Characterization of wired or prototype board
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Characterization of Wired-OR prototype board. Alberto Aloisio – Gianpaolo Carlino – Givi Sekhniaidze. 200 Wired-OR boards have been produced to be used in integration test in Frascati and cabling test at CERN. Prototype tested with unshielded 16 pole flat cable. Bench test results

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Characterization of Wired-OR prototype board

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Characterization of wired or prototype board

Characterization of Wired-OR prototype board

Alberto Aloisio – Gianpaolo Carlino – Givi Sekhniaidze

200 Wired-OR boards have been produced to be used in integration test in Frascati and cabling test at CERN. Prototype tested with unshielded 16 pole flat cable.

  • Bench test results

  • Comparison of pulse shapes on RPC

  • Statistical analysis on Cosmic Ray data

Lecce - RPC meeting


Fast or board tdr analysis

Fast-Or board TDR analysis

  • TDR test results:

    • Z0 = 107 Ohm

    • Lmin = 290ps

    • Lmax = 320ps

    • Line-to-line max skew is 30ps

Connectors’ through holes

Lecce - RPC meeting


Test setup

Test setup

Lecce - RPC meeting


Bench test results

Bench test results

  • Input pulses in the 5 to 25 ns range (ch.1)

  • Output pulse on the 100 Ohm load (ch.2)

Lecce - RPC meeting


Rpc signals without and with or

Selected pulses are acquired with a digitizing scope

Scope is triggered by cosmic rays

Signals from BML-D chamber equipped with final front-end boards with stretching capacitor

RPC signals without and with OR

Direct pulse

Wired-OR

Lecce - RPC meeting


Direct comparison

Typical RPC pulses with and without OR are superimposed

OR loading and multiple-reflection pattern sharpen the pulses

Width and amplitude are both preserved

Only few pulses acquired

Statistical analysis is required to evaluate the impact on detector performances

Direct comparison

Direct pulse

Wired OR

Lecce - RPC meeting


Statistical analysis on cosmic ray events 8 strip pairs

Efficiency measured in both cases are the sameVTH = -1.0 V, HV = 10400 V, e ~ 97%

Statistical analysis on Cosmic Ray events(8 strip pairs)

Direct pulse

Wired OR

Leading edge

Trailing edge

Width

Lecce - RPC meeting


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