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CAP3 Description Setup Description Results/Updates

CAP3 CHARACTERISTICS and DOCUMENTATION (NEW!!!!!)

CAP3 is a particle detector based in pixel structure. Each pixel has a size of 22.5x22.5 um^2. The total size of complete sensor is based in a 928 columns x 128 rows (2.088cm x 0.288 cm)

The detector structure is based in a 3T, using a reset transistor with tunable gate voltage (controlled by Areset), a source follower and a current bias(controlled by Refbias).

Every single pixel has 10 storage cells, divided in 2 different paths (controlled by signals s0 and s1 for the pre-trigger sampling and the post-trigger sampling, see schematics). There are 5 storage cell in every stage, controlled by signals ssx(0-4) and cpsx(0-4). The initial signal ssx controls the storage of the signal in a capacitance formed at the gate of a transistor. The second signal cpsx allows the readout in the common bus line. The readout architecture is based in a common source configuration using a current-source load. The current source load is shared for all the line. Every single pixel will have 2 output lines (coming form s0/s1)

To read out the signal there are a few importAnt signals:

CAP3 BEAM TEST BOARD (NEW!!!)

The information related to the beamtest board is the following:

ANALOG VALUES USED

Vdd=2.5V

The values defining the performance of the sensor is Areset, Obias. In case of August 2006:

TOM ZIMMERMANN TEST ANALYSIS MARCH 2006