A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z    

Takahashi, H.

Paper Title Page
THPCH117 Synchronized Data Monitoring and Acquisition System for J-PARC RCS 3077
 
  • H. Takahashi, Y. Ito, Y. Kato, M. Kawase, H. Sakaki, T.S. Suzuki
    JAEA, Ibaraki-ken
  • M. Sugimoto
    Mitsubishi Electric Control Software Corp, Kobe
 
  J-PARC RCS* is a proton synchrotron with an extreme high power of 1MW, and delicate care must be taken to suppress radiation due to beam loss. The RCS injects each beam pulse of 25 Hz into the MLF** and the MR*** in a predefined order. Furthermore, the different beam control parameters are required for the MLF and the MR. Therefore, in order to reduce beam loss, synchronicity of data is indispensable. For this reason, control data monitoring and acquisition must be made separately for each beam pulse, distinguishing the destination in the control system. The data, which require synchronicity monitoring and acquisition, are such as beam position data (BPM**** data). We select mainly these data, and we are developing the synchronized data monitoring and acquisition system based on RM*****, WER******. The status of development and some test results for this system will be presented in this report.

*Rapid-cycling Synchrotron **Materials and Life Science Facility ***50 GeV Main Ring ****Beam Position Monitor *****Reflective Memory ******Wave Endless Recorder

 
THPCH118 Development of the Event Notice Function for PLC 3080
 
  • M. Kawase, H. Takahashi
    JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
  • T. Ishiyama
    MELCO SC, Tsukuba
 
  A lot of equipment which controls in J-PARC accelerator composition machinery using PLC (Programmable Logic Controller) exists. The transmitting method to upper control systems, such as interlock information on accelerator composition apparatus, state changes information, and information on the right of control operation, is not performed by polling. The event notice function is used and it transmits to the upper control system. In the case of polling, information is transmitted to the upper control system to a number "msec" order. In the case where the event notice function is used, an event can be interrupted at the time of event generating, and information can be transmitted to a target to the upper control system at it. By the J-PARC control system, it makes it possible to transmit the information on state change (event) to the upper control system immediately from PLC by using the rudder sequence program which the rudder sequence program for apparatus control detected change of a state, and mounted the event notice by using this event notice function. The J-PARC control system which mounted the event notice function is reported.