• V MANDLOI

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    • Development of a long pulsed RF test stand and its applications for performance studies of 1 MW CW klystron

      PURUSHOTTAM SHRIVASTAVA T REGHU J MULCHANDANI V MANDLOI P MOHANIA A MAHAWAR HARGOVIND SINGH VIKAS RAJPUT

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      Research and development activities of high power microwave sources for powering RF cavities of Indian Spallation Neutron Source and Accelerator Driven Subcritical Systems are underway at RRCAT. Front end accelerating structures such as Radio Frequency Quadrupoles and Drift Tube Linac demand pulsed RFpower up to 1 MW. A 1 MW pulsed RF system based on TH 2089 klystron amplifier at 352.2 MHz with pulse width capability up to 1.5 ms has been developed and tested. A compact 100 kV, 20 A converter type modulatorwith pulse width capability up to 1.6 ms has been used to energize the klystron of RF test stand. The performance of the klystron in pulsed mode operation has been studied and presented. The variation in the RF output power was measured and it is within ±0.75%. The phase variation of RF output power within the pulse and the pulse to pulse is less than ±2.5°.

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