UMN CDMS Wiki archive
start › cdms › k100 › run_diary › 20110525run013

Table of Contents

2011/05/25

2000 Puck removed from box, and crystal extracted from puck. Procedure was identical to that conducted at the start of Run 11.
Purged vessel at 5.5 psi on arrival on 11 May. Pressure has not dropped below this value in the time between arrival and venting today.

Crystal Inspection

2100 Perform quick visual inspection of electrodes.
Figure 1: No damage witnessed during visual inspection of electrodes.
g102crystalinspection1small.jpgg102crystalinspection2small.jpg
Larger image: 2048 x 1536 Larger image: 2048 x 1536
Figure 2: DIB1 (left) & DIB2 (right) wire bonds.
g102dib1wirebondssmall.jpgg102dib2wirebondssmall.jpg
Larger image: 2048 x 1536 Larger image: 2048 x 1536

Detector Checkout

2115 Detector level continuity check performed. See detector elog entries 1352 & 1357 for values measured at RSF.
Table 1: Detector level continuity checks
DIB 1 DIB 2
Signal Measured Measured
QET B 41.2 Ω N/A
QET C N/A 260 Ω
QET D N/A 1.36 kΩ
LED1 R forward 781 kΩ 776 kΩ
LED1 V forward 1.061 V 1.061 V
LED1 R backward <0.3 nS <0.2 nS
LED2 R forward 757 kΩ 756 kΩ
LED2 V forward 1.061 V 1.060 V
LED2 R backward <0.6 nS <1.2 nS
Qo(+ve)-Qi(-ve) 552 Ω 615 Ω
Qi(+ve)-Qo(-ve) 152 Ω 170 Ω

Data from Accelerometer

2250 Plug accelerometer into computer. Stop recording and download data.
Data available in csv format from here.
Table 2: Vertical red lines in Figures 3, 4 & 5 correspond to the following events from FedEx's website in chronological order (tracking no. 057573930010862):
Date Time [PST] Activity Location
May 5 2011 15:22 Picked up San Jose, CA
May 5 2011 20:13 Arrived at FedEx location San Jose, CA
May 5 2011 22:19 Left FedEx origin facility San Jose, CA
May 6 2011 02:19 Arrived at FedEx location Sacramento, CA
May 6 2011 08:16 Departed FedEx location Sacramento, CA
May 10 2011 14:43 Arrived at FedEx location St. Paul, MN
May 11 2011 01:50 At local FedEx facility St. Paul, MN
May 11 2011 03:42 On FedEx vehicle for delivery St. Paul, MN
May 11 2011 07:12 Delivered Minneapolis, MN
Figure 3: Pressure exerted on puck during its journey across the country as measured by the accelerometer.
Figure 4: Temperature of puck over the course of its voyage across the country as measured by the accelerometer.
Figure 5: G-force sustained by puck during its traumatic odyssey as measured by the accelerometer. The lines between the points have no meaning as the accelerometer recorded the acceleration when its trigger threshold of 2g was satisfied. They are present here to help your eyes.