Standard Daughter Board


The detector board accommodates two ASIC chips to read detector signals, a temperature sensor placed close to the chips and the fewest additional components. A 5V supply level is sent from the mother board. This supply level is regulated by two LDO (Low Drop Out) linear regulators for obtaining the dc supply levels required by the readout chips (2.5 V) and the buffer stage (3.3 V). The detector high voltage power supply is supplied directly to the detector board. This supply level is decoupled prior to the detector. 


For this system the ASIC chip analogue output onto one port is used. In this case the analogue front-end pulse signal is sampled into the pipeline with the frequency of the ASIC chip clock (40 MHz). The peak voltage of the front-end pulse signal is proportional to the collected charge at the detector channel, the peak time of this signal is about 25 ns (depending on the load capacitance among other parameters) and the remainder of the peak voltage after 25 ns is below 30% (i.e. the ratio between the signal voltage 25 ns after the peak and the peak voltage). Therefore, a 65–70 ns pulse length is considered in order to reconstruct the pulse. For reading out a particular position of the pipeline, a pulse of 25 ns (TRIGGER) is generated by the mother board. This pulse is sampled with the falling edge of the readout chip clock (CLK). The analogue pipeline latency has been fixed to 128 clock cycles, so this TRIGGER pulse is generated 128 CLK cycles after a particular front-end signal point has been sampled and stored in the pipeline. For the laser setup, the TRIGGER pulse is generated for each event (i.e. laser pulse) with a delay programmed by the user regarding the event occurrence. For the radioactive source setup, the TRIGGER pulse is generated with a fixed delay regarding the event occurrence (i.e. a particle crossing the detector) and a time stamp for each event is obtained with a TDC in the mother board. Therefore, just one sample of the analogue pipeline is required per event in both setups. The pulse shape can be reconstructed by acquiring enough number of events.

The Standard Daughter Board is shippped with:

  • 1 populated Daughter Board with fanins
  • 2 detector boards
  • 6 extra fanins


 Trigger Board


  • Based on silicon diode sensors
  • One or two diode coincidence triggers
  • Includes coincidence logic and threshold adjustment
  • High rate (20 KHz)
  • Inputs: 5V and sensor bias (20-30V)
  • Output: TTL Trigger pulse
  • Compatible with Alibava MB input to start data acquisition
  • Assembly matching with Alibava DB
  • Custom design available on request


Autotrigger Daughter Boards


  • Self trigger generated by the ASIC chip
  • Custom design
  • Pitch adapters available on request
  • Different geometries of the sensors
  • Double sided sensors


  • Photon detection
  • Nuclear physics
  • Neutron detection (with suitable conversion layer) 



Custom Daughter Boards


Apart from the Standard Daughter Board, in case it does not cover your specific needs, we also offer customized designs.

For this, we have pitch adapters available on request and we can also make designs for different geometries of the sensors, double sided sensors, wire-bonding or high density connectors, and we can also make multi-chip boards for larger number of channels.

Tell us your specific needs and we will provide a solution!

You can see different examples of custom daughter boards in the following images:



custom-daughter2-500  custom-daughter4-500 
 custom-daughter3-500  custom-daughter5-500


Custom Systems Engineering




Detector Development




Compact Tracker Telescope





      Edifici Eureka 
      Av. Can Domènech s/n
      Campus UAB
      08193 Bellaterra (Barcelona)
      Phone: +34 932 222 777

      +34 935 868 832

      Mobile: +34 610 202 271



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