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Beam Operation Experience at Quantum Beam Project in STF

The 2014 TTC Meeting at DESY presented findings on the remarkable stability of Quantum Beam operations in KEK-STF, specifically highlighting that cavity performance remained unaffected during various earthquake events. Key results showed no change in radiation levels or cavity performance for MHI-12 and MHI-13. Although there were instances of modifications in cryomodule tests, operational performance remained consistently robust. Insights from cavity performance studies and RF conditioning status, along with future plans for high-power testing at STF-2 starting in 2015, were also shared.

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Beam Operation Experience at Quantum Beam Project in STF

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  1. Beam Operation Experience at Quantum Beam Project in STF Kirk TTC Meeting 2014@DESY

  2. The answer is… No change during “beam” operation in KEK-STFeven after many earthquakes!! MHI-12 and -13 were very stable in Quantum beam experiment TTC Meeting 2014@DESY

  3. But…. We have a few examples for change in Cryomodule test TTC Meeting 2014@DESY

  4. History of Cavity Performance in KEK-STF • Vertical Test in CW mode • Cryomodule Test in Pulsed mode

  5. Status of RF Conditioning for MHI-12 1500μsec 600μsec STF Cavity Group Meeting (2013/5/13)

  6. Status of RF Conditioning for MHI-12 1500μsec STF Cavity Group Meeting (2013/5/13)

  7. Status of RF Conditioning for MHI-12 1500μsec 600μsec STF Cavity Group Meeting (2013/5/13)

  8. Status of RF Conditioning for MHI-12 1500μsec STF Cavity Group Meeting (2013/5/13)

  9. Comparison of Radiation Level History MHI-12 MHI-13 The radiation level was never changed during the CM test.

  10. Cavity performance degraded by “Earthquake” during beam operation? TTC Meeting 2014@DESY

  11. Earthquake events at KEK-STF TTC Meeting 2014@DESY

  12. Log Trend in 12/Oct/2012 MHI-12 MHI-13 TTC Meeting 2014@DESY

  13. Log Trend in 24/Oct/2012 MHI-12 MHI-13 TTC Meeting 2014@DESY

  14. Log Trend in 31/Oct/2012 MHI-12 MHI-13 TTC Meeting 2014@DESY

  15. Log Trend in 7/Dec/2012 MHI-12 MHI-13 TTC Meeting 2014@DESY

  16. After these earthquakes, the cavity performance was never changed!! TTC Meeting 2014@DESY

  17. Cavity Performance for STF-2 TTC Meeting 2014@DESY

  18. In future… The high power test in STF-2 will start from 2015. TTC Meeting 2014@DESY

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