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Figure 12
The EBC vacuum chamber pressure increases rapidly by more than one order of magnitude in 5 min if all the compressors are turned off with 200 mA in the storage ring, most likely from the desorption of hydrogen and nitrogen above 8 K. A pressure monitor (cold cathode) is located downstream of the EBC and true pressures internal to the EBC are likely to be one order of magnitude above those measured here. The lifetime drops extremely rapidly to less than 5 h within 5 min.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 4| July 2025|
https://doi.org/10.1107/S1600577525003418
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