For personal protection purposes,the slow control group designed a radiation dose monitor system and a gate controller with the radiation protection group in HIRFL-CSR.These two works are listed one by one in this art...For personal protection purposes,the slow control group designed a radiation dose monitor system and a gate controller with the radiation protection group in HIRFL-CSR.These two works are listed one by one in this article.1.The radiation dose monitor system For radiation protection purposes,the environment radiation dose monitoring is important.According to the characteristics of the detector,self-designed hardware module and switch have been used to build the hardware platform and the whole monitoring system structure is established base on field bus and Ethernet technology.展开更多
In 2015, a 14-PIN photomultiplier tube (PMT) high voltage power supply was designed. This product consists of high voltage power supply, small signal processing and high voltage monitoring modules. The utility model a...In 2015, a 14-PIN photomultiplier tube (PMT) high voltage power supply was designed. This product consists of high voltage power supply, small signal processing and high voltage monitoring modules. The utility model adopts 3.75 V DC power input, tiny size, low power-consumption and good portability, extremely well meeting the requirements of the power supply for the PMT in the mobile station with a car battery.展开更多
The kicker system in the Heavy Ion Research Facility in Lanzhou (HIRFL) plays an important role in beam extraction and injection between two cooling storage rings (CSRs). The old kicker control system which has been o...The kicker system in the Heavy Ion Research Facility in Lanzhou (HIRFL) plays an important role in beam extraction and injection between two cooling storage rings (CSRs). The old kicker control system which has been operated over 5 years cannot satisfy the requirements of current special physics experiments. The main reason is the 5 ns time precision restricts the improvement of the precision for the phase detection of the beam bunches.展开更多
The photomultiplier tube is a vacuum electronic device widely used in spectrum analysis instrument. And itplays an important role in nuclear experiments. However, the base for the tube on the market can cost up to sev...The photomultiplier tube is a vacuum electronic device widely used in spectrum analysis instrument. And itplays an important role in nuclear experiments. However, the base for the tube on the market can cost up to severalhundreds of dollars. Thus there is a need to develop a practical and economical PMT-base in our laboratory.We designed and tested a construction of a photomultiplier base used in a Cosmic Ray Detector. This PMT-baseused the so-called Cockcroft-Walton voltage multiplier circuit[1] to generate a graded series of voltages with linearadjustment from -100 to -1 200 V while the power consumption is low(50 mA current and 0.5 W power requiredunder a 12 V DC supply). Meanwhile other unique features such as simple structure, low cost, less heat dissipation,and safety are emphasized. The test results of the base with a negative high voltage are presented.展开更多
In order to improve the stability of TR5 experimental terminal control system,a new control system was design and realized in 2018 both in hardware and software level.PLC(Programmable Logic Controller)is used in hardw...In order to improve the stability of TR5 experimental terminal control system,a new control system was design and realized in 2018 both in hardware and software level.PLC(Programmable Logic Controller)is used in hardware instead of assembled PC based plug-in board.In software,several sets of control software with independent functions are integrated into one software developed by C++.After the reform of the control system,the upgraded control system has been running steadily for several months.展开更多
A FPGA based time-to-digital converter(TDC)with high precision was designed and realized.A technique that combines coarse time counting and fine time measurement was adopted to achieve a large time measurement range a...A FPGA based time-to-digital converter(TDC)with high precision was designed and realized.A technique that combines coarse time counting and fine time measurement was adopted to achieve a large time measurement range and a fine time resolution.The method of“wave-union”was used in the time interpolation to improve the time resolution.The performance of TDC was tested under lab conditions and the results show that the time resolution of TDC is less than 40 ps.It has been applied for pulse width(time-over-threshold,TOT)measurement.展开更多
To establish the sputter ion pump remote control system for TR5 and TR6 of HIRFL(Heavy Ion Research Facility in Lanzhou),EPICS(Experimental Physics And Industrial Control System)is adopted to development new control s...To establish the sputter ion pump remote control system for TR5 and TR6 of HIRFL(Heavy Ion Research Facility in Lanzhou),EPICS(Experimental Physics And Industrial Control System)is adopted to development new control system.Beckhoff PLC and self-designed hardware module have been used to build the hardware platform and the whole system structure is established based on field bus and EtherCAT(Ethernet for Control Automation Technology)technology.EtherCAT is an ideal Ethernet solution for industrial automation,characterized by outstanding performance and particularly simple handling.In the realization process of the system,IOC record device support and PV definition are achieved.At the same time,we have developed a client application in the CSS environment.In this sputter ion pump control system,we realized the basic interlocking protection function in both of hardware and software.The photo of hardware module is shown in Fig.1.The GUI interface is shown in Fig.2.The control system has being stably run since installed in Aug.2017.展开更多
We have designed and developed one small,low power consumption,portable and fully functional secondary charged particle detector.This detector consists of sensitive detection body,photomultiplier tube,high voltage pow...We have designed and developed one small,low power consumption,portable and fully functional secondary charged particle detector.This detector consists of sensitive detection body,photomultiplier tube,high voltage power supply module,signal conditioning and data processing circuit,and can work at outdoor powered by a solar battery or vehicle power supply when monitoring the cosmic ray flux at different areas via a network for a long time,and make records of environmental parameters,such as air temperature,humidity and air pressure in these areas as large data sample.This large data sample shall be used in a further study of the correlation between cosmic rays and climate change[1],biodiversity and genetic variations of animals and plants.展开更多
In order to meet the requirements of collection the various types of electronic data which has signals with relatively slowly speed in the site of HIRFL in IMP,a new hardware controller which is combined with digital ...In order to meet the requirements of collection the various types of electronic data which has signals with relatively slowly speed in the site of HIRFL in IMP,a new hardware controller which is combined with digital inputs outputs(DIOs)and analog inputs outputs(AIOs)was designed.Fig.1 shows the hardware structure.As shown in Fig.1,the board is consisted of different functional blocks.展开更多
文摘For personal protection purposes,the slow control group designed a radiation dose monitor system and a gate controller with the radiation protection group in HIRFL-CSR.These two works are listed one by one in this article.1.The radiation dose monitor system For radiation protection purposes,the environment radiation dose monitoring is important.According to the characteristics of the detector,self-designed hardware module and switch have been used to build the hardware platform and the whole monitoring system structure is established base on field bus and Ethernet technology.
