Attached a picture of the germanium baseline in the morning 6/6/23.

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We change the pulser amplitude to have it in the spectrum at what seemed a good position (A=150 mV).

We put 133Ba, 60Co and 137Cs sources in the shielding and started run_2 at Mon 6 June 2023, 12:15.

The run was stopped at 16:01. (Note there will be two ROOT files in the folder: one (2_1 for DataR_run_xx.root) is the automatic backup at 15:01, when the 'tentative' calibration on CeBr90 was enabled).

GeBo FWHM at 1.33 MeV is quite bad: 6.4 keV.

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We searched again in 16O log for optimal DAQ parameters and found them. We thave hen used them to see any possible resolution improvement. Spectrum is saved as run_3.

CeBr90 FWHM at 1.33 MeV is 46.10 keV.

GeBo FWHM at 1.33 MeV is 5.37 keV------------>with same parameters, 16O elog reports 3.42058 keV (Feb2023): note that Ge baseline thickness now is approximately 5mV, while in 16O elog I have found 2mV as reference, or slightly more from picture attached to same entry 110 Nov22).

Note that lowering the threshold at the 'optimal' values, we are cutting Ge spectrum at roughly 300 keV (which should not be a problem for 23Na+p resonance scan).

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We have mounted the Tantalum backing from Edinburgh (last spare, cleaned on 20/03/23 at LNGS) on the target holder and closed the beam line. We have left run_4 overnight as background run.

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Ge cryocooler is at 80K and 92 W.