DAQ III

Data Storage

!! Under Construction !!
Please be patient...

The DAQ system contains a large number of components that have to be monitored and controlled constantly. For this purpose a "Slow Control Network" (SC) will provide the means to view and change the status of the detector.

The person on shift duty will have a graphical user interface (GUI) which gives the overall status and subwindows are accessible to get a detailed view of the system.
Our present choice is to use JAVA applets running in a WEB browser!

The fundamental building block of the system is the "communication protocol". Since SC will be distributed we need a communication system (ComSys) that is a perfect match to our environment.
Our present choice is the emerging CORBA standard, that gives the programmer object-oriented connectivity. The implementation we use is `VisiBroker' by Visigenic.
The supported platforms are:

• DIGITAL UNIX, V3.2; CXX, version 5.3-5.5.
• DIGITAL UNIX, V4.0; CXX, version 5.5.
• SUN SOLARIS 2.5; CC, version 3.0.
• Windows NT, 3.51/4.0; Visual C++, version 4/5.
• Tornado 1.0 (VxWorks 5.3) for PowerPC; GNU Gcc 2.7.2.

Check out the CLEO IDL standards how to create an IDL file following our standards.

In order to have a large part of the SC software written independently of the underlying OS architecture, the BASICSclass library was written. It is approaching its first release fast.

The supported platforms are:

• DIGITAL UNIX, V3.2; CXX, version 5.3-5.5.
• DIGITAL UNIX, V4.0; CXX, version 5.5.
• SUN SOLARIS 2.4/2.5; CC, version 3.0.
• PowerPC VxWorks 5.3; Gnu CC, version 2.7.2 (patched).
• Windows NT, 3.51/4.0; Visual C++, version 4/5.

• LINUX; Gnu CC, version 2.7.2.
• DIGITAL UNIX, V3.2; Gnu CC, version 2.7.2.
• SUN SunOS 4.1.X; Gnu CC, version 2.7.2.
• MC68k VxWorks 5.3; Gnu CC, version 2.6.

(Any suggestions?)

A documentation, DAQ note, and a tar file will be available, soon.

All interfaces will be stored in a couple of libraries, one containing the communication code linked to clients, and a online class library containing code to manage the standard naming framework and provide other utility classes.

DAQ III

Data Storage