Characterization of mixed Bi4(Ge<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e1096" altimg="si9.svg"><mml:msub><mml:mrow /><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:math>Si<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e1104" altimg="si10.svg"><mml:msub><mml:mrow /><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:math>)3O12 for crystal calorimetry at future colliders

Bismuth germanate (BGO) is a well known high density scintillating material widely used in many applications such as energy physics and medical imaging. silicate (BSO) features properties similar to BGO terms of stopping power Cherenkov photon yield with lower scintillation light output but faster decay time, thus being more attractive for high-rate environments. Mixed crystals Bi 4 (Ge x Si 1 − ) 3 O 12 (BGSO, varying from 0 1) make it possible optimize time based on the detector needs. A characterization campaign optical two sets BGSO mixed Ge fraction 100% was performed. coincidence resolution (CTR) at 511 keV 208 ±2 ps FWHM measured 2 × mm pixel 40% Ge, while optimum value obtained effective 49.9 ±1.8 ns 6 0.7 plate-shaped sample 30% Ge. Furthermore smallest slow component achieved 101 largest 236 ±5 pure same geometry. In addition we demonstrated possibility efficiently separate produced BSO sample. Such technique could be exploited crystal-based dual-readout calorimeter improve hadronic showers jets.