PCaPAC2012 - List of Keywords (high-voltage)

Paper	Title	Other Keywords	Page
THPD03	PLC Controlled Search & Secure Safety Interlock System for Accelerator	PLC, controls, radiation, electron	142
	V. Sharma, S. Acharya, S. Gond, K.C. Mittal, R.N. Rajan BARC, Mumbai, India
	PLC based search and scram system is designed and commissioned to ensure the accelerator cell being free from any human occupancy before we start the accelerator. Search and Scram units which are controlled by PLC have been installed at different places inside the cell area. The operator of the accelerator has to clear all the units by pressing the secure button. Clearing each of the unit and pressing the button ensures that there is nobody left inside the cell after all the units are cleared. If someone remains trapped inside cell even after search and secure operation successfully performed, he can press any emergency button located on each of the Scram unit to switch off the accelerator immediately. The operation is time limited so if the operator fails to do the search operation in time, the entire system will get tripped and will require to the operator to do the entire operation again. This system generates HV ON enable signal. If any of the door is opened or Scram is pressed the HV supply switches off and radiation ceases off immediately. This system has the merit that it offers timing and sequence flexibility but retains the safety merit of hard wired circuit.
	Poster THPD03 [0.571 MB]

THPD15	Multichannel High Voltage Power Supply Controls Solution Using Compact Distributed Ethernet Based Boards and Qt Based GUI	controls, power-supply, GUI, neutron	169
	J. Antony, R. Kumar IUAC, New Delhi, India
	Compact low cost Ethernet based remote controller boards have been developed and tested for distributed control of many DC-DC high voltage power supplies(0-2000V) to be used in large Neutron detector array at IUAC. The boards can be distributed over LAN using network switches for interconnect. Each board has its own unique MAC and IP address for independent read write operations. A 24 channel power supply system, each channel having a compact two layer board with the DC-DC HV converter, mounted on top layer, has been built and tested successfully to power detectors. A user friendly GUI has been developed using Qt as the preferred language which is compatible to both Linux and Windows. The advantage of such a system is that, it is easily expandable to a large number of power supplies, low cost, globally accessible, multiple users in a network can set or read any power supply value through a software control panel developed either as a simple browser based HTTP client or versatile HLL interface using LabVIEW, C++ etc. and OS independent.

THPD19	Drive System Control for Kolkata Superconducting Cyclotron Extraction System	extraction, controls, cyclotron, feedback	181
	T. Bhattacharyya, S. Bhattacharya, T. Das, C. Nandi, G.P. Pal VECC, Kolkata, India
	The K500 Superconducting Cyclotron at VECC, Kolkata uses two electrostatic deflectors, eight passive magnetic channels, one active magnetic channel and two compensating bars as its extraction elements. Except the active magnetic channel, all the other elements can be moved radially, typically by ±6 mm around a centre position. This maneuverability is due to the fact that not all the ions, spanning the operating region of the cyclotron, will have the same optimum beam extraction radius. At the end of the beam extraction channel, the beam is shaped and aligned by a pair of water cooled slit. The slit movement is pneumatically controlled as it has to be operated in high magnetic field. The computer controlled drive system can move the elements precisely. The paper will describe the drive system and its control mechanism.
	Poster THPD19 [0.933 MB]

THPD21	Testing of Inductive Output Tube based RF Amplifier for 650 MHz SRF Cavities	controls, PLC, EPICS, interlocks	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]

