| Paper | Title | Page |
|---|---|---|
WEYB4 |
Low Energy Electron Linacs for Homeland Security | |
|
||
| This presentation should provide an overview of the latest developments on the technologies of low energy electron linacs and their applications at cargo inspection, irradiation for quarantine, and so on. | ||
|
Slides WEYB4 [9.885 MB] | |
| WEPAC01 | Time-Resolved Temperature Mapping System for the APS Deflecting Cavity | 784 |
|
||
| Time-resolved temperature mapping of a superconducting cavity can give valuable information on the limiting process of the cavity performance. A fast temperature mapping system has been developed at Argonne National Laboratory (ANL) for a superconducting deflecting cavity test. The time resolution of the temperature mapping could be up to 50 us. Not only the spatial distribution of surface heating but also the thermodynamics can be recorded, which helps to understand the limitation mechanism. This new temperature mapping system has helped us to understand the rf performance limitations during the cavity vertical tests. Based on the findings from the temperature mapping, proper cavity treatment has been applied and the cavity performances have been improved. | ||
| WEPAC02 | Mode Damping Measurement for the APS Deflecting Cavity | 787 |
|
||
| The Advanced Photon Source has considered using a deflecting-cavity-based scheme to produce short pulse xrays. A deflecting cavity design has been completed. To verify the simulation result on this cavity, a copper prototype of the design has been fabricated for bench measurement. In this paper, we report our measurement results on this cavity. All the cavity modes below 5 GHz were identified by comparing the field distributions with calculations along different beam paths. After adding the damper, the measured Qexts of those modes were consistent with calculated values, which demonstrated that the cavity damping scheme was sufficient to reduce the wake impedances well below the safety thresholds. | ||
| WEPAC01 | Time-Resolved Temperature Mapping System for the APS Deflecting Cavity | 784 |
|
||
| Time-resolved temperature mapping of a superconducting cavity can give valuable information on the limiting process of the cavity performance. A fast temperature mapping system has been developed at Argonne National Laboratory (ANL) for a superconducting deflecting cavity test. The time resolution of the temperature mapping could be up to 50 us. Not only the spatial distribution of surface heating but also the thermodynamics can be recorded, which helps to understand the limitation mechanism. This new temperature mapping system has helped us to understand the rf performance limitations during the cavity vertical tests. Based on the findings from the temperature mapping, proper cavity treatment has been applied and the cavity performances have been improved. | ||
| WEPAC02 | Mode Damping Measurement for the APS Deflecting Cavity | 787 |
|
||
| The Advanced Photon Source has considered using a deflecting-cavity-based scheme to produce short pulse xrays. A deflecting cavity design has been completed. To verify the simulation result on this cavity, a copper prototype of the design has been fabricated for bench measurement. In this paper, we report our measurement results on this cavity. All the cavity modes below 5 GHz were identified by comparing the field distributions with calculations along different beam paths. After adding the damper, the measured Qexts of those modes were consistent with calculated values, which demonstrated that the cavity damping scheme was sufficient to reduce the wake impedances well below the safety thresholds. | ||