Cryogenic Dark Matter Search Remote Controlled DAQ

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Cryogenic Dark Matter Search Remote Controlled DAQ

• Rupak Mahapatra
• UC Santa Barbara
• (for the CDMS Collaboration)

CHEP 2003
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Overview

• CDMS Experiment
• Data Acquisition Challenge
• Goals of the DAQ
• Tools to achieve these goals
• Status

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Cryogenic Dark Matter Search

• Dark Matter Where is the Missing Mass of the
  Universe? Rotation Curves Imply Much More Mass
• Strongest candidate Super-Symmetric Weakly
  Interacting Massive Particle (WIMP) gt 40 GeV
• Super-Sensitive Cryogenic Ge Si Phonon
  Ionization Detectors with 5keV Sensitivity
• CDMS-I _at_ SUF Limited by Neutron Background
• CDMS-II in a 3000ft Deep Mine in Soudan, MN

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DAQ Challenge in Soudan, MN

• Experiment Location A Challenge for Having
  Expertise Available On-Site
• Limited Mine Accessibility Can Not Get Control
  of Experiment on Demand

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Need Remote Controlled DAQ

• Provide Means to Remotely Control Monitor A
  Virtual Control Room _at_Anywhere On Demand
• Not Only Provide Control From Outside the Mine,
  But Also Bring in The Expertise To The Mine By
  Providing Them Remote Access, Using Internet
• Have Experts Diagnose Fix Problems Remotely
• In Normal Running No Need to Have Experts On
  Site, Provided We Can Have Them When Needed

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This would be reality
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Innovation is the key

This, the dream ..
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Tools of This DAQ

• Needed a Distributed, Platform Ind., Networked
  Control System, Using Internet For Remote Access
• Used JAVA, C AND CORBA To Achieve This
• Hardware Servers Written in JAVA C
• CORBA and JAVA RMI for Inter Process Calls
• Developed Universal Communication Modules
• Remote GUIs and Plots in JAVA using RMI

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New DAQ Benefits

• Remote Control Innovative and Crucial
• Internet based access allows anywhere-control
• Reduces need for extended onsite presence
• Exploit the Internet
• Complete Platform Flexibility Win, Mac, Unix.
• Modern language (JAVA) Allows This
• Highly Modular Scalable Software Framework
• Easy and inexpensive to adapt and develop
• No major modifications needed for adding
  components

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How This Works

• Download client software from web-page
• Client software talks to Run Control server (via
  Internet) running on mine computer
• Run Control then conducts the orchestra of all
  software components running on mine computers to
  do the experiment

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Live Demo of Remote Control