AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
DESPEC
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Entry time:
Sat Mar 29 11:26:25 2025
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> > Snout assembly > > DSSSDs > > Upstream 3208-10/3208-18/3208-20 > Downstream 3131-5/3131-10/3131-12 > > p+n junction side bias continuity checked OK for *all* wafers > all c. 22 Ohm as expected > > n+n Ohmic side bias continuity checked OK for both DSSSDs > upstream 73 Ohm, downstream 92 Ohm > > n+n Ohmic side bias wafer #2 > positioned at top of snout assembly ( lower stage snout side marked 'T' ) > > p+n junction side faces downstream > > > Distances > > Using top edge of lower stage snout as reference > > ref - middle of upstream bPlas 8.0cm > ref - upstream DSSSD 11.0cm > ref - downstream DSSSD 12.0cm > ref - middle of downstream bPlas 14.0cm > > Measurements consistent to +/-1mm between LHS and RHS of snout assembly as viewed from top side > > > 13.00 At this position the Kapton PCBs bulged in/out and there was some concern that when the upper stage > snout was installed it would the Kapton PCBs into the 'active' area. It was decided to move the 2x bPlas > and 2x DSSSDs c. 5mm downstream. > > Jeroen and Phillip cut sections from 4x PEEK 6mm spacers so that they would clip onto 3mm dia support rods. > > We raised the assembly fro the inter stage and inserted the modified spacers between the inter stage and > the other spacers above. The Kapton PCBs now run fairly straight to the DSSSD connectors. > > Distances re-measured as > > Using top edge of lower stage snout as reference > > ref - middle of upstream bPlas 8.6cm > ref - upstream DSSSD 11.5cm > ref - downstream DSSSD 12.4cm > ref - middle of downstream bPlas 14.5cm
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