Author: Jobs, M.
Paper Title Page
TUPHA073 RF Leakage Detector System 580
  • M. Jobs, K. Fransson, K.J. Gajewski
    Uppsala University, Uppsala, Sweden
  FREIA Laboratory is a new facility for developing and testing instrumentation for particle accelerators. There are two pulsed 400 kW 352 MHz RF sources, presently used for testing superconducting RF cavities and there is a need to monitor the electromagnetic field in the experimental hall. The RF leakage detector system consists of number of physically identical nodes with one of them configured as a master and the rest as slaves. Each node supports 3 separate RF measurement channels with a frequency span of 100 kHz to 1 GHz. A desired frequency band is selected using a front-end band-pass filter. The sensitivity of the sensor is -34 dBm and the dynamic range 48 dB. The slaves are battery powered for easy installation. Special care has been taken to minimize the power consumption resulting in battery life to be 4-13 months using 3xAAA batteries. The footprint of the module is 60x100x40 mm. The communication between the master and the slaves uses a Wireless Link operating at the 868 MHz ISM band. The system is controlled by EPICS using the StreamDevice driver. The master RF module is connected via an RS-232 line and a MOXA NPort server to the control system network.  
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