文摘In 2015, a 14-PIN photomultiplier tube (PMT) high voltage power supply was designed. This product consists of high voltage power supply, small signal processing and high voltage monitoring modules. The utility model adopts 3.75 V DC power input, tiny size, low power-consumption and good portability, extremely well meeting the requirements of the power supply for the PMT in the mobile station with a car battery.
文摘The kicker system in the Heavy Ion Research Facility in Lanzhou (HIRFL) plays an important role in beam extraction and injection between two cooling storage rings (CSRs). The old kicker control system which has been operated over 5 years cannot satisfy the requirements of current special physics experiments. The main reason is the 5 ns time precision restricts the improvement of the precision for the phase detection of the beam bunches.
文摘The photomultiplier tube is a vacuum electronic device widely used in spectrum analysis instrument. And itplays an important role in nuclear experiments. However, the base for the tube on the market can cost up to severalhundreds of dollars. Thus there is a need to develop a practical and economical PMT-base in our laboratory.We designed and tested a construction of a photomultiplier base used in a Cosmic Ray Detector. This PMT-baseused the so-called Cockcroft-Walton voltage multiplier circuit[1] to generate a graded series of voltages with linearadjustment from -100 to -1 200 V while the power consumption is low(50 mA current and 0.5 W power requiredunder a 12 V DC supply). Meanwhile other unique features such as simple structure, low cost, less heat dissipation,and safety are emphasized. The test results of the base with a negative high voltage are presented.
文摘In order to improve the stability of TR5 experimental terminal control system,a new control system was design and realized in 2018 both in hardware and software level.PLC(Programmable Logic Controller)is used in hardware instead of assembled PC based plug-in board.In software,several sets of control software with independent functions are integrated into one software developed by C++.After the reform of the control system,the upgraded control system has been running steadily for several months.
文摘A FPGA based time-to-digital converter(TDC)with high precision was designed and realized.A technique that combines coarse time counting and fine time measurement was adopted to achieve a large time measurement range and a fine time resolution.The method of“wave-union”was used in the time interpolation to improve the time resolution.The performance of TDC was tested under lab conditions and the results show that the time resolution of TDC is less than 40 ps.It has been applied for pulse width(time-over-threshold,TOT)measurement.
文摘To establish the sputter ion pump remote control system for TR5 and TR6 of HIRFL(Heavy Ion Research Facility in Lanzhou),EPICS(Experimental Physics And Industrial Control System)is adopted to development new control system.Beckhoff PLC and self-designed hardware module have been used to build the hardware platform and the whole system structure is established based on field bus and EtherCAT(Ethernet for Control Automation Technology)technology.EtherCAT is an ideal Ethernet solution for industrial automation,characterized by outstanding performance and particularly simple handling.In the realization process of the system,IOC record device support and PV definition are achieved.At the same time,we have developed a client application in the CSS environment.In this sputter ion pump control system,we realized the basic interlocking protection function in both of hardware and software.The photo of hardware module is shown in Fig.1.The GUI interface is shown in Fig.2.The control system has being stably run since installed in Aug.2017.
文摘We have designed and developed one small,low power consumption,portable and fully functional secondary charged particle detector.This detector consists of sensitive detection body,photomultiplier tube,high voltage power supply module,signal conditioning and data processing circuit,and can work at outdoor powered by a solar battery or vehicle power supply when monitoring the cosmic ray flux at different areas via a network for a long time,and make records of environmental parameters,such as air temperature,humidity and air pressure in these areas as large data sample.This large data sample shall be used in a further study of the correlation between cosmic rays and climate change[1],biodiversity and genetic variations of animals and plants.
文摘In order to meet the requirements of collection the various types of electronic data which has signals with relatively slowly speed in the site of HIRFL in IMP,a new hardware controller which is combined with digital inputs outputs(DIOs)and analog inputs outputs(AIOs)was designed.Fig.1 shows the hardware structure.As shown in Fig.1,the board is consisted of different functional blocks.
