An informal collaboration between the scientists at Argonne,
KEK, and ISIS was initiated in 1996 on a prototype 2nd harmonic, low-impedance
amplifier system for test on the ISIS synchrotron. The intent was to pool
limited R&D funds to pursue a mutually beneficial study of interest
to all three laboratories. The prototype low-output-impedance system was
built and tested in Japan during the period from October 2000 to July 2002.
The KEK laboratory provided the amplifier and cavity supply, the ISIS laboratory
provided the cavity, and Argonne National Laboratory provided the power
supply for the final tube. Preliminary tests of the fully assembled system
have been successfully completed. A plan for follow on installation and tests
at ISIS is under development.