PCaPAC2012 - List of Authors (Mandal, A.)

Paper

Title

Page

Testing of Inductive Output Tube based RF Amplifier for 650 MHz SRF Cavities

187

S. Ghosh, A. Mandal, U. Panda, S. Seth, S.S. Som
VECC, Kolkata, India

A 650 MHz IOT based RF amplifier has been developed in VECC. It can be used to power several cavity modules in high energy high current proton linear accelerator to be built for ADSS programme in India and in Project-X at Fermilab, USA. The IOT based amplifier requires different powers supplies, water cooling and forced air cooling for its operation. A Programmable Logic Controller (PLC) based interlocks has been incorporated to take care of systematic on/off of the power supplies and driver amplifier, water flow, air flow and other interlocks for the safe operation of the RF System. In addition to that EPICS based RF operating console and data logging/monitoring system has been added.

Poster THPD21 [0.370 MB]

THPD50

FPGA Based Amplitude Control System for Accelerating Cavities

239

M.S. Dey, S. Ghosh, A. Mandal, S. Seth, A. Singh, S.S. Som
VECC, Kolkata, India

The FPGA (Field Programmable Gate Array) based digital controller has been implemented for Low level RF voltage control of a 650 MHz cavity. The flexibility of implementing any appropriate control strategy and to have a compact single board solution, FPGA is chosen. The superconducting Cavity is designed to be operated at 650 MHz and 30 kW, CW mode. The voltage from pick-up coil has been fed to the controller after down conversion. The signal is digitized using high speed ADCs. The controller has been tested with different set points and gain parameters from a software connected to the board with serial interface. The FPGA signal processing has been verified according to the required strategy of the reference controller. Some experimental results have been presented for different cavity operational conditions.

Poster THPD50 [0.613 MB]

Paper	Title	Page
THPD21	Testing of Inductive Output Tube based RF Amplifier for 650 MHz SRF Cavities	187
	S. Ghosh, A. Mandal, U. Panda, S. Seth, S.S. Som VECC, Kolkata, India
	A 650 MHz IOT based RF amplifier has been developed in VECC. It can be used to power several cavity modules in high energy high current proton linear accelerator to be built for ADSS programme in India and in Project-X at Fermilab, USA. The IOT based amplifier requires different powers supplies, water cooling and forced air cooling for its operation. A Programmable Logic Controller (PLC) based interlocks has been incorporated to take care of systematic on/off of the power supplies and driver amplifier, water flow, air flow and other interlocks for the safe operation of the RF System. In addition to that EPICS based RF operating console and data logging/monitoring system has been added.
	Poster THPD21 [0.370 MB]

THPD50	FPGA Based Amplitude Control System for Accelerating Cavities	239
	M.S. Dey, S. Ghosh, A. Mandal, S. Seth, A. Singh, S.S. Som VECC, Kolkata, India
	The FPGA (Field Programmable Gate Array) based digital controller has been implemented for Low level RF voltage control of a 650 MHz cavity. The flexibility of implementing any appropriate control strategy and to have a compact single board solution, FPGA is chosen. The superconducting Cavity is designed to be operated at 650 MHz and 30 kW, CW mode. The voltage from pick-up coil has been fed to the controller after down conversion. The signal is digitized using high speed ADCs. The controller has been tested with different set points and gain parameters from a software connected to the board with serial interface. The FPGA signal processing has been verified according to the required strategy of the reference controller. Some experimental results have been presented for different cavity operational conditions.
	Poster THPD50 [0.613 MB]