Using the periods of beam current scanning earlier today, in stable conditions, several IDX detectors in the Southwest part of the machine were evaluated for their linearity. First plot shows few NDX responses to changing beam current, function of the current, in the log-log scale. As a system of detectors, they cover the dynamic range of the dose rates of 4-5 orders of magnitude around the machine. In agreement with original calibrations, the detectors show good linearity from about 1 R/h to few kR/h dose rates.
Study began at 14:55 with tune beam
14:58 5C11 tune beam scan with gain of 1
15:00 5C11B tune beam scan with gain of 1
15:05 5C11B tune beam scan with gain of 8
15:08 5C11 tune beam scan with gain of 8
Crane driving by made the cavities in the south linac have a moment
15:15 5C11 tune beam scan with gain of 32
15:18 5C11B tune beam scan with gain of 32
15:19 5C11 tune beam scan with gain of 64
15:21 5C11B tune beam scan with gain of 64
15:25 5C11 200 nA CW beam scan with gain of 1
15:27 5C11B 200 nA CW beam scan with gain of 1
15:29 5C11 200 nA CW beam scan with gain of 8
15:31 5C11B 200 nA CW
| Shift | Owl |
|---|---|
| CEBAF Program | |
| MCC Crew Chief | Deir |
| MCC Operators | Samari, Smith |
| Program Deputy | Latosky |
| Announcements |
