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JAERI Motoki Oi Tetuya Kai Sinichiro Meigo Sinichi Sakai Hidetaka Kinoshita Kenji Sakai

Present Status of EPICS Development at the 3GeV Proton Beam Transport Facility Control System in J-PARC. JAERI Motoki Oi Tetuya Kai Sinichiro Meigo Sinichi Sakai Hidetaka Kinoshita Kenji Sakai Masanori Kaminaga. Contents. Outline of 3NBT monitor system Goal of 3NBT EPICS system

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JAERI Motoki Oi Tetuya Kai Sinichiro Meigo Sinichi Sakai Hidetaka Kinoshita Kenji Sakai

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  1. Present Status of EPICS Development at the 3GeV Proton Beam Transport Facility Control System in J-PARC JAERI Motoki Oi Tetuya Kai Sinichiro Meigo Sinichi Sakai Hidetaka Kinoshita Kenji Sakai Masanori Kaminaga

  2. Contents • Outline of 3NBT monitor system • Goal of 3NBT EPICS system • About CC/NET • Data Read & archive performance test • Channel access data missing and Tick frequency • Profile monitor test in KEK • Summary

  3. 3GeV Proton Beam Transport Facility(3NBT) Beam loss : ~1W/m Length : 310m Magnet : 108 Proton monitor : 89 3NBT Material & Life science Facility 50GeV PS Experimental Area (MLF)

  4. Goal of 3NBT EPICS system ・ Monitor all of the proton beam monitors at 25Hz ・ Archive all of proton beam monitor data with data tag ・ Control and monitor the beam line components (Magnet power supply, vacuum, etc.) ・Joint 3NBT to CCR and MLF control with EPICS network

  5. Outline of 3NBT Monitor system CCR MLF 3NBT Control EPICS OPI EPICS OPI EPICS IOC EPICS OPI Data Archiver EPICS IOC EPICS IOC LAN LAN CAMAC modules Data flow Total 1100 data DAQ at 25Hz CC/NET EPICS IOC Data flow CC/NET: CAMAC controller ADC Current Monitor Profile Monitor Halo Monitor Loss Monitor

  6. What is CC/NET PC104Plus Single Board Computer Interface: PCI and CAMAC CPU:Crusoe500MHz Memory：310MB Main Drive: Compact Flush 1GB Network：100MbpsEthernet OS：2.4 kernel Linux TRIG-IN BUSY-OUT Ethernet RBG OUT PS/2 USB

  7. DAQ mode of CC/NET CC/NET have three DAQ mode Single mode Programmed Dynamic Memory I/O mode Access mode Small Small Large Low Middle Fast High Low Middle Over head DAQ Speed CPU load Pipeline method used in PIO and DMA mode

  8. EPICS DAQ test sequence START NIM module Repeat at 25Hz Clock generator CAMAC module Base clock Gate signal ADC Gate generator Max 23 ADC Trig signal : delay 200 nsec CC/NET EPICS IOC Max 368 data CAMAC DAQ Channel Access Data Archive Channel Archiver EPICS IOC Linux WS • EPICS 3.14.6 • Channel Archiver 2.1 2

  9. Data Taking 16ch ADC x 23 slot = 368 data / CAMAC module 368 data / waveform is not reasonable. 64 data / Profile monitor 4 data / Halo monitor 4 data / Loss monitor 64 data is reasonable Change the NELM / Record and examine CC/NET-EPICS DAQ performance test

  10. Data Read & Archive performance test @25Hz CPU load DAQ time For small Number of Element, PIO mode is the better

  11. Data missing in Channel Access In the channel access between EPICS IOC to EPICS IOC, we got data missing. As a cause of data missing, I expect Linux tick frequency. Default tick frequency is 100 Hz. DAQ frequency is 25 Hz. These are near in order. CC/NET EPICS IOC Data Missing 0% Data Missing ~1% Change Linux tick 1000 Hz Compare Data missing ratio Linux WS Channel Archiver Linux WS EPICS IOC CCR, MLF EPICS IOC

  12. Tick and DAQ frequency Channel Access Data missing CC/NET to Linux IOC DAQ Tick (Hz) 100Hz 1000Hz 1Hz 0.1% 0.1% 10Hz 0.2% 0.2% 25Hz 0.8% 0.2% 33Hz 0.7% 0.2% 50Hz 0.6% 0.2% PIO mode Waveform 368 element CA performance is a little bit improved. This CA result is not perfect but enough for monitoring with I/O display

  13. Profile Monitor Test in KEK 3NBT line transports 1 MW power proton beam, we have to develop long life profile monitor. SiC wire type profile monitor is developed. Profile monitor performance is tested in KEK proton beam dump line.

  14. KEK NML Beam Dump from KEK-PS Proton Energy : 500 MeV Proton current : 182x1010ppb Frequency : 0.45 Hz Beam port : Beam dump line to Beam dump Profile monitor NML Beam dump to KENS Beam dump

  15. Profile monitor test component Prototype profile monitor Oscilloscope Signal check INV AMP Profile monitoring 32ch ADC CAMAC CC/NET EPICS IOC Linux WS SiC clad tungsten wire f100mm Data Archiver MEDM H:16 V:16 wires

  16. Results Raw signal Successfully get proton beam profile with SiC wire profile monitor!! MEDM window x32ch Horizontal Vertical Inv AMP ADC ADC count EPICS IOC Channel No Channel No

  17. Summary ・EPICS for 3NBT control system is under construction ・Data archive at 25Hz from CAMAC-CC/NET to Channel archiver on Linux WS is successful, but data transport among EPICS IOC has still data missing. ・ 25Hz DAQ data taking becomes better with changing the linux tick to 1000Hz. ・SiC wire proton beam profile monitor test was succeeded.

  18. Future plan ・Improve the EPICS data missing problem. ・PLC (FA-M3) data I/O operation test. ・Design 3NBT OPI display. ・Design and test the DAQ and data archive system with full scale system.

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