Speaker
Description
Radiofrequency (RF) power for the Argonne Advanced Photon Source (APS) storage ring (SR) and Booster cavities is currently supplied by multiple klystrons. APS is in the process of transitioning to 160 kW solid state amplifier (SSA) system per SR cavity. Several SSA systems have already been delivered, and site acceptance testing (SAT) has been completed on four units. New 200 kW circulators have also been tested. A typical SAT waveguide setup is shown. Improvements have been implemented, including modifications to RF cable lengths to increase access clearance and reduce environmental power dissipation. During the initial tests, 60 Hz noise was observed on the monitoring spectrum. This issue was investigated, and a successful mitigation solution has been implemented. To minimize the risks and to validate both the new hardware and control software, one SSA system will be placed into operational service around January 2026. For this deployment, the SR RF system will be in a hybrid configuration, with the SSA powering one cavity while the remaining eleven cavities continuously being powered by klystrons. Several intermediate interfaces are required to bridge the existing infrastructure with the new SSA system. After the hybrid operation, RF power for the remaining three cavities in the same sector will be transitioned to SSAs too. The remaining two SR sectors, are planned for SSA conversion within the following few years, completing the multi-year APS SR RF system upgrade.
Funding Agency
U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357.
| In which format do you inted to submit your paper? | Word |
|---|