The IRB vacuum chamber bake out system comprises a CF flange-mounted IR quartz lamp and a control which provides power to the lamp. It can be used in place of heater tapes and ovens on high vacuum and ultra-high vacuum chambers.
The IR lamps are extremely efficient and provide short wave IR which heats the chamber walls that are in a direct line of sight with the lamp. However, heat will also radiate along the chamber walls as well, often resulting in an effective bake out of the vacuum chamber without the need for heating tape or bake out blankets.
For more information on water vapor and it's effects on vacuum chambers, please see this collection of articles (compiled by Normandale Community College) by the late Phil Danielson (formally of The Vacuum Lab).