2014/3/25TTC Meeting Beam Operation Experience at Quantum Beam Project in STF Kirk.

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Presentation transcript:

2014/3/25TTC Meeting Beam Operation Experience at Quantum Beam Project in STF Kirk

2014/3/25TTC Meeting No change during “beam” operation in KEK-STF even after many earthquakes!! The answer is… MHI-12 and -13 were very stable in Quantum beam experiment

2014/3/25TTC Meeting We have a few examples for change in Cryomodule test But….

superconducting rf test facility History of Cavity Performance in KEK-STF  Vertical Test in CW mode  Cryomodule Test in Pulsed mode

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

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

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

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

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

2014/3/25TTC Meeting Cavity performance degraded by “Earthquake” during beam operation?

2014/3/25TTC Meeting dateTimeLevelOperation status Detuning direction MHI-12MHI-13 12/Oct/201213:573 Beam Tuning = ON] －－ 24/Oct/201216:052 Beam Tuning = ON] －＋ 31/Oct/201215:502 Beam Tuning = 30sec. ON ⇒ RF Off (manually)] －＋ 7/Dec/201217:184 LLRF study = 60sec. ON ⇒ LV Off (I/L)] －＋ Earthquake events at KEK-STF

2014/3/25TTC Meeting Log Trend in 12/Oct/2012 MHI-12MHI-13

2014/3/25TTC Meeting Log Trend in 24/Oct/2012 MHI-12MHI-13

2014/3/25TTC Meeting Log Trend in 31/Oct/2012 MHI-12MHI-13

2014/3/25TTC Meeting Log Trend in 7/Dec/2012 MHI-12MHI-13

2014/3/25TTC Meeting After these earthquakes, the cavity performance was never changed!!

Cavity Performance for STF /3/25TTC Meeting

In future… The high power test in STF-2 will start from /3/25TTC Meeting