The COLLECT Data Acquisition System     

       Multi-parameter DAQ in a small lab environment  !!!!! 

The POWER of LINUX, PAW and the CERNLIBs in a PC - CAMAC system

  • Open Source development at SourceForge.
    Download the Software from Source Forge here

  • COLLECT is a powerful multi-parameter data acquisition system, running on a Linux PC. It front-ends the Physics Analysis Workstation (PAW/PAW++)CERNLIB page) to a CAMAC crate. The PAW system can be used as an online presenter as well as for offline replay of the data. COLLECT can be easily configured to any desired experiment by reserving the appropriate space in the ntuple as well as loading the appropriate CAMAC commands for the desired event strucuture. The event structure is determined by the experiment and the various CAMAC modules used (ADCs, scalars, pattern modules etc). developed by CERN (see the
  • The Scientist configures a C++ source file (in the current version) to reflect the experiment configuration. The process is simple and can be done by any person with a reasonable level of computing know-how. The CAMAC-NAF codes are defined for the SETUP, START, GO, PAUSE and STOP operations. These NAF codes are obained from the CAMAC module's manual. The ntuple size and structure are also defined in this file. COLLECT is then compiled using a makefile.
  • At SETUP time, COLLECT downloads the CAMAC instructions to be processed during each CAMAC cycle to a List Sequencer in the CAMAC crate. The appropriate resetting and initialising functions as required are also performed. START then follows, and CAMAC cycles commence. The List Sequencer buffers events to be transferred. Blocks of events are written both to a PAW hbook disk ntuple and to PAW Global shared memory (cyclically). PAW can then be used as an online presenter. During a run, the normal UNIX pause, continue and terminate keyboard instructions are used to trigger the operations of PAUSE, GO and STOP as defined previously. After the experiment, PAW can be used to process and visualise the disk ntuple.
  • This software was developed at theSRCNS at the University of the Witwatersrand by Sergio Ballestrero. It has been tested using the following hardware : Kinetic Systems 3988 crate controller (GPIB interface), Kinetic Systems 3982 List Sequencer, Ortec Octal ADC 811, Ortec Quad 8k ADC 413A, Pattern Register SEN 16P2047, 12 channel Scalar Lecroy 2551).
  • The performance with this system is a rate of 4kHz giving about 15% dead-time when 6 analog signals are used.
  • Upcoming improvements : XCOLLECT : Work is being done on a GUI version with a more easily configured CAMAC and ntuple setup file

Other Links for Linux DAQ Links for LINUX HEP Links for CAMAC

 Direct any enquiries with regards COLLECT to Simon Connell (COLLEC maintainer)