Aerogel Read out Electronics. K. Ozawa, N. Kurihara, M. Inaba, H. Masui T. Sakaguchi, T. Matsumoto. Concepts of readout electronics. The electronics of the Aerogel detector is based on RICH’s. New (Already tested at KEK). Exactly same as RICH. Signal cable RG174 1.5~3.5 m. Multi
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K. Ozawa, N. Kurihara,
M. Inaba, H. Masui
T. Sakaguchi, T. Matsumoto
The electronics of the Aerogel detector is based on RICH’s.
New (Already tested at KEK)
Exactly same as RICH
UL2833 7 m
320ch of inputs.
5 transition cards.
Integrate 8 multi coaxial cables
in one board.
8 preamp circuits are on one board.
20 boards are in one side.
Final Prototype Test
1 p.e. peak
Each LV is fused.
Integration of the preamplifier card
Schematic view of the preamplifier box
UL2833 x 20
RG-174 x 160
Location of preamplifier
1 DCM channel/ one sector
Concepts of cabling
Here are some test pulse picture from pulse generator.
Lower Graph is difference of integrated charge from RG174 and RG58.
At the Aerogel counter, length of signal cable is from 1.5m to 3.5m.
In this length, RG174 is not so much different from RG58.
RG174 is enough cable.
Input pulse ~ 3 pe
Input pulse ~9 pe
There is a little attenuation,
but it’s not a problem.
The ratio of output charge over input charge
Pulse shape of input and output after the cable
1div = 2mV
1div = 20mV
Shape of signal (10 pe) and cross talk
Schematic view of test setup
Block diagram of Aerogel FEE