1. DØ Online16-April-1999S. Fuess Online Computing Status DØ Collaboration Meeting 16-April-1999 Stu Fuess

2. DØ Online16-April-1999S. Fuess Outline The event data path Simplified views of the Online system –with comments on status The Online Workshop

3. DØ Online16-April-1999S. Fuess Event Data Path Detector L3 VRC Readout Crate Data Cable L3 Filter Ethernet Collector / Router Data Logger RIP Disk FCC L3 VRC Readout Crate Data Cable L3 Filter Ethernet Collector / Router Data Logger RIP Disk Ethernet 0 - 7 A,B,C

4. DØ Online16-April-1999S. Fuess Component Systems Detector FCC UNIX Servers NT Level 3 Linux PCs Control Room PCs Controls Trigger and Readout

5. DØ Online16-April-1999S. Fuess Simplified Event Data Path Detector L1, L2 TCC L3 Supervisor L3 VRC Readout Crate L3 Filter Ethernet Collector / Router Data Logger RIP Disk FCC Ethernet Data Cable Single crate readout Single crate readout Relayed via Level 3 VRC Relayed via Level 3 VRC Received in host, logged to disk Received in host, logged to disk Status: Trigger and Readout UNIX Servers NT Level 3 Multi-crate awaits Trigger framework

6. DØ Online16-April-1999S. Fuess Detector Control & Monitoring Detector Readout Crate Controls Crate Trigger and Readout UNIX ServersControl Room PCs EPICS Clients: Low Voltage High Voltage Rack Monitor 1553 Devices SMT Monitor FT Monitor etc EPICS Clients: Low Voltage High Voltage Rack Monitor 1553 Devices SMT Monitor FT Monitor etc Controls Ethernet 1553 ORACLE Hardware Database EPICS DB Generator Available: LV Client GUI RMI Client GUI 1553 Client GUI EPICS DB In progress: High Voltage SMT, FT monitors ORACLE DB DB population Available: LV Client GUI RMI Client GUI 1553 Client GUI EPICS DB In progress: High Voltage SMT, FT monitors ORACLE DB DB population Vertical Interconnect

7. DØ Online16-April-1999S. Fuess Low Voltage Control GUI Missing this slide

8. DØ Online16-April-1999S. Fuess Secondary Data Path Detector FCC UNIX Server NT Level 3 Ethernet Linux PCsControl Room PCs Controls/Readout Crate Ethernet EPICS DART CA Client Control GUI 1553 Bus VME Bus Detector DAQ Collector / Router Data Logger RIP Disk Collector / Router Data Logger Disk Data Distributor EXAMINE Examine GUI Examine GUI RIP

9. DØ Online16-April-1999S. Fuess Event Monitoring Detector L1, L2 TCC L3 Supervisor L3 VRC Readout Crate L3 Filter Collector / Router Data Logger Disk Data Cable UNIX Servers NT Level 3 Ethernet Linux PCsControl Room PCs Data Distributor EXAMINE Express Line ROOT Client Trigger and Readout Status: Events transported to EXAMINE CFT EXAMINE package committed, CAL soon ROOT browser demonstrated Status: Events transported to EXAMINE CFT EXAMINE package committed, CAL soon ROOT browser demonstrated

10. DØ Online16-April-1999S. Fuess Configuration and Run Control Detector L1, L2 TCC L3 Supervisor L3 VRC Readout Crate L3 Filter FCC Data Cable Controls Crate UNIX Servers NT Level 3 Ethernet Linux PCs Control Room PCs ControlsTrigger and Readout Run Control Client Run Control Client Downloader DAQ Manager COOR Collector / Router Data Logger Disk Data Distributor EXAMINE RIP Status: Design and prototyping Status: Design and prototyping 1553 Vertical Interconnect

11. DØ Online16-April-1999S. Fuess DAQ Monitoring L1, L2 TCC L3 Supervisor L3 VRC Readout Crate L3 Filter Data Cable UNIX Servers NT Level 3 Ethernet Control Room PCs Trigger and Readout DAQ Monitor GUI DAQ Monitor GUI DAQ Monitor DAQ Monitor Collector / Router Data Logger Disk Data Distributor RIP Status: Design and prototyping Status: Design and prototyping

12. DØ Online16-April-1999S. Fuess Example DAQ Monitoring GUI

13. DØ Online16-April-1999S. Fuess Calibration Detector L1, L2 TCC L3 Supervisor L3 VRC Readout Crate L3 Filter Calibration Tool Calibration Manager Database Data Cable UNIX Servers NT Level 3 Ethernet Control Room PCs Trigger and Readout Calibration Client Calibration Client Design stage

14. DØ Online16-April-1999S. Fuess and more... Several subsystems have tentacles to many other applications: –Alarm System “Significant events” from –front end processors monitoring hardware –front end processors monitoring local (crate level) quality of data –software processes monitoring workings of Trigger & DAQ system –software processes monitoring global quality of data “Heartbeats” to watch activity of crictical applications –Database Operations Controls system “Hardware” database “Metadata” associated with event data Calibration data Luminosity data Monitoring logs and others... EPICS Alarm Handler demo’d Alarm Server prototyped EPICS Alarm Handler demo’d Alarm Server prototyped Various stages of design

15. DØ Online16-April-1999S. Fuess Online Workshop June 3 rd and 4 th in Paris Prague PK151 Goals: –To demonstrate the entire chain of DAQ with single crate readout through the path: Crate - Level 3 - C/R - Logger - File \ DD - EXAMINE –To demonstrate control system operation –To identify “volunteers” for each subsystem –To critique existing applications –Real work, not just meetings! Online needs: –Effort from detector groups on (1) Hardware control and monitoring (2) Data monitoring (3) Calibration –Workshop addresses items (1) & (2)

16. DØ Online16-April-1999S. Fuess Online Workshop 6/3/99-6/4/99 Agenda –Day 1, AM Welcome: Workshop goals Overview of entire Online system Introduction to Controls system Introduction to Event Monitoring system –Day 1, PM Demonstration of Controls applications Demonstration of Event Monitoring applications –Day 2, AM (parallel) Tutorials on building a Controls application Python GUIs EPICS access Tutorials on building an Event Monitoring application Analysis framework and EXAMINE ROOT browser –Day 2, PM Laboratory work Recreating the demos Extensions Beyond the workshop: - Periodic reports on user-built applications - Seattle workshop: continued progress on EXAMINEs

17. DØ Online16-April-1999S. Fuess Conclusions Much progress has been made in producing the basic components of the Online system Our group’s principal task now is to integrate these components We have working elements of the Event Data Monitoring and the Control and Monitoring sub-systems –To the point where the detector specific adaptations can be made The goals of the Online Workshop are to identify and train those people who will write the software to go with the detector hardware