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SwissFEL Diagnostics Review, 2013-03-04 Screen Monitor Rasmus Ischebeck

SwissFEL Diagnostics Review, 2013-03-04 Screen Monitor Rasmus Ischebeck. Task: Measurement of Transverse Profiles. Technical Requirements Operational Requirements * With the possible exception of the last monitor before the beam dump.

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SwissFEL Diagnostics Review, 2013-03-04 Screen Monitor Rasmus Ischebeck

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  1. SwissFEL Diagnostics Review, 2013-03-04Screen MonitorRasmus Ischebeck

  2. Task: Measurement of Transverse Profiles • Technical Requirements • Operational Requirements • * With the possible exception of the last monitor before the beam dump Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 2

  3. Distribution in SwissFEL • 23 Screen Monitors: Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 3

  4. Measurement Principle • Combination of two monitors: • Scintillating crystal • Optical transition radiation • Wire scanners: See Gian Luca’s presentation Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 4

  5. Design Considerations • Scheimpflug imaging principle • Snell’s law of refraction Observation of the Scheimpflug imaging principle allows to image the entire screen without depth- of-field issues. To avoid astigmatism, the lens is not tilted, but the detector is tilted. For a 1:1 imaging, we tilt the CMOS sensor by 15º. The YAG / LuAG scintillators are observed at such an angle that Snell’s law of refraction is observed. As a consequence, we can image beams that are smaller than the thickness of the scintillator. Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 5

  6. Implementation (coherent) OTR to camera Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 6

  7. Implementation: Prototype installed in SITF Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 7

  8. Measurements with the Prototype > Emittance Measurement The smallest beam in this measurement is 50 µm rms. Beams of 10 µm rms have been measured. Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 8

  9. Measurements with the Prototype • Slice emittance measurement of a 10 pC beam Eduard Prat, Marta Divall Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 9

  10. Measurements with the Prototype • Slice emittance measurement of a 1.3 pC beam Eduard Prat, Marta Divall Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 10

  11. Status / Time Plan • Fabrication by external company planned • Presently starting industrialization study Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 11

  12. Time Plan Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 12

  13. Resources ⊠ Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 13

  14. Open Issues / Questions to the Committee • Please evaluate the presented solution with respect to • Suitability of the chosen concepts • Appropriateness of the design for the given specifications • Feasibility of the technical designs • Assess whether the presented time plans and resource planning is appropriate • Time plan • Material resources • Personnel planning Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 14

  15. Budget for Prototype ⊠ Rasmus Ischebeck, SwissFEL Diagnostics Review: Screen Monitor 15

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