[Rgc] [New Logentry] RC Daily Summary, Oct 30th 2022.

[deurpam at jlab.org]

Logentry Text:
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Summary from Saturday-owl (10/29/2022) to Sunday-Owl (10/30/2022)

General Summary:
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Yesterday was a more productive day than the previous ones, although it did not start well: The beam became unacceptably trippy shortly after 9am. It took MCC about 10h to diagnose and fix the issue. No good data could be taken during that time. The problem was a too wide beam in the north linac scrapping and tripping the beam quality monitors. After many diagnostics and not finding the problem, the MCC crew chief cycled all the quads and that cured the problem. So the issue was a mismatched quad with wrong readout (no alarm were trigger) that compromised the beam transport. (It is not known at the moment what quad(s) was(were) mismatched or why.) After this, the beam delivery was good and we had efficient half-swing shift and owl shift of production on Carbon target. 

Yesterday's run efficiency was average, with an ABU of 12h (7am yesterday to 7am today).

Events accumulated (~7am yesterday to ~7am today):
474 M events.

Plan:
Production on carbon until Monday at 10am. Then target change from carbon to CH2.

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No RC meeting today.

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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/4073375
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