s 
an exciter providing a sinusoidal momentum kick. The usage in this case is 
<p>
<p>xykick: KICKER, SINKICK=integer, SINPEAK=real, SINTUNE=real, SINPHASE=real; 
<p>xkick : HKICKER, SINKICK=integer, SINPEAK=real, SINTUNE=real, SINPHASE=real; 
<p>ykick : VKICKER, SINKICK=integer, SINPEAK=real, SINTUNE=real, SINPHASE=real; 
<p>
where a sinusoidal momentum kick dpz as a function of the 
revolution number n given by 
<p>
dpz(n)=SINPEAK * sin(2*PI*SINTUNE*n + SINPHASE), pz=px,py 
<p>
is provided. So, the variab