THPD28	A Distributed CAN Bus Based Embedded Control System for 750 keV DC Accelerator	controls, LabView, monitoring, power-supply	197
	A. Kasliwal, T.G. Pandit RRCAT, Indore (M.P.), India
	Funding: RRCAT, Indore, Department of Atomic Energy, Government of India This paper describes a distributed embedded system that uses a high performance mixed signal controller C8051F040 for its DAQ nodes and is based on CAN bus protocol for remote monitoring and controlling of various subsystems of 750 keV DC accelerator based irradiation facility at RRCAT, Indore. A PC with integrated PCI CAN card communicates with intelligent DAQ nodes over CAN bus and each node is interfaced with a subsystem. An opto- isolated SN65HVD230 CAN driver is interfaced between each node and physical bus. Remote frames and message prioritizing are used for efficient control. The PC application is developed using LabVIEW 8.6. The proposed system is more reliable and noise immune as compared to previously [1] used systems that initially used a centralized system based on C8051 controller. This was then upgraded [2] to a distributed system that used micro-controller AduC812 and communicated over RS485 link. The new system has been integrated and tested satisfactorily for its designed performance with test jigs that simulated the actual subsystems with a bus length of 75 meters. First the complete scheme of the system is presented, then the hardware and software designs are discussed. [1] A. Kasliwal, "PC based control system for 750 KV DC accelerator", InPAC-2003, CAT, Indore, India [2] A. Kasliwal, "Upgradation of PC based control system for 750 keV DC accelerator", InPAC-2005, VECC, Kolkata, India

THPD30	High Voltage Controller System for Spectroscopy Diagnostics of SST-1	controls, GUI, diagnostics, plasma	200
	H.D. Mandaliya, P.V. Edappala, R. Jha, R. Rajpal, M. Shah IPR, Bhat, Gandhinagar, India
	We have developed special instrumentation for spectroscopy diagnostics of the SST-1 Tokamak. Light output in the visible spectrum is guided through fiber optics from the Tokamak ports to the diagnostics Hall, where photo multipliers tubes and other instrumentation electronics are kept. High Voltage(0 - 1500 V) bias generation electronics is required to bias these PMTs. Total 14 PMTs to be biased for overall requirements of the diagnostics. We have developed modular electronics for HV bias generation, which consist of one controller and seven HV modules. We have designed and developed FPGA based controller card which controls seven HV modules. The Slot-0 card is having Spartan 3E FPGA and Standalone Controller Area Networking (CAN) controller. 32-bit RISC processor Microblaze has been deployed into the FPGA. We have used Hitek make HV supply modules which is programmable. In the HV modules, Analog Device Inc. make iCoupler, digital isolators are used to break the ground loops and to avoid ground-lifting problem. Various features like Manual mode/Remote mode operation, HV ON/OFF, HV Value setting through remote GUI have been developed on LabVIEW software.

Paper

Title

Other Keywords

Page

THPD03

PLC Controlled Search & Secure Safety Interlock System for Accelerator

PLC, controls, radiation, electron

142

V. Sharma, S. Acharya, S. Gond, K.C. Mittal, R.N. Rajan
BARC, Mumbai, India

PLC based search and scram system is designed and commissioned to ensure the accelerator cell being free from any human occupancy before we start the accelerator. Search and Scram units which are controlled by PLC have been installed at different places inside the cell area. The operator of the accelerator has to clear all the units by pressing the secure button. Clearing each of the unit and pressing the button ensures that there is nobody left inside the cell after all the units are cleared. If someone remains trapped inside cell even after search and secure operation successfully performed, he can press any emergency button located on each of the Scram unit to switch off the accelerator immediately. The operation is time limited so if the operator fails to do the search operation in time, the entire system will get tripped and will require to the operator to do the entire operation again. This system generates HV ON enable signal. If any of the door is opened or Scram is pressed the HV supply switches off and radiation ceases off immediately. This system has the merit that it offers timing and sequence flexibility but retains the safety merit of hard wired circuit.

Poster THPD03 [0.571 MB]

THPD15

Multichannel High Voltage Power Supply Controls Solution Using Compact Distributed Ethernet Based Boards and Qt Based GUI

controls, power-supply, GUI, neutron

169

J. Antony, R. Kumar
IUAC, New Delhi, India

Compact low cost Ethernet based remote controller boards have been developed and tested for distributed control of many DC-DC high voltage power supplies(0-2000V) to be used in large Neutron detector array at IUAC. The boards can be distributed over LAN using network switches for interconnect. Each board has its own unique MAC and IP address for independent read write operations. A 24 channel power supply system, each channel having a compact two layer board with the DC-DC HV converter, mounted on top layer, has been built and tested successfully to power detectors. A user friendly GUI has been developed using Qt as the preferred language which is compatible to both Linux and Windows. The advantage of such a system is that, it is easily expandable to a large number of power supplies, low cost, globally accessible, multiple users in a network can set or read any power supply value through a software control panel developed either as a simple browser based HTTP client or versatile HLL interface using LabVIEW, C++ etc. and OS independent.

