You can attached image when you post forum message.
[img]http://www.phy.ntnu.edu.tw/ntnujava/index.php?action=dlattach;topic=2231.0;attach=4286;image[/img]

1. Do you mean there is a continue beam of atom moving toward a screen with two slits?
2. Does atom move with the same speed v (or random speed),separated by the same distance(or randomly)?
3. What do you mean by "detector click or not"??? How to decide?
4. What kind of information need to be recorded/shown? 

All the information need to be provided in order to create a simulation!