1. Quad-calorimeter for KLOE-2
New Dafne scheme proposed by P. Raimondi to increase machine luminosity by a factor O(5)  crab waist
The KLOE detector has proven to well face the challenge nevertheless, some R&D are in progress to add new sub-detectors.
We present a new quadrupole calorimeter to increase acceptance (QCALT).
There are a lot of physics items that can gain from this upgrade.
In particular, the last KLOE measurement on BR(KSgg) (JHEP 0805:051,2008).
The R&D for Tesla/ILC made possible a
very promising tile detector: Square
tiles with fibers in circular grooves
The readout of the tiles is possible
with SiPM
QCALT are 2 tile calorimeters with dodecagonal structure. Sampling of tungsten and scintillator tiles readout by SiPM
Total calorimeter length: 1m
5x5 cm2 tiles along Z
Total calorimeter
depth 4.75 cm
equivalent to
5.5 X0
Scintillator 5 mm
Tungsten mm
Air mm

2. Quad-calorimeter for KLOE-2
In this poster, we present the design and the performances of the accepted detector. In particular the studies and realization of detector components:
Scintillator tiles
SiPM
Fibers
We present a new custom electronics to manage signals from SiPM and to HV regulation.
For the system made by: BC408, Saint Gobain multi cladding fiber and Hamamatsu 400 pixels SiPM, we obtain a response of 32 pe/mip with a time resolution of 750 ps.
Obtained light yield and time resolution
are already sufficient for our purposes.
The realization of a module-0 QCALT (1/12th) is now in Laboratori Nazionali di Frascati.
KLOE-2 IP
5 mm tile
32 pe/mip
st=750ps
energia tra 20 e 300 MeV