Lateral spread

Lateral spread of signals in Elemag and Hadron calorimeter is generated assuming the following formula.

$$F(x)=a_1 \exp^{-\vert x\vert/b_1} + a_2 \exp^{-\vert x\vert/b_2}$$ (1)

where, a1, a2, b1, b2 are parameters which characterize the lateral spread of signals in calorimeters. In the Quick Simulator, they are defined in the subroutine smrshw. They are show in the table below.

 

Table 1: Standard parameter for shower shape generation.

	Elemag Calorimeter	Hadron Calorimeter
a1	0.07/1.263	1.0/11.40
b1	0.45	2.20
a2	0.50/1.263	0.50/11.40
b2	1.20	7.00