DSGH Installation and Operation Guide 19
Introduction
Source holder
• A cast or welded steel device that houses a radiation-emitting source
capsule
• Directs the radiation in a narrow collimated beam through the process
vessel
• Shields the radiation elsewhere
• The model chosen for each system depends on the source capsule inside
and the radiation specifications
• Its shutter completely shields the radiation (source off) or lets it pass
through the process (source on) (if applicable)
Detector assembly
• Mounts opposite the source holder.
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