10G board

Pan-STARRS -- the Panoramic Survey Telescope & Rapid Response System -- is an innovative design for a wide-field imaging facility being developed at the University of Hawaii's Institute for Astronomy.

ANITA -- the Antarctic Impulsive Transient Array -- is a balloon-borne experiment which flew from McMurdo Station, Antarctica in Dec. 06 - Jan. 07,  Dec. 08 - Jan. 09, and will fly a 3rd time in Austral summer 2014-2015, and a proposal has been submitted to NASA for a 4th flight. Additional ASIC development for that flight will make extensive use of these tools.




University of Hawaii

Cadence University Program Member

ID Lab autumn 2019
Custom IC

Design of Application Specific Integrated Circuits are needed to address the severe instrumentation challenges of large scale Ultra-High Energy neutrino detectors and the harsh collision environment of the next generation "Super B Factory" experiments. These instruments also must survive in the hostile radiation environment of space. Application of techniques for making commercial fabrication processes "radiation tolerant" is also of tremendous interest to the high-energy physics research community, as higher collider Luminosities mean larger radiation backgrounds.

As