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Diffraction-limited storage-ring vacuum technology.

Eshraq Al-Dmour1, Jonny Ahlback1, Dieter Einfeld1

  • 1MAX IV Laboratory, Lund University, PO Box 118, SE-221 00 Lund, Sweden.

Journal of Synchrotron Radiation
|September 2, 2014
PubMed
Summary
This summary is machine-generated.

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Future storage rings require advanced vacuum systems. Non-evaporable getter (NEG) coatings and effective thermal management are key solutions for maintaining ultra-high vacuum in compact designs.

Area of Science:

  • Particle accelerators
  • Vacuum technology
  • Materials science

Background:

  • Modern storage rings feature compact lattices and small magnet apertures.
  • These characteristics pose challenges for vacuum system design and performance.
  • Handling synchrotron radiation heat load is critical.

Purpose of the Study:

  • To address vacuum challenges in compact storage ring designs.
  • To explore solutions for achieving required vacuum pressure and managing heat load.
  • To present vacuum technologies applicable to diffraction-limited storage rings.

Main Methods:

  • Utilizing non-evaporable getter (NEG) coatings for distributed pumping.
  • Employing chamber walls with good thermal conductivity as distributed absorbers.
Keywords:
DLSRNEG coatingcopper vacuum chambersvacuum

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  • Implementing distributed cooling at synchrotron radiation impact points.
  • Examining the MAX IV 3 GeV storage ring's vacuum system as a case study.

    • Main Results:

    • Non-evaporable getter (NEG) coatings enable distributed pumping in low-conductance chambers.
    • Chamber walls made of thermally conductive materials can act as distributed absorbers.
    • Integrated cooling strategies effectively manage synchrotron radiation heat load.
    • The MAX IV 3 GeV storage ring demonstrates viable vacuum solutions for future designs.

    Conclusions:

    • Distributed pumping with NEG coatings is effective for compact storage rings.
    • Chamber walls can serve dual roles as absorbers and structural components.
    • Advanced vacuum and thermal management are essential for diffraction-limited storage rings.