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:''For other uses of "MIDAS", see [[MIDAS (disambiguation)]].''
{{Infobox_Software
| name = MIDAS
| logo = [[Image:midas_daq_logo.jpg|70px|MIDAS logo]]
| screenshot = [[Image:Mhttpd.gif|363px|Example web page via mhttpd showing status of an experiment]]
| caption = Example web page via mhttpd showing status of an experiment
| developer = [[PSI]]
| latest_release_version = 2.0.0
| latest_release_date = November 2nd, 2007
| operating_system = [[Cross-platform]]
| genre = [[Data acquisition]]
| license = [[GPL]]
| website = [http://midas.psi.ch MIDAS home page]
}}
'''MIDAS''' is a [[DAQ]] package developed at the [[Paul Scherrer Institute]] and [[TRIUMF]]. It was designed for [[particle physics]] experiments using [[CAMAC]] and [[VME]] hardware.
== Description ==
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 (programming language)|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]], [[MS Windows]], various versions of UNIX, [[OpenVMS|VMS]], [[VxWorks]] and [[MS-DOS]] and can be ported easily to virtually any operating system which supports [[Internet_socket|TCP/IP sockets]].
A speed optimized RPC layer is used for data exchange, with which sustained data rates of 980kB/sec ([[10BaseT]]), 8.7MB/sec ([[100BaseT]]) and up to 98MB/sec ([[Gigabit Ethernet|1000BaseT]]). 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 [[Physics Analysis Workstation|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 representaion of variable trends (history display).
== Usage of MIDAS ==
MIDAS is currently used in the following experiments:
* [http://meg.psi.ch MEG experiment] at [[Paul Scherrer Institute|PSI]]
* PEN experiemnt at [[Paul Scherrer Institute|PSI]]
* TWIST experiment at [[TRIUMF]]
* Various [https://daq-plone.triumf.ca/SR/MIDAS/aroundworld.html ISAC experiments] at [[TRIUMF]]
== External links ==
* [http://midas.psi.ch MIDAS home page at PSI]
* [http://midas.triumf.ca MIDAS home page at TRIUMF]
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