1. SIDDHARTA Setup SIDDHARTA Kaon monitor focusing quads bhabha monitor
lead shield
gamma monitor

2. Machine luminosity monitors and IP diagnostics tool
e+ e-  e+ e- g (8.5e % 1.7mrad) e+ e-  e+ e- Z g (<10% background)
e+ e-  e+ e- g g (6.6e-29 15% 1.7mrad) now limited by accidentals and chamber vertical acceptance)
e+ e-  e+ e- Bhabha scattering - more clean process cm-2 s-1
F. Bossi, P. Branchini, B. Buonumo, G. Mazzitelli, F.Murtas, P.Valente
DAFNE-KLOE collaboration with the support of SSCR

3. Luminosity monitor for SIDDAHRTA run
TILE CALORIMETER
g MONITOR
PbWO4 crystal
GEM RING

4. Tile Bhabha calorimeter (lumi)
4 calorimeter composed by 5 30o sectors
7 lead sheet 5mm - 3 final lead sheet 10mm
12 30o scintillating tile for sector
3 WLS each tile
1 PM for any sector (20 PM)
12.5 X0 15% 510 MeV
First tail Russian sample arrived
WLS installed and light emission tested
BTF test planed for October
PM, Electronics and DAQ by KLOE

5. A 3GEM Monitor for DAFNE rectangular GEM prototype under test @ DAFNE
10 cm
2.4 cm
Annular gem foil design for bhabha DAFNE
2.4 cm
64 pads
10 cm
The read out has been realized using 8 chip ASDQ (8 channel each)
Test at BTF
99% efficiency for electron (signal in bhabha measure)
~ 1% efficiency for photons (background in bhabha measure)
channels

6. 3GEM monitor test on DAFNE
On April 2007 the 3gem chamber has been put at zero degree on DAFNE
for photon detection coming from the FINUDA interaction region
e -
3GEM
e +
lead
beamstrahlung g
number of photon vs time and FINUDA luminosity
photon spot-size