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AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40

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Entry time:	Mon Mar 31 07:02:39 2025
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> Status of today's work to follow... > > ===F0=== > > Leak rate of the gas cell was found to be < 1 Torr / 3 hours. Cell was evacuated. > > With the present setup, probably none of the foils can be rotated in front of the target. > Impact will be evaluated later. > > ===F2=== > > F2 SSD was checked with alpha-2, and it's dynamic range was set to around ~210 MeV. > > F2 PPAC was checked with a mask using alpha-1. No anomalies were found. > > F2 chamber was opened and the sources / mask were removed. > > ===F3=== > > Kinematics calculations suggest we should use a total of seven 1.5 mm SSDs (2 at each telescope, plus the additional one for betas at zero degrees) > > F3 was vented and the masks were removed from PPACs. Covers were installed. > > Clear Pulse preamps were checked: > There are 6 good channels on the existing two > A third preamp was marked as non-functional in 2016.10, but we found it is the test channels that do not function. > > We quickly checked five CNS 1.5 mm SSDs with a 90Sr/90Y source in air. > The findings were consistent with the 7Be THM experiment evaluation of detector quality. > > We noticed on of the PSD feedthroughs is absent inside the chamber. It needs to be installed and checked. > > > ===NaI=== > > Unfavorable spectral features were removed from many detectors. > > Detectors are being tested one-by-one, as well as combinations of detectors and cabling, to search for the cause of problems. Encoding: HTML ELCode plain Suppress Email notification

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