<html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> </head> <body bgcolor="#FFFFFF" text="#000000"> <meta http-equiv="content-type" content="text/html; charset=utf-8"> <span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 12.8px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px; display: inline !important; float: none; background-color: rgb(255, 255, 255);">Dear GATE users, I have defined a trapezoid scintillator crystal. It seems to be right. However, when I visualize the crystal it seems that an extra volume exits inside the trapezoid in one corner. I send the figure attached. <span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 12.8px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px; display: inline !important; float: none; background-color: rgb(255, 255, 255);">Does anyone know what is that or if it has any impact on the results? Thank you in advance. Best regards, Ane </body> </html>