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--></style></head><body lang=EN-GB><div class=WordSection1><p class=MsoNormal>Coincidences.dat ASCII output contains anihilation point data. See Gate wiki how to read it. Enable ASCII and coincidences. In Gate 6.0 you add command</p><p class=MsoNormal>/gate/physics/addProcess PositronAnnihilationStd</p><p class=MsoNormal>In newer Gate it’s different command. Your source must emit positrons.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I hope that helps</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Marcin Balcerzyk, Ph.D.<br>Unidad Ciclotron,<br>Centro Nacional de Aceleradores,<br>Universidad de Sevilla-CSIC-Junta de Andalucia,<br>Parque Tecnólogico Cartuja 93, <br>c/Thomas Alva Edison Nº 7, <br>41092 Sevilla (Spain),<br>Tel.: (+34) 954 460 553 ext. 236, <br>Fax: (+34) 954 460 145,<br>mobile:(+34) 697 322 126<br>Skype: balcerzm</p><p class=MsoNormal><o:p> </o:p></p></div></body></html>