THPD19

Drive System Control for Kolkata Superconducting Cyclotron Extraction System

extraction, controls, cyclotron, feedback

181

T. Bhattacharyya, S. Bhattacharya, T. Das, C. Nandi, G.P. Pal
VECC, Kolkata, India

The K500 Superconducting Cyclotron at VECC, Kolkata uses two electrostatic deflectors, eight passive magnetic channels, one active magnetic channel and two compensating bars as its extraction elements. Except the active magnetic channel, all the other elements can be moved radially, typically by ±6 mm around a centre position. This maneuverability is due to the fact that not all the ions, spanning the operating region of the cyclotron, will have the same optimum beam extraction radius. At the end of the beam extraction channel, the beam is shaped and aligned by a pair of water cooled slit. The slit movement is pneumatically controlled as it has to be operated in high magnetic field. The computer controlled drive system can move the elements precisely. The paper will describe the drive system and its control mechanism.

Poster THPD19 [0.933 MB]

THPD21

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

controls, PLC, EPICS, interlocks

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]

THPD28

A Distributed CAN Bus Based Embedded Control System for 750 keV DC Accelerator

controls, LabView, monitoring, power-supply

197

A. Kasliwal, T.G. Pandit
RRCAT, Indore (M.P.), India

Funding: RRCAT, Indore, Department of Atomic Energy, Government of India
This paper describes a distributed embedded system that uses a high performance mixed signal controller C8051F040 for its DAQ nodes and is based on CAN bus protocol for remote monitoring and controlling of various subsystems of 750 keV DC accelerator based irradiation facility at RRCAT, Indore. A PC with integrated PCI CAN card communicates with intelligent DAQ nodes over CAN bus and each node is interfaced with a subsystem. An opto- isolated SN65HVD230 CAN driver is interfaced between each node and physical bus. Remote frames and message prioritizing are used for efficient control. The PC application is developed using LabVIEW 8.6. The proposed system is more reliable and noise immune as compared to previously [1] used systems that initially used a centralized system based on C8051 controller. This was then upgraded [2] to a distributed system that used micro-controller AduC812 and communicated over RS485 link. The new system has been integrated and tested satisfactorily for its designed performance with test jigs that simulated the actual subsystems with a bus length of 75 meters. First the complete scheme of the system is presented, then the hardware and software designs are discussed.
[1] A. Kasliwal, "PC based control system for 750 KV DC accelerator", InPAC-2003, CAT, Indore, India
[2] A. Kasliwal, "Upgradation of PC based control system for 750 keV DC accelerator", InPAC-2005, VECC, Kolkata, India

THPD30

High Voltage Controller System for Spectroscopy Diagnostics of SST-1

controls, GUI, diagnostics, plasma

200

H.D. Mandaliya, P.V. Edappala, R. Jha, R. Rajpal, M. Shah
IPR, Bhat, Gandhinagar, India

We have developed special instrumentation for spectroscopy diagnostics of the SST-1 Tokamak. Light output in the visible spectrum is guided through fiber optics from the Tokamak ports to the diagnostics Hall, where photo multipliers tubes and other instrumentation electronics are kept. High Voltage(0 - 1500 V) bias generation electronics is required to bias these PMTs. Total 14 PMTs to be biased for overall requirements of the diagnostics. We have developed modular electronics for HV bias generation, which consist of one controller and seven HV modules. We have designed and developed FPGA based controller card which controls seven HV modules. The Slot-0 card is having Spartan 3E FPGA and Standalone Controller Area Networking (CAN) controller. 32-bit RISC processor Microblaze has been deployed into the FPGA. We have used Hitek make HV supply modules which is programmable. In the HV modules, Analog Device Inc. make iCoupler, digital isolators are used to break the ground loops and to avoid ground-lifting problem. Various features like Manual mode/Remote mode operation, HV ON/OFF, HV Value setting through remote GUI have been developed on LabVIEW software.