softer spectrum forward

• Some (though not all) components of machine background components will be substantially larger.

Improve detector segmentation, speed, and radiation hardness as needed

• From general physics goals, which emphasize rare decays, LFV in t physics, and recoil (n) physics• Would like best possible hermeticity, good subsystem efficiency and

performance. • ~ x 50 Luminosity

• Improved trigger, DAQ, & computing • Last, but not least, must replace aging components and technologies.

23

Physics demands and experimental environment drive the needed upgrades


International situation

• US– SLAC + many universities– DOE requested paper to assess scenarios for US partecipation to

SuperB. – Three scenarios:

• A: provide PEP-II / Babar components without additional contributions• B: A + detector only contribution• C: B + accelerator contribution

– Draft completed and being revised– Complete document by next week

• Canada: – Carleton, McGill, TRIUMF, UBC, U. de Montreal, and Uvic– Drift chamber activities– Funding for the TDR phase


International Situation II

• France– SuperB TDR participation approved at IN2P3 scientific Council in June

2009– IRFU/CEA, LAL, LAPP, LPSC, LPNHE collaboration – Various aspects of accelerator design– Seismic noise measurement– Electronics and PID

• UK– Funding cuts make the situation uncertain– QMUL/RAL working on SVT design

• Russia– BINP involved in accelerator and detector work

• Poland– Recent new addition of Krakow – Becoming involved

• Spain – Barcelona and Valencia trying to expand the spanish participation

• Norway, Israel


Italy

• End July 2009- The Italian Minister of Science has presented the SuperB proposal for funding to the Interministerial Committee for Economic Planning (CIPE)– Total of about 700M€ for infrastructure, accelerator and computing– Detector will be funded through normal channels in HEP funding

agencies• Proposal done in consultation with IIT (Istituto Italiano di

Tecnologia)– Exploit synergies with material science research– Possibility of photon beam lines out of the HER

• Decision expected soon - weeks– Most likely an initial 50-100M for civil design and construction– Then the rest after a full blown budget estimate and review– INFN President scheduled to talk at the CERN council on March 18th

The End

David W G S Leith

Summary of Physics Goals• Increase by ~ a factor of ten, the precision of BaBar &Belle (*)

• Challenge CKM at the level of 1% • tau LFV sensitivity improvement by a factor between 10 and 100.

• Explore T-violation in t .

• Search for magnetic structure of t .

• Explore CPV in Charm.

• Continued new spectroscopy exploration.

The goal is to gather ~ 75 ab-1 in 5 years at Y(4s), and a few months at Charm threshold with a peak lumi of 10 35 cm2 s-1.

33Marcello A. GiorgiPerugia June 15,2009

The Italian Ministry of Science and Education has asked theThe Italian Ministry of Science and Education has asked theEconomy Ministry to fund SuperBEconomy Ministry to fund SuperB with the funds to come fromwith the funds to come frombeyond the normal INFN budget. There are regular, bi-monthlybeyond the normal INFN budget. There are regular, bi-monthlydiscussions at the highest level of the Italian government, on discussions at the highest level of the Italian government, on the financial arrangement for the next fiscal year, and highthe financial arrangement for the next fiscal year, and highhopes of a positive announcement of project approval before hopes of a positive announcement of project approval before the end of this year. the end of this year.

After a two day meeting at LNF, in September, the INFN Board After a two day meeting at LNF, in September, the INFN Board of Directors gave their unanimous support to the President’s of Directors gave their unanimous support to the President’s vision of SuperB as the focus of the national HEP program.vision of SuperB as the focus of the national HEP program.


Model for US Involvement• Provide an exciting new physics opportunity at the

Luminosity Frontier.• Match community interests in the physics, detector and

software to allow the formation of the strongest US group

• Provide upgraded US owned subsystems that provide highest value-added to SuperB.

• Provide exciting new opportunities for innovative hardware/software development by the US groups.

• Leverage expertise and facilities to maximize productivity for SuperB and the US groups , and to provide leadership, operational, and physics opportunities for US groups


SuperB+Lattice improvements

tan

tan

SuperB

MH~1.2-2.5 TeVfor tan~30-60

23| |LR

1 10

1

10-1

10-2

(TeV)gluinom

In the red regions the are measured with a

significance >3 away from zero

23| |LR

Arg(23)LR=(44.5± 2.6)o

= (0.026 ± 0.005)

1 TeV

107 BR (

M 1

/2

SuperB

Physics Case..in a page…

David W G S Leith

Flavour physics is a DNA chip for New Physics

Documents

SuperB update The next step in flavor physics in Europe