The beam delivery for MLF user program which begun on October 16 was stopped around 20:00 of October 23rd because unacceptable temperature rise was detected at the heat exchanger of the helium refrigerator component in the cryogenics hydrogen system for moderators.
Recovery measures such as the purification of the helium refrigerator loop are already under progress.
For our sorry, however, it takes time to secure the performance of the helium refrigerator loop for the coming run cycles, so that the user program from October 24 to 7 am of November 1 has to be cancelled.
We deeply apologize all for inconveniences.
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