Grating ruler is one of the most important devices in control system of micro beam. The faraday position must be acquired to con rm the beam position. How to acquire the position data accurately and quickly becomes si...Grating ruler is one of the most important devices in control system of micro beam. The faraday position must be acquired to con rm the beam position. How to acquire the position data accurately and quickly becomes signi cant grating ruler and DAQ board is made by an electronic company which is in Zhuhai. The interface of the board is RJ45 and the protocol is UDP. Grating Ruler and DAQ board is shown in Fig. 1.展开更多
The nuclear astrophysics experiments terminal of RIBLL1 (Radioactive Ion Beam Line in Lanzhou) is composed of two slide rails and a four-knife precision slit structure. Both of them are placed in a terminal chamber as...The nuclear astrophysics experiments terminal of RIBLL1 (Radioactive Ion Beam Line in Lanzhou) is composed of two slide rails and a four-knife precision slit structure. Both of them are placed in a terminal chamber as shown in Fig. 1. During experiments, PPAC and experiment target are placed on two slide rails respectively. The width of four-knife slit is required to be adjusted during experiments. Also, in order to get results of different positions in chamber space, the position of PPAC and target must be able to be adjusted precisely in real time.展开更多
The magnetic field created by dipolar magnet is very important for the quality of beam in CSRe. It is required that the magnetic fields fluctuation ranges less than 0.3 10??4 T. Unfortunately, results show that the m...The magnetic field created by dipolar magnet is very important for the quality of beam in CSRe. It is required that the magnetic fields fluctuation ranges less than 0.3 10??4 T. Unfortunately, results show that the magnetic fields fluctuate more widely than limited. Reasons for the fluctuation are complex, transfer drift over temperature,zero shift, and output stability of power supply can all lead to magnetic field fluctuation. It is impossible to eliminate the effects of these factors. One way to solve the problem is to make current compensation.展开更多
The CSRe control system is based on EPICS. There are many sub systems such as power supply control system, vacuum monitor system, and so on. The structure of CSRe control system is shown in Fig. 1.Almost all of the po...The CSRe control system is based on EPICS. There are many sub systems such as power supply control system, vacuum monitor system, and so on. The structure of CSRe control system is shown in Fig. 1.Almost all of the power supply in the system uses digital power supply. So control interface between IOC and power supply is Ethernet interface.展开更多
The architecture of SSC-Linac vacuum control system is based on EPICS. The interlock of vacuum devices inSSC-Linac was introduced. We use C-RIO as an EPICS IOC to acquire data from vacuum gauges and controlvacuum valv...The architecture of SSC-Linac vacuum control system is based on EPICS. The interlock of vacuum devices inSSC-Linac was introduced. We use C-RIO as an EPICS IOC to acquire data from vacuum gauges and controlvacuum valves. The software is programmed by Labview.The interlock of vacuum devices is very important for the whole system. If the pressure of the vacuum gauge islarger than the value we preset, the vacuum valve will be pushed in automatically and it can't be operated. If thepressure is smaller than the present value, we can operate the vacuum valve to be in or to be out[1].展开更多
The output stability of power supply for Heavy Ion Research Facility of Lanzhou (HIRFL) is signicant. Powersupply provides currents to magnets which produce the magnetic eld to constraint particles. So the output stab...The output stability of power supply for Heavy Ion Research Facility of Lanzhou (HIRFL) is signicant. Powersupply provides currents to magnets which produce the magnetic eld to constraint particles. So the output stabilityof power supply has a great signicance to the quality of beams. In order to test the stability of power supply, weuse a Fluke 8846A digit precision multimeter based on LabView platform of National Instrument Corporation.Remote operation of 8846A Digital Multimeter from a host, that is a terminal, controller, PC, or computer, isaccomplished by sending commands to it through one of its remote interfaces. The Multimeter is controlled remotelyusing Standard Commands for Programmable Instruments (SCPI), Fluke 45 or Fluke 8842A (8840A and 8842A)commands. The meter can be remotely controlled through the LAN port on the Meter's rear panel[1] We can sendSCPI commands to the Meter using network communicating controls provided by LabView[2]. This program couldbe used to test output stability of power supply of HIRFL.展开更多
Design and development of the beam instruments for the HIAF project.By the end of 2022,we have completed the design and beam tests of almost all types of beam instruments for HIAF,and most of the beam diagnostics indu...Design and development of the beam instruments for the HIAF project.By the end of 2022,we have completed the design and beam tests of almost all types of beam instruments for HIAF,and most of the beam diagnostics induments for HIAF iLinac,booster ring(BRing)and HFRS are entering the batch fabrication stage.Most of the key detector models have already been tested with beam at IMP,for example the wall current monitor,the diagonal-cut type beam position monitor for BRing,the strip-line type beam position monitor for HFRS,the beam loss monitor and so on,which are proved to meet our project requirements.展开更多
文摘Grating ruler is one of the most important devices in control system of micro beam. The faraday position must be acquired to con rm the beam position. How to acquire the position data accurately and quickly becomes signi cant grating ruler and DAQ board is made by an electronic company which is in Zhuhai. The interface of the board is RJ45 and the protocol is UDP. Grating Ruler and DAQ board is shown in Fig. 1.
