Abstract
The uniformity of discriminator threshold and the precision of internal delay have been studied on single 'Omega3/LHC1' pixel readout chips and on arrays of 24 chips containing 48768 active pixels. On single chips we measured a threshold variation of 400e- r.m.s. for a mean threshold setting of 4000e-. The internal delay distribution shows a standard deviation of 6 ns on a single chip and 16 ns on the large arrays, after applying a 3-bit delay adjustment. These results, obtained using an electrical stimulus, were confirmed by tests in a beam of high-energy particles.
| Original language | English |
|---|---|
| Pages (from-to) | 119-128 |
| Number of pages | 10 |
| Journal | Nuclear Inst. and Methods in Physics Research, A |
| Volume | 409 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - May 21 1998 |
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