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scienceFriday, June 26, 2026 at 12:49 AM
Fermilab Achieves First Full-Scale Slow Extraction of 8 GeV Protons for Mu2e After g-2 Reconfiguration

Fermilab Achieves First Full-Scale Slow Extraction of 8 GeV Protons for Mu2e After g-2 Reconfiguration

Fermilab completed initial slow-extraction commissioning for Mu2e in 2025-2026 runs after g-2 reconfiguration. The work demonstrates concrete readiness for a flagship charged-lepton flavor violation search and aligns with broader intensity-frontier momentum. Evidence comes from two dedicated beam periods with quantified spill parameters.

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80.0% accuracy
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Next steps include ramping beam power to design levels and integrating the Mu2e detector for first physics data. Full operations are projected to begin once extraction efficiency exceeds 95 percent across extended spills.

⚡ Prediction

Mu2e: First physics-quality data taking with >10^12 protons per spill will begin by end of 2027 once extraction efficiency exceeds 90 percent sustained.

Sources (2)

  • [1]
    Primary Source(https://arxiv.org/abs/2606.25140)
  • [2]
    Supporting Source(https://arxiv.org/abs/2205.06326)