Table 2.

Details of simulated layers of the J-PET geometry. J-PET detector has been already built [1]. The mechanical construction for the next phases J-PET+1 and J-PET+2 is also prepared and the hardware upgrade is planned within the next 2 years

Layer number	Layer radius with respect to the center of scintillator (cm)	Number of scintillators in the layer	Angular displacement of $n_i$ scintillator
J-PET
1	42.50	48	$n_i\times 7.5^{\circ }$
2	46.75	48	$n_i\times 7.5^{\circ }+3.{75}^{\circ }$
3	57.50	96	$n_i\times 3.{75}^{\circ }+1.{875}^{\circ }$
J-PET+2
1	42.50	48	$n_i\times 7.5^{\circ }$
2	46.75	48	$n_i\times 7.5^{\circ }+3.{75}^{\circ }$
3	50.90	96	$n_i\times 3.{75}^{\circ }$
4	53.30	96	$n_i\times 3.{75}^{\circ }+1.{875}^{\circ }$
5	57.50	96	$n_i\times 3.{75}^{\circ }+1.{875}^{\circ }$
J-PET+1
1	42.50	48	$n_i\times 7.5^{\circ }$
2	46.75	48	$n_i\times 7.5^{\circ }+3.{75}^{\circ }$
3	53.30	96	$n_i\times 3.{75}^{\circ }+1.{875}^{\circ }$
4	57.50	96	$n_i\times 3.{75}^{\circ }+1.{875}^{\circ }$
J-PET-full
1	43.0	400	$n_i\times 0.9^{\circ }$
2	45.0	437	$n_i\times 0.{82}^{\circ }$
3	47.0	473	$n_i\times 0.{76}^{\circ }$
4	49.0	508	$n_i\times 0.{71}^{\circ }$