B-field calculation

$p_e = 14 \frac{MeV}{c} = 7.47 \cdot 10^{-21} \frac{m\cdot kg}{s}$

$B = \frac{p_e}{q_e \cdot R}$

$1T=\frac{kg}{C\cdot s}$, $q_e = 1.6\cdot 10^{-19} C$

$B(T) = \frac{4.67\cdot 10^{-2}}{R(m)}$