ELOG CARME

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

CARME

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Tue Nov 10 12:25:29 2020

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The length of the wire needed was estimated with the aid of a scale image of the detectors in the CARME chamber and foam model pieces. Wire length estimated by simply cutting wire so that it &#39;fits&#39; the scale model and by taking coordinates of the end points of the longest sections of wire needed on the model and calculating a bezier curve to estimate wire length. Bezier curve calculated by inputting the endpoints of the wire and control points such that the wire comes out of the connector at the specified angle in the scale diagram. Figure 1&nbsp;shows the bezier curve (orange), distance between the endpoints (green) and the control point plot. The length of wire required by the bezier curve&nbsp;is approximately that of cutting wire to fit the scale model.&nbsp;

Two groups of harnesses are needed to be built, a short section which correspond to the top and bottom of the detectors, and longer sections needed for the sides of the detectors. Lengths of these wires is;

Short: 225 mm

Long: 285 mm

Wire is cut to length using a circular object with the required circumference. Wire is wrapped round the object and cut to give required length. Wire is then stripped, crimped and inserted into the connectors with the correct pin assignment. Inserting wire into connectors acts as a good quality check, as incorrectly crimped wires will not fit into connectors. Crimp is set to setting 12 for the male crimps and 10 for the female crimps. Wire stripper has to be cleaned of stripped ends often as it is liable to jam and wire must be inserted into stripper straight, else strip will clip some of the conductors in the wire.&nbsp;

As of 9/11/20 two harnesses (1 long, 1 short) have been constructed.&nbsp;

8 harnesses constructed and sent to DAresbury for cleaning 20/11/20

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