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Message ID: 705     Entry time: Fri May 30 20:47:47 2025
Author: JM, CB, NP 
Subject: Run 36 

21:47

Run 36 started.

D+ beam deuterium target. D+ beam energy is 2 MeV/u.

Target density is about 1.6e12 at/cm2. FLuctuations between 1e12 and 1e13 at/cm2.

Detectors are now IN with the servo motors only. Detectors are stationary.

Left potentiometer = 36.54 mm

Right potentiometer = 37.96 mm

Ring cycle time is 1 minute. Note we see some hydrogen in in the spectrum, this disapears after a few seconds.

Target T1=30K, T2=31.9K.

Nozzle position x=-3.12, z=1.72 mm

YR09-Etarget pressure = 2.29e-10 mbar.

Cooler set value = 1126V, 15 mA. Read value = 1068V, 13.22 mA

Detector 4 is still a bit unstable in its leakage current but the data coming through looks good. Some crap is periodically written to disk when leakage current spikes.

We will run like this for an hour then move detectors back out for overnight run.

after 1 hour of beamtime we stop.

Attachment 1 - xy plot

Attachment 2 - energy histogram NUCLEAR

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