Presented by Li Gang Accelerator Control Group CEPC-Control Presented by Li Gang Accelerator Control Group 2018/5/17

Survey of Control Software Redundant technology Overview Survey of Control Software Redundant technology Post mortem technology based on event timing system Prototype of MPS 2018/5/17

Overview: Challenges from CEPC Super Large Scale: around 53.6 km in circumference V∙S LHC  27-kilometre ring FECs and Devices: CEPC more V∙S LHC 2,000 FECs and 85,000 controlled devices  High reliability && high availability Overall faults analysis : Power supplies, cryogenics, injections, SRFs, vacuum ,etc=> protection strategies 2018/5/17

Overview: Requirement of control Overall information; Monitoring and recording; Fault diagnostics; Global && local controls; Automatic process control, feedback; Sequence control; Prevention of dangerous action Timing system Machine protection

Overview: Performance of control Reliability; Flexibility, scalability and maintainability,; Cost effective; Fast development; Ease of use (developers and users) Documentation/support 2018/5/17

Overview: control subsystem Center control system: data server, data archiver, etc Control network Timing system Machine Protection System Vacuum control system Temperature Monitoring system。 Post Mortem Power supply control system Video Monitoring system Others 2018/5/17

Survey of Control Software PVSS: CERN, 50 years, Commercial product from ETM company, Austria Some features • Human-machine interface (process visualization) • Devices described as data points (DP), device properties as data point elements (DPe) • Control device access • Alarm handling (display, filtering, etc.) • Archiving and trending , etc 2018/5/17

Survey of Control Software 2018/5/17

Survey of Control Software EPICS: 40years, more than 150 labs or companies,, Some features 2018/5/17

How does EPICS do ? Process Variables: Power Supply 04/05/13 How does EPICS do ? Channel Access Client Channel Access Client Channel Access Client Channel Access Client Channel Access Server Process Variables: Power Supply Computer Interface S1A:H1:CurrentAO S1:P1:x S1:P1:y S1:G1:vacuum Beam Position Monitor Computer Interface Vacuum Gauge Computer Interface Let’s take an example: Suppose you had a particle accelerator to control. Among many other things, 10

EPICS Version 4 Production HLA Client PVAccess/CAC MMLT Client Scripting HLA Client Control System Studio PVAccess / CAC Completed Early Development Being Extended PVAccess/CAC PVAccess/CAC Ethernet PVAccess PVAccess PVAccess PVAccess/CAC PVAccess/CAC PVAccess/CAC Middle Layer Servers Model Server Lattice Server Channel Finder Svr Multi-Channel Arrays Svr Save/Compare Restore Svr Magnet Conv, Response Matrix, Dispersion, etc…. Elegant/Tracy SQL SQL Serves orbit, magnets, any array of channels SQL RDB IRMIS IRMIS Distributed Front-Ends PVA Diagnostics CAS Power Supplies PVA CAS PVA RF CAS Vacuum PVA CAS PVA Utilities etc.., CAS Diag & PS PVA CAS Physical Device Physical Device Physical Device Physical Device Physical Device LS2 Simulation Supporting the next generation of scientific control systems.

Survey of Control Software TANGO: 15 institutes, European TANGO Controls is a software toolkit : for connecting things together + building control systems + integrating systems The TANGO community meetings take place each year alternately in one of the 15 institutes members of the TANGO consortium.  They group together all the members of the community with the developers. They present the last technical progress and agree on the development strategy and roadmap 2018/5/17

Survey of Control Software 2018/5/17

Survey of Control Software DOOCS: DESY, German,  European XFEL Distributed Object Oriented Control System 2018/5/17

Other Possibilities… 2018/5/17

Redundant technology A user facility with high demands for 99.8% efficiency The control system may not fail ● Possible scenarios: ⇒Cold stand by ( switching ‚on demand‘; i.e. for maintenance) ⇒ Hot stand by ( seamless switch of IOC‘s) Hardware maintenance Software maintenance Installing new system-/ application- Software 2018/5/17

Redundant technology 2018/5/17

Post mortem analysis based on event timing system Timing and Synchronization are very IMPORTANT everywhere. Global system. Possibility to integrate post mortem analysis into event timing system. Software infrastructures including database are under evaluation

Post mortem analysis based on event timing system Timing Master timing feedback Timing Distribution feedback feedback timing feedback timing timing Timing Receiver Timing Receiver Timing Receiver timing feedback timing feedback timing feedback Data Acquisition Data Acquisition Data Acquisition

Prototype of MPS Fast-MPS: Prevention of dangerous action Response time : < a few tens of microseconds  High availability: redundant hardware Predefined interfaces: relays, optical ports …

Prototype of MPS redundant hardware 2018/5/17

Fast-MPS (Main Board) UART Opt. transceivers/ RocketI/Os/6 Gb net Extended IOs/64 Lamp indicators/8 FPGA/XC6SLX 100T-3FGG900 CPU/ Loongson 2F VME P1/P2 VME J1/J2 22 22

经费预算 Prototype and development International academic exchange 0.75M 服务器4*3、前端设备23、仪器32（信号源、示波器） 电子学及配件8 International academic exchange 0.25M/5-6 persons（3Dr+4） 2018/5/17

参加人员 2018/5/17 编号 姓名 性别 职称 学位 单位名称 电话 电子邮件 身份证号码 每年工作时间（月） 是否光源 1 雷革 女 研究员 博士 高能所 leige@ihep.ac.cn 6 是 2 金大鹏 男 jindp@ihep.ac.cn  否 3 李刚 高工 硕士 li75gang@ihep.ac.cn 否 4 赵卓 zhaozhuo@ihep.ac.cn 5 徐广磊 xugl@ihep.ac.cn  3  是 刘智 学生 博士在读 liuz@ihep.ac.cn 10 7 乔予思 qiaoys@ihep.ac.cn 2018/5/17

Thank colleagues from control group and others from accelerator center Thank international control experts from other institutes 2018/5/17