LLRFPreFE is an intermediate device responsible to condition the RF signal from RFPatch to LLRFDwConv.
LLRF Front-end deals with numerous RF signals from different components of the RF plant that has different levels. Therefore, LLRFPreFE adapts RF signal levels to avoid the damage of the front-end by limiting input power through fixed attenuators. Some output ports are protected by a circulator to avoid damage from the reflected power. The simplified diagram with the main components and ports is shown in Fig. 1.
In addition, it has BNC connectors that provide a DC signal from an RF diode that is connected to one of the RF channels for general purpose. For example, it can be connected to an Interlock System for MPS (Machine Protection System). Monitoring ports are provided and they can be connected, for instance, to the RFCalSys for LLRF signals calibration.
The schematic, bill of materials, and all other files related to this crate can be found at:
Devices in use
|Device #||Version||Device Name||Location|
|001||V1I2||RA-RaBO01:RF-LLRFPreFE-1||Booster LLRF Rack|
|002||V1I2||RA-RaBO01:RF-LLRFPreFE-2||Booster LLRF Rack|
|003||V1I2||RA-RaSIA01:RF-LLRFPreFE-1||Storage Ring A LLRF Rack|
|004||V1I2||RA-RaSIA01:RF-LLRFPreFE-2||Storage Ring A LLRF Rack|
There are no PVs associated with this device.