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Design and Prototype of Beam Pipe Distance Monitoring Safety Switch

This document outlines the design and initial prototype of a beam pipe distance monitoring safety switch. Key requirements include system reliability, a fail-safe mechanism, and a simple operating principle. The switch features metallic blades that generate a distance-dependent signal; a first switch activates an alert at a specific distance (7 mm), with additional switches at 6.5 mm for alarm activation. The design prioritizes minimal material usage and is intended for safe monitoring during installation and data collection, ensuring careful handling of the beam pipe.

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Design and Prototype of Beam Pipe Distance Monitoring Safety Switch

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  1. Design and first Prototype for a Beam Pipe Distance Monitoring Safety Switch Peter.Fauland@epfl.ch EDR @ EPFL, 14.10.05

  2. Requirements : • Reliability of the system •  „Fail-safe“ system •  Simple principle of operation • As little as possible additional material As a careful touching of the beam pipe is permitted .... Peter.Fauland@epfl.ch EDR @ EPFL, 14.10.05

  3. Beam Pipe Distance Monitoring both during installation and data taking Top- and Bottom Boxes Side Boxes Minimum distance : 7 mm !! Peter.Fauland@epfl.ch EDR @ EPFL, 14.10.05

  4. Each switch consists Of two mettalic blades, Allowing a distance- Dependent signal Three switches under & at the front of the detector box Three switches on top & at the front of the detector box One switch at the side of the detector box First switch activated at 7 mm distance from the beam pipe signal Second switch activated at 6.5 mm distance from the beam pipe alarm Peter.Fauland@epfl.ch EDR @ EPFL, 14.10.05

  5. Metall blade („finger strip“) : Thickness 500 microns Beryllium Copper Switching precision < 0.250 mm Foil around the beam pipe : Thickness 100 microns Copper Peter.Fauland@epfl.ch EDR @ EPFL, 14.10.05

  6. [Design model] Safety Switch for side boxes Stesalite piece & non magnetic blade Metallic foil Peter.Fauland@epfl.ch EDR @ EPFL, 14.10.05

  7. [Design model] Safety switch for top (and bottom) boxes Stesalite piece & non magnetic blade Metallic foil Peter.Fauland@epfl.ch EDR @ EPFL, 14.10.05

  8. Next steps ... • Furhter tests with different finger strips •  Detailed studies on electrical connection • possibilities • Studies on optimal fixation points (on the detector boxes) Peter.Fauland@epfl.ch EDR @ EPFL, 14.10.05

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