Author/Authors :
Evangelou، نويسنده , , I and Kokkas، نويسنده , , P and Manthos، نويسنده , , Konstantinos Prouskas، نويسنده , , C and Triantis، نويسنده , , F and Tzoulis، نويسنده , , N and Aspell، نويسنده , , P and Barney، نويسنده , , D and Bloch، نويسنده , , Ph and Kloukinas، نويسنده , , K and Peisert، نويسنده , , A and Reynaud، نويسنده , , S and Go، نويسنده , , A and Elsha، نويسنده , , V and Zubarev، نويسنده , , E and Cheremukhin، نويسنده , , A and Zamiatin، نويسنده , , N، نويسنده ,
Abstract :
Developing silicon strip sensors for the CMS Preshower detector we have noticed that some strips have a noise higher than the average and not correlated to a high leakage current. In order to investigate this effect we have developed a set-up for noise measurement on wafers and diced sensors that does not require bonding. The set-up is based on the DeltaStream chip coupled to a probe card. We have tested 45 sensors and found that the strips with an above average noise have a higher relative current increase as a function of voltage, ΔI/(IΔV). We also observed that, on these strips, the breakdown occurs within about 60 V from the voltage at which the noise is observed. We describe our measurement method and present the results.
Keywords :
Preshower , CMS , Noise , Silicon strips
