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Table of Contents

2012/03/03

Brief Descirption of Setup

Two DIBs have been mounted in a 1 cm iZIP style housing. Each DIB features two 51 pF capacitors: one capacitor is soldered between Qi and QET Return A; the other between Qo and QET Return D. One rigid vacuum side coax is attached to one of the DIBs. The other DIB is for the flexible side coax.

Figure 1: Assembled housing with 50 pF Capacitors.
Figure 2: Assembled Flexible Side Coax v1.
Figure 3: Assembled Tower with Flexible Side Coax v1.

The first version of the flexible side coax comprises of SCAB and SCHUBA boards that have been extracted from a rigid vacuum side coax. Six 6”-long, low noise copper wires (the same type as that used during Run 4) bridge the gap between pads on each board. Only charge pads (ie. pads 11-16) have been connected.

1830 Finally, after two days of banging head against a wall, created flexible side coax that passes electrical checks:
Table 1: Tower Level Continuity Checks.
Side Coax ZB1-1-9 Flexible v1
Tower Face 5 2
Qi Feedback-Qi Gate 25 nS 26 nS
Qi Feedback-Qi Bias <0.1 nS <0.1 nS
Qi Bias-Qi (at DIB) * 26 nS
Qo Feedback-Qo Gate 25 nS 26 nS
Qo Feedback-Qo Bias <0.1 nS <0.1 nS
Qo Bias-Qo (at DIB) * 26 nS
No shorts to ground!

* didn't check

1930 Begin tower installation procedure.
2050 Arghhh! I haven't connected QET Return A & D lines between SCAB and SCHUBA! We have to take the tower out.
2320 Tower removal procedure completed. Tower stored in clean room.