General Introduction to IFR
W. Baldini, INFN-Ferrara
XIV SuperB General Meeting,
Frascati Sept.27 – Oct.1 2010
Overview
Introduction to the IFR
News since Elba Meeting
Ongoing activities
Goal for the meeting and plans for the TDR
Other IFR contributions
The IFR Baseline Detection Technique
• Magnet Flux Return instrumented to
detect Muons and KL
• BaBar-like detector with hexagonal
barrel and two encaps
• Plan to re-use BaBar IFR structure,
adding iron to improve μ-ID
• Scintillator as active material to cope
with higher flux of particles
• Minos-like scintillator bars readout
through WLS fibers and Silicon PhotoMultipliers
• 8-9 active
layers
μ
Readout Options
res~20cm
Time readout Option (TDC-RO): the hit bar gives the
first coordinate while the signal arrival time provides
the second
• measure the 2 coordinate at the same time
• 1ns time resolution  ~ 20cm
• need TDC readout for each channel
• relatively simple to be constructed
Binary readout Option: (BI-RO): the two coordinates
are given by two planes of orthogonal scintillator bars:
• high combinatorial
• simpler (and cheaper) electronics
• more complex construction
Both option will be tested on beam thanks to a full scale prototype
Active Layers Main components
SCINTILLATORS: produced by extrusion at FNAL in
the FNAL-NICADD facility
• thickness: 1.0cm for TDC-RO
• 2.0cm for BI-RO
• coated with TiO2 (co-extruded)
WLS FIBERS: two types under test
• Saint-Gobain BCF92: fast (decay time 2.7ns) but limited
light yeld
• Kuraray Y11: slower (decay time ~ 9 ns) but ~20% higher
light yield
SiPM: produced in Trento by IRST-FBK
• 1.2x3.2 mm2 to match 3 fibers ϕ=1.0mm
• 1.4x3.8mm2 for ϕ=1.2mm fibers
• array of 3 round SiPM ϕ=1.4mm
The Prototype
Active Layers
(Pizza Boxes)
A full scale prototype is being developed to measure on beam the
performances and test different readout options:
• Muon-ID for different iron-scintillator configurations
• Detection efficiency
• Time resolution
More detailed description in the next talk
A full prototype simulation has been
developed:
Simulations
TDC-RO
μ
X and Y separate
Layers for Bi-Ro
Bi-Ro
• It takes into account the realistic condition of
the testbeam (e.g. 18 cm of iron in front of the
prototype)
• It simulates both types of Layers: TDC-RO
and BI-RO, for the latter the two layers are
simulated separately
• It allows to move the active layers in different
slots, to study the best configuration
Goal for this meeting
• Review the status and the achievements for all the
ongoing activities
• Particular focus on:
• Prototype finalization and local tests (cosmics, source)
• Detailed planning and coordination of the the testbeam
• Analyze the TDR preparation process and
• Organize the medium term activities
IFR Sessions
Monday Sept-27
Monday Sept-27
Wednesday Sept-29