2011 Particle Accelerator Conference - List of Authors (Davidson, T.L.)

Paper	Title	Page
MOP300	The Spallation Neutron Source Eight-Channel Pulsed Power Meter	684
	M.T. Crofford, X. Geng, T.W. Hardek ORNL, Oak Ridge, Tennessee, USA T.L. Davidson ORNL RAD, Oak Ridge, Tennessee, USA
	The Spallation Neutron Source (SNS) Low Level Radio Frequency (LLRF) Control System currently utilizes the High-Power Protection Module (HPM) to monitor RF power levels, arc faults, and associated signals for the protection of the RF systems and accelerating cavities. The HPM is limited to seven RF channels for monitoring signals which in some instances leaves some signals of interest unmonitored. In addition, the HPM does not support monitoring of RF frequencies below 100 MHz which makes it unusable for our Ring and Ion Source systems that operate at 1 and 2 MHz respectively. To alleviate this problem, we have developed a microprocessor based eight channel pulsed RF power meter that allows us to monitor additional channels between the frequency range of 1 MHz to 2.5 GHz. This meter has been field tested in several locations with good results and plans are in place for a wider deployment.

Paper

Title

Page

The Spallation Neutron Source Eight-Channel Pulsed Power Meter

684

M.T. Crofford, X. Geng, T.W. Hardek
ORNL, Oak Ridge, Tennessee, USA
T.L. Davidson
ORNL RAD, Oak Ridge, Tennessee, USA

The Spallation Neutron Source (SNS) Low Level Radio Frequency (LLRF) Control System currently utilizes the High-Power Protection Module (HPM) to monitor RF power levels, arc faults, and associated signals for the protection of the RF systems and accelerating cavities. The HPM is limited to seven RF channels for monitoring signals which in some instances leaves some signals of interest unmonitored. In addition, the HPM does not support monitoring of RF frequencies below 100 MHz which makes it unusable for our Ring and Ion Source systems that operate at 1 and 2 MHz respectively. To alleviate this problem, we have developed a microprocessor based eight channel pulsed RF power meter that allows us to monitor additional channels between the frequency range of 1 MHz to 2.5 GHz. This meter has been field tested in several locations with good results and plans are in place for a wider deployment.