| Status | Run 76 finished |
| Setup | DCRC33(2)→HV control, NaI trigger signal → DCRCX(4) |
| | IVC closed and Turbo pumping for a while. No tower - this was just for a leak test. |
| 1330 | During group meeting, we discussed about the Am241 pallet source being protruding outside by about 1/16“ which means we need to press it against the detector housing when installed. Matt suggested to make rectangular block of 1/16” height which will be like a washer for the source and help avoid pressing it firmly with screws |
| 1429 | We went to the machine shop to make that rectangular block piece. We found a 0.09 inches Copper block which is little more than what we need(0.06 inches) but we decided to use it. The center hole is made with 7/16“ drill bit and the through hole for one screw is drilled with 5/64” (0.0785 inches) drill bit. Plan |
| | Finished part   |
| 1516 | Inspected the Y-motor wires to look for any wire breaks. No visible breaks. The 4 pins soldering work looks filmsy, so removed the Kapton tape to have a closer look |
| 1530 | Found Pin 1 wire broken at the tip where the wire is soldered onto the pin. Also found Pin 4 about to break off if pulled a little. |
| 1616 | Soldered the two pins Pin1 and Pin4 wire firmly onto the pins using solder material. Measured resistance between Pin1 and Pin2 to be 90.4 ohm and Pin 3 and Pin 4 to be 90.6 ohm. |
| 1645 | Tried moving the Y-motor using software. The Y motor-arm moved smoothly to desired location. will do more measurements tomorrow. |