Table 1 (abstract A9). Design and performance parameters for mini EXPLORER II

Ring diameter

52cm

Axial FOV

48.3cm

Scintillator

LYSO

Crystal element size

2.76x2.76x18.1 mm³

Photodetector

SensL J-series SiPM

Timing resolution

409±39ps

Energy resolution

11.7%±1.5%

Energy window LLD

430 keV

Coincidence timing window

2.7ns (local section) and

2.9ns (inter-section)

NECR peak (NEMA NU4-2008)

1,762 kcps at 59kBq/cc

Scatter Fraction (NEMA NU4-2008)

17.8%

NECR peak (NEMA NU2-2012)

298.7 kcps at 8.4kBq/cc

Scatter Fraction (NEMA NU2-2012)

41.9%

Sensitivity (NEMA NU2-2012)

55.3 kcps/MBq at 0cm

59.0 kcps/MBq at 10cm