1May 10, 2007

Detector group organization For the CDR writing we had identified subsystem

editors/conveners This structure has concluded its function Many thanks for the effort and commitment

We should move forward to the next phase Goals:

Advance the R&D activity as coherently as possible Start creating the infrastructure and doing the work

needed for a Technical Design Report Prepare the ground for the formation of a collaboration

We need to keep a delicate but essential balance: Move forward coherently Leave room for other groups to join

Dal CDR al TDR , occorre una Collaborazione

2May 10, 2007

R&D Perspectives R&D will be funded at the local or regional level

until there is a SuperB collaboration. Groups approach(ed) their funding agencies to

get support for what they’re interested in. Nonetheless now that we have a CDR detector,

coordination of activities is important: Identify the most important R&D issues Avoid duplication of effort Act together to ask for money Provide a structure for new activities or new groups

INFN comincera’ a finanziare nel 2008

3May 10, 2007

R&D Coordination I think it would be useful to setup a structure of

R&D conveners for the subsystems with the job of: Keep track/coordinate activities Help groups focus on what is needed Provide a point of reference for groups or individuals

wishing to participate Help prepare funding proposals or reports

Each subsystem should have one or two conveners Let’s use the rest of this workshop to discuss about

names Not all the vacancies need to be filled now Not a life sentence: which should allow dynamic

adaptation as things evolve

Considerazioni (quasi ovvie) al contorno

4May 10, 2007

Subsystems MDI (including beam pipe) SVT (including Layer0) DCH EMC (including endcaps)(**) PID (including endcaps)(*) IFR (**) Electronics Trigger/DAQ Computing Software

Shopping list, * indica possibile interesse nostro

5May 10, 2007

R&D Review and choices At some point we will need a more formal R&D review

process Committee to review and monitor activity and provide advice to the

management IMHO this should be setup when the collaboration is formed or

forming For some regions it may be advantageous to create this committee

earlier We need to explore the ramifications of this proposal

Eventually we will have to make choices about technology Usual difficult balance between good that works and better that

might not We should use the time in front of us to develop the new

technologies as much as possible Act together as a group working towards an experiment

Minimize pain and disappointment when choices will actually be made by the SuperB collaboration

Ulteriori considerazioni

6May 10, 2007

Software Simulation

We need to ramp up our simulation ability More and more detailed

Connection with physics group and accelerator design Physics studies Background simulation Detector studies

Infrastructure We need to start setting up a software infrastructure

(and group) From repository to framework We’ve been using SLAC/Babar so far. How much

longer ?

Questo riguarda tutti, quindi anche noi!

7May 10, 2007

Last but not least

Infrastructure in Tor VergataWe need to proceed with a feasability study for

the Tor Vergata site It is essential to define building volumes and

functions Experimental hall(s), support buildings and caverns,

shafts, assembly halls, …

We have regular meetings with the Tor Vergata engineers and architects

Need input and answers from the Accelerator and Detector group

Questo non ci riguarda da vicino, ma e’ vicino!!!!

8May 10, 2007

PID Three active groups: SLAC,

Ljubljana, BINP DIRC Barrel readout Forward (Backward PID):

TOF, Focusing RICH

Ratcliff

Projected performance

Per gli amanti della photon detection

9May 10, 2007

Forward PID Physics case Cost/benefit analysis Technology choice/maturity

TOF resolution

Bench tests of fast timing PMTs are encouraging to date. Best results with the laser diode:Best results with the laser diode:

- - s ~ 12 ps for Npe = 50-60 (as s ~ 12 ps for Npe = 50-60 (as expected from 1cm thick Cherenkov radiator).expected from 1cm thick Cherenkov radiator).- - s TTS < 26 ps for Npe ~ 1s TTS < 26 ps for Npe ~ 1..- - Upper limit on the MCP-PMT Upper limit on the MCP-PMT contribution: s MCP-PMT < 6.5 pscontribution: s MCP-PMT < 6.5 ps..- - TAC/ADC contribution to timingTAC/ADC contribution to timing:: s s TAC_ADC < 3.2 psTAC_ADC < 3.2 ps..- - Total electronics contribution at Total electronics contribution at present: s Total_electronics~ 7.2 pspresent: s Total_electronics~ 7.2 ps ..

More to come soon….We plan to continue detector work and confirm TOF performance in a test beam run this year….However, test beams at SLAC after this year are a concern.

Ratcliff

May 10, 2007 SuperB V Peter Kri _an, Ljubljana

4cm aerogel single index

2+2cm aerogel

Focusing configuration – data

Križan

10May 10, 2007

Forward PID

1.3%17'new' PMT with3 MCPs

27%10'old' PMT with

2 MCPs

Average QEdegradation at 800nm

Number of tested tubes

1.3%17'new' PMT with3 MCPs

27%10'old' PMT with

2 MCPs

Average QEdegradation at 800nm

Number of tested tubes

MCP PMT development in BINP Photocathode ageing is rate dependent Counting rate was increased from test to

test keeping the integrated cathode charge constant (~5 nC)

3 MCP PMTs have the same life time as 2 MCP with protective layer

Kravchenko

May 10, 2007 SuperB V Peter Kri _an, Ljubljana

Surface scan with single photons using a narrow time (~10ns) window.

Photon detector candidate: SiPM

_ immune to magnetic field_ high photon detection efficiency up to 70%_ good timing properties (~300ps FWHM)_ no high voltage_ low material budget_ high noise rate ~ 1MHz/mm2_ radiation damage - increase

of dark count rate

1mm

May 10, 2007 SuperB V Peter Kri _an, Ljubljana

Summary_ A proximity focusing RICH with ~20 cm radiator to photondetector distance and ~6x6mm 2 pads is a very promissing option for the endcap region of a Super B factory.

_Single refractive index radiator has an optimal radiator thickness of ~2cm; increasing the thickness results in a degradation of Cherenkov angle resolution per track.

_ A multi layer radiator with varying refractive index in thefocusing configuration allows to improve the performance, a ~5

sigma _/K separation up to 4 GeV/c is expected.

_Such a counter can also be used for TOF measurement _ extend PID capabilities into low momentum region

_RD issues: read -out electronics, photon detector

Križan

11May 10, 2007

EMCActive group in CALTECH (Ren-yuan Zhu)

Hitlin

Interessa anche PG, PD, sinergia con CMS-Roma

12May 10, 2007

Acceptance studies B benchmark Basis for a cost benefit

analysis of a backward calorimeter

Need to commission a full detailed study for the TDR

Forw acc.

Backw. acc.

BKGD/Signalwith smearing

BKGD/Signalwith smearing

Mazur

13May 10, 2007

IFR

For the scintillator we are in 2002 (virtually)

No active group (yet) Need to get going if we

want to be ready in time

Cavoto

R&D NOW (TO DO)

Sinergia con Cuore (+Pd, Fe)