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Rn emanation measurements of xenon recirculation pumps
| ID | Sample | Description | Rn emanation rate [mBq] | Used in XENON1T | Comment |
|---|---|---|---|---|---|
| #20 | QDrive pump 2S132CX | Serial no. C204 | 5.2 ± 0.2 | No | |
| #20a | QDrive pump 2S132CX | Serial no. C204 after repair | 2.5 ± 0.1 | Yes | |
| #21 | QDrive pump 2S132CX | Serial no. C205 | 3.5 ± 0.2 | No | |
| #22 | QDrive pump 2S132CX | Serial no. C206 | 4.5 ± 0.2 | Yes | |
| #23 | Magnetically coupled piston pump [24] | 0.29 ± 0.09 | Yes | Replacing all QDrive pumps | |
