[Kimura and Yasui]
On March 17, we completed maintenance work on the duct-shield cryo-coolers for IXC and IYC.
Maintenance work on the duct-shield cryo-coolers for EXC and EYC is also scheduled to be completed by the end of this week.
We are planning to restart the duct-shield cryo-coolers starting March 23, which will also serve as a test run.
[Kimura and Yasui]
Parts replaced during maintenance work
1. Absorber in the helium compressor
2. Filter unit at the supply side
3. Gas replacement inside the cold head in accordance with SHI work procedures
4. Disassembly and maintenance of the valve unit at the SHI factory
5. Gas replacement in the compressor and flexible tubing
(1) Helium gas used: G-1 grade
(2) Filling pressure: 14.8 bar
[Kimura and M. Takahashi]
On March 18, we completed maintenance work on the duct-shield cryo-coolers for the EYC.
We are planning to restart the duct-shield cryo-coolers starting March 23, which will also serve as a test run.