1. Magnet Slowcontrol Overview Mu3e DAQ system
Integration of magnet into DAQ system
Interfaces

2. Traditional Slow ControlHV
Temperature, pressure, …
Valves
12345
Terminal Server
PLC
RS232
GPIB PC
???
15° C
Ethernet
heater
MIDAS
DAQ
12:
12:
13:
14:
15:
18:
19:
19:

3. Single Slow Control SystemHV
Temperature, pressure, …
Valves
Single System
to control all!
heater
MIDAS
DAQ

4. SCS-2000
64 IOs
CPLD
uC board

5. SCS-2000 IO Cards EEPROM Experimental Board Debug Board 3.3V/5V
8 In/Out
24V 2A
8 Out
4 Relais
0-20mA
8 Out
-10…+10V
8 Out
-10…+10V
0..2.5V
0..20mA
8x24bit In
0…10nF 0…1uF
4 In
Opt.-Coupler
4 Out

6. Interface nodes
Some experiment hardware has own controllers → need interfaces
Parallel (Centronics), RS-232 and GPIB adapter
Work either string oriented or with local protocol handlers

7. Optical Link
Optical transceiver for >5kV insulation, necessary for electrostatic separator (200kV) 1 2 3 4 5 6 7 8
start
stop
enable
RS- 485
enable
NE555

8. MIDAS integration Hardware Hardware Hardware Interface Interface
MIDAS Online Database
Alarm System
History
Web server

9. MIDAS Custom Pages & History
MIDAS “custom” page for MEG beam line magnet
MEG gas system

10. Analog interface Magnet Power Supply Control Box 0-10 V 4-20 mA 24 V
Danfysik
PSI
Control Box

11. Magnet Control
Standalone (non-PC) control of superconducting magnet

12. Digital interface Magnet Power Supply Control Box Interface 0-10 V
Danfysik
RS232
PSI
“setcurrent 100A”
“readcurrent”
Interface

13. Web interface Magnet Power Supply Control Box Web server 0-10 V
Danfysik
PSI

14. Conclusion The experiment needs central control & monitoring of magnet
Different interfaces and strategies possible
Choose method which is best for both sides