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Time walk with the FE-I3 chip<br />
•Threshold triggered system<br />
•Difference between t and t gives the time walk<br />
•New bunch crossing every 25ns<br />
•Need to cross threshold within 20ns to be accepted<br />
•How much overdrive is needed to cross threshold within 20ns?<br />
ASIC<br />
settings<br />
sensors<br />
IP = 64<br />
IL = 64<br />
IP = 128 1<br />
IL = 96<br />
Measurements by E. Bolle, K. Einweiler, O.Rohne. Plots by C. Da Viá<br />
IL68 IP68 – STANDARD PLANAR SETTINGS: Analogue current=91mA., VDDA = 1.6V and VDD = 2.0V<br />
IL96 IP128- Analogue current=126mA (+38%) VDDA = 1.6V VDD= 2.0V<br />
IL64 IP192 Analogue current =158mA (+76%) VDDA = 1.6V VDD= 2.0V<br />
IP = 196 2<br />
IL = 64<br />
2E-A 1807e - 1119e - 813e -<br />
3E-G 2798e - 1828e - 1434e -<br />
4E-C 3338e - 2122e - 1597e -<br />
Planar 1244e -
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