Gabriele Chiodini's BTeV Beam Test Pages (BTeV password protected)
FPIX0 Scope pictures (Illustrating timing requirements and mistakes which can be made)
"FPIX0 Readout Controller" by Gustavo Cancelo, Sergio Zimmermann, and Guilherme Cardoso (draft dated March 12, 1999)
Here are I-V curves for two Seiko sensors, one pstop (ST-1) & one pspray (ST-2). Both sensors are mounted on inner boards & bonded to FPIX1's. For both sets of measurements, the n-side guard ring was floating.
Here are I-V curves for the two CiS sensors (mounted on inner boards & bonded to FPIX0's). The n-implant guard ring is connected to 0.6V. Before the sensor is fully depleted, current flows between the n-pixel implants and the guard ring.
For a period of time in August and early September, 1999, the bias current drawn by this sensor increased by about a factor of ten. We have no idea why. Click here to see the IV curve recorded on 8/27/99 (postscript)
Initial source tests (Sr-90) have been done for both the CiS ST-1 & ST-2 sensors. All bump bonds & FPIX0 channels are okay on the ST-2 (p-spray) sensor (More later on why FPIX0 rows 60-63 are not connected). The ST-1 has ~6 dead channels (probably bad bumps) & 1 noisy channel.
I-V and C-V curves are shown below for one of the silicon strip sensors which will be used in the beam telescope. The depletion voltage is ~30V, as can be seen from the C-V curve. The I-V curve does not have an obvious plateau starting at the depletion voltage.