文摘The nuclear astrophysics experiments terminal of RIBLL1 (Radioactive Ion Beam Line in Lanzhou) is composed of two slide rails and a four-knife precision slit structure. Both of them are placed in a terminal chamber as shown in Fig. 1. During experiments, PPAC and experiment target are placed on two slide rails respectively. The width of four-knife slit is required to be adjusted during experiments. Also, in order to get results of different positions in chamber space, the position of PPAC and target must be able to be adjusted precisely in real time.
文摘The magnetic field created by dipolar magnet is very important for the quality of beam in CSRe. It is required that the magnetic fields fluctuation ranges less than 0.3 10??4 T. Unfortunately, results show that the magnetic fields fluctuate more widely than limited. Reasons for the fluctuation are complex, transfer drift over temperature,zero shift, and output stability of power supply can all lead to magnetic field fluctuation. It is impossible to eliminate the effects of these factors. One way to solve the problem is to make current compensation.
文摘The CSRe control system is based on EPICS. There are many sub systems such as power supply control system, vacuum monitor system, and so on. The structure of CSRe control system is shown in Fig. 1.Almost all of the power supply in the system uses digital power supply. So control interface between IOC and power supply is Ethernet interface.
文摘The architecture of SSC-Linac vacuum control system is based on EPICS. The interlock of vacuum devices inSSC-Linac was introduced. We use C-RIO as an EPICS IOC to acquire data from vacuum gauges and controlvacuum valves. The software is programmed by Labview.The interlock of vacuum devices is very important for the whole system. If the pressure of the vacuum gauge islarger than the value we preset, the vacuum valve will be pushed in automatically and it can't be operated. If thepressure is smaller than the present value, we can operate the vacuum valve to be in or to be out[1].
文摘The output stability of power supply for Heavy Ion Research Facility of Lanzhou (HIRFL) is signicant. Powersupply provides currents to magnets which produce the magnetic eld to constraint particles. So the output stabilityof power supply has a great signicance to the quality of beams. In order to test the stability of power supply, weuse a Fluke 8846A digit precision multimeter based on LabView platform of National Instrument Corporation.Remote operation of 8846A Digital Multimeter from a host, that is a terminal, controller, PC, or computer, isaccomplished by sending commands to it through one of its remote interfaces. The Multimeter is controlled remotelyusing Standard Commands for Programmable Instruments (SCPI), Fluke 45 or Fluke 8842A (8840A and 8842A)commands. The meter can be remotely controlled through the LAN port on the Meter's rear panel[1] We can sendSCPI commands to the Meter using network communicating controls provided by LabView[2]. This program couldbe used to test output stability of power supply of HIRFL.
文摘Design and development of the beam instruments for the HIAF project.By the end of 2022,we have completed the design and beam tests of almost all types of beam instruments for HIAF,and most of the beam diagnostics induments for HIAF iLinac,booster ring(BRing)and HFRS are entering the batch fabrication stage.Most of the key detector models have already been tested with beam at IMP,for example the wall current monitor,the diagonal-cut type beam position monitor for BRing,the strip-line type beam position monitor for HFRS,the beam loss monitor and so on,which are proved to meet our project requirements.
