Maximum Integrated Data Acquisition System

<h2 id="description">Description</h2>
<p>MIDAS (Maximum Integration Data Acquisition System) has been developed as a general purpose data acquisition system for small and medium scale experiments originally by <a href="/facts/Stefan_Ritt/IB6wYqhX">Stefan Ritt</a> in 1993, followed by Pierre-André Amaudruz in 1996. It is written in <a href="/facts/C_(programming_language)/Ky2No763">C</a> and published under the <a href="/facts/GPL/S75KhLSX">GPL</a>.
</p><p>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 <a href="/facts/Linux/9FvCKSTq">Linux</a>, <a href="/facts/Microsoft_Windows/bwhAhuSL">Microsoft Windows</a>, various versions of UNIX, <a href="/facts/OpenVMS/rAnHAgpD">VMS</a>, <a href="/facts/VxWorks/DCajjp0d">VxWorks</a> and <a href="/facts/MS-DOS/fVrrz1uN">MS-DOS</a> and can be ported easily to virtually any operating system which supports <a href="/facts/Internet_socket/r1ldfkb5">TCP/IP sockets</a>.
</p><p>A speed-optimized RPC layer is used for data exchange, with which sustained data rates of 980 kB/s (<a href="/facts/10BASE-T/2jRlgJb4">10BASE-T</a>), 8.7 MB/s (<a href="/facts/100BASE-TX/YM5HjX0C">100BASE-TX</a>) and up to 98 MB/s (<a href="/facts/1000BASE-T/1ItIoV2w">1000BASE-T</a>). 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 <a href="/facts/Physics_Analysis_Workstation/ApHa8KMC">PAW</a> as histograms and N-tuples as well as by <a href="/facts/ROOT/Hk7ucczM">ROOT</a>. 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).
</p>
<h2 id="usage-of-midas">Usage of MIDAS</h2>
<p>MIDAS is used in many experiments in nuclear and particle physics. Following list shows a few of them:
</p>
<ul><li><a href="/facts/Mu_to_E_Gamma/gIp8Eowc">Mu to E Gamma</a> experiment at <a href="/facts/Paul_Scherrer_Institute/J7RsBL5U">PSI</a></li>
<li>Mu3e experiment<a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a> at PSI</li>
<li>Laboratory for Muon Spin Spectroscopy<a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a> at PSI</li>
<li>TWIST experiment at <a href="/facts/TRIUMF/CND7CLBL">TRIUMF</a></li>
<li>Various ISAC experiments<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a> at TRIUMF</li>
<li><a href="/facts/T2K_experiment/jzjh4SNc">T2K experiment</a> in Japan</li>
<li><a href="/facts/DEAP-3600/fXEuX90M">DEAP-3600</a> experiment at <a href="/facts/SNOLAB/qzyPjIvF">SNOLAB</a></li>
<li><a href="/facts/Muon_g-2/BLoFv9GW">Muon g-2</a> experiment at <a href="/facts/Fermilab/8yyTx3oj">Fermilab</a></li>
<li><a href="/facts/ASACUSA/dwnr6Gsd">ASACUSA</a> experiment at <a href="/facts/CERN/y1gwRchm">CERN</a></li>
<li><a href="/facts/ALPHA_experiment/dwnr6Gsd">ALPHA experiment</a> at <a href="/facts/CERN/y1gwRchm">CERN</a></li></ul>

<h2 id="external-links">External links</h2>
<ul><li><a href="http://midas.triumf.ca">MIDAS home page at TRIUMF, Canada</a></li></ul>

<h2 id="references">References</h2>

<ol>
<li id="fn:1"><p>"Paul Scherrer Institut (PSI)". psi.ch. <a href="http://www.psi.ch/mu3e" target="_blank">http://www.psi.ch/mu3e</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li>
<li id="fn:2"><p>"Paul Scherrer Institut (PSI)". psi.ch. <a href="http://www.psi.ch/lmu" target="_blank">http://www.psi.ch/lmu</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li>
<li id="fn:3"><p>"MIDAS around the world — DAQ Plone Site". daq-plone.triumf.ca. Archived from the original on 6 July 2011. Retrieved 13 January 2022. <a href="https://web.archive.org/web/20110706205828/https://daq-plone.triumf.ca/SR/MIDAS/aroundworld.html" target="_blank">https://web.archive.org/web/20110706205828/https://daq-plone.triumf.ca/SR/MIDAS/aroundworld.html</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li>
</ol>

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Maximum Integrated Data Acquisition System