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operational performance

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DW01 Machine Protection And Interlock Systems
Session 1: Wednesday (11:15--13:00 Hrs) 		diagnostics, instrumentation, controls, man-machine-interface 259
 
  • K. Wittenburg
    DESY, Deutsches Elektronen-Synchrotron, Hamburg, Germany
  • K. Scheidt
    ESRF, European Synchrotron Radiation Facility, Grenoble, France
  The purpose of a MPS is to protect the equipment against abnormal beam behaviour. High intense and high brilliant particle, photon and X-ray beams are capable of causing significant damage to components in a fraction of a second, i.e. too fast for any human reaction. The aim of this session is to discuss existing and planned MPS with both their specific and their general requirements. Among points to be reviewed: the choice of sensors and components, the logic, the strategy, etc. in view of the need for the MPS to be fail-proof. Some typical questions that will be raised: What are the criteria for determining that an alarm situation has been reached and what is the subsequent action of the system? Very often the MPS may allow different beam modes, depending on beam permit inputs. Which kind of beam modes exist and what are the input signals? How are these systems integrated with the accelerator controls and what is the impact on their operation? This session will include a few very brief presentations of existing and planned MPS' from different machines to illustrate the above questions and to stimulate the subsequent discussion.  
 
DW02 Global Accelerator Network, Control Systems And Beam Diagnostics
Session 2: Wednesday (11:15--13:00 Hrs) 		diagnostics, instrumentation, controls, man-machine-interface 260
 
  • U. Raich, H. Schmickler
    CERN, Geneva, Switzerland
  Falling funds force all accelerator centers to look for new sources of financing and for the most efficient way of implementing new projects. This very often leads to collaborations between institutes scattered around the globe, a problem well known to big high energy physics experiments. The collaborations working on big detectors e.g. for LHC started thinking about detector acquisition and control systems which can be remotely used from their respective home institutes with minimal support on the spot. This idea was taken up by A. Wagner from DESY for the TESLA machine, who proposed the “Global Accelerator Network” (GAN) enabling users from around the world to run an accelerator remotely. Questions around this subject that immediately come to mind
  • Is the GAN only relevant to big labs ? Or is it reasonable e.g. for operators or engineers in charge to do certain manipulations from home?
  • Are our instruments ready for the GAN?
  • Does the fact of being “GAN ready” increase the cost of the instruments?
  • What are the advantages and disadvantages?
  • Do we want these features? or do inconveniences prime over advantages?
  • Do any of the labs already have experience with GAN or any system going into this direction?
  • What does GAN mean for the relationship between controls and beam diagnostics (a sometimes difficult chapter)?
  • Can measurement systems be put onto the WEB and if yes, which ones
  • Where are the limitations?
  • Can the scope of GAN be expanded to “remote diagnostics and active maintenance” of equipment, i.e. collaborating partners maintain their product in service after commissioning.
  • What about common machine experiments with people sitting in different control rooms?
  • What communication systems have to be put in place for this?
  • Are there security issues and how do we deal with them?