[Hallc_running] [New Logentry] RC summary, 10 April 2024

rafopar at jlab.org rafopar at jlab.org
Wed Apr 10 09:05:02 EDT 2024


Logentry Text:
--
Hello all,

There is not much to update in terms of data taking.
We only got less than half hours of beam yesterday during the swing shift.

At 08:00 meeting today it was reported that the main reason is the mismatch between injector and the accelerator, and the indication is that 
the issue is most likely is in the injector side, and it will need to reconfigured.

* They will hold internal meetings to plan the work, but it doesn't look like we will have a beam anytime before noon.

* Another suggestion by Jay Benesch to turn the Wien filter off, that will make it easier to setup the injector.
     From the Hall-C perspective, it doesn't impact much the physics, we should expect the new polarization to be around 82.8% (currently 85%)

* There will also be a downtime on Thursday for about 4-8 hours to prepare pass2 separator for Hall-A. During this downtime the polarity of the HMS will be reversed (to work for positrons)
* Friday Day shift the HMS polarization will be switched back (to electrons).

The RC meeting is at 11 am
https://jlab-org.zoomgov.com/j/1617015555?pwd=L09IQ216dml6ZmM5ODExVjFsMX...

Meeting ID: 161 701 5555

Passcode: 288953

---

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/4277393
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/hallc_running/attachments/20240410/57ebd619/attachment.html>


More information about the Hallc_running mailing list