Maximum Integrated Data Acquisition System

For other uses of "MIDAS", see MIDAS (disambiguation).

MIDAS

Example web page via mhttpd showing status of an experiment

Developer(s)| Paul Scherrer Institute, TRIUMF
Stable release|

2.0.0 / November 2, 2007; 17 years ago (2007-11-02)

Repository|

* bitbucket.org/tmidas/midas/src

Operating system| Cross-platform
Type| Data acquisition
License| GPL
Website| midas.psi.ch

MIDAS is a data acquisition package developed at the Paul Scherrer Institute, Switzerland, and TRIUMF, Canada. It was designed for particle detectors using CAMAC and VMEbus hardware.

## Description

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MIDAS (Maximum Integration Data Acquisition System) has been developed as a general purpose data acquisition system for small and medium scale experiments originally by Stefan Ritt in 1993, followed by Pierre-André Amaudruz in 1996. It is written in C and published under the GPL.

The experiment complexity ranges from test systems, where a single PC is connected to CAMAC via a PC-CAMAC interface, to experiments with several front-end computers and analysis nodes. The system currently runs under Linux, Microsoft Windows, various versions of UNIX, VMS, VxWorks and MS-DOS and can be ported easily to virtually any operating system which supports TCP/IP sockets.

A speed-optimized RPC layer is used for data exchange, with which sustained data rates of 980 kB/s (10BASE-T), 8.7 MB/s (100BASE-TX) and up to 98 MB/s (1000BASE-T). An integrated slow control system contains a fast online database and a history system. Drivers exist for CAMAC, VME, Fastbus, High Voltage Crates, GBIB and several PC plug-in DAQ boards. A framework is supplied which can be extended by user code for front-end readout on one side and data analysis on the other side. The online data can be presented by PAW as histograms and N-tuples as well as by ROOT. A dedicated HTTP server gives fast Web access for experiment control and to access the slow control system including a graphical representation of variable trends (history display).

## Usage of MIDAS

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MIDAS is used in many experiments in nuclear and particle physics. Following list shows a few of them:

* Mu to E Gamma experiment at PSI
* Mu3e experiment[1] at PSI
* Laboratory for Muon Spin Spectroscopy[2] at PSI
* TWIST experiment at TRIUMF
* Various ISAC experiments[3] at TRIUMF
* T2K experiment in Japan
* DEAP-3600 experiment at SNOLAB
* Muon g-2 experiment at Fermilab
* ASACUSA experiment at CERN
* ALPHA experiment at CERN

## References

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1. ^ "Paul Scherrer Institut (PSI)". psi.ch.
2. ^ "Paul Scherrer Institut (PSI)". psi.ch.
3. ^ "MIDAS around the world — DAQ Plone Site". daq-plone.triumf.ca. Archived from the original on 6 July 2011. Retrieved 13 January 2022.

## External links

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* MIDAS home page at TRIUMF, Canada