Leakage current increases => noise increases
Capacitance increases => noise increases
(p-side) Punch-through biasing effective resistance decreases => noise increases
(n-side) Accumulation layer resistors increase in value => combined with high leakage current requires higher voltage to deplete detector
Leakage current
Note 1: ISIM 4 received no measurable radiation damage before repairs to a quadrupole were made on September 3rd)
Note 2: graphic shows current against time in order to allow for the time needed for the vertex detector to reach thermal equilibrium, since the current also varies with temperature
Note 3: initial "spike" due to charging of bias supply filter capacitors
