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<p>Dear Gate users,</p>
<p>I am actually working on external radiotherapy applications with 6MV photon beam. I need to generate electron fluence spectrum differential in energy in a volume of water in terms of
<b>Path length per unit volume </b>(Φ<font size="-1">E</font>=<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif;
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!important; float: none;">∑path
length of particle i in V / V) </span> and <b>not</b> as particle counting (dN/da). Is there an already implemented actor that can do that in GATE? </p>
<p>Another question regarding Filters. Is it possible to apply two filters at the same time, for exemple when applying particle filter is it possible to filter on particle type (e-) and parentparticle(gamma)?</p>
<p>Best Regards,</p>
<p>Tony Younes<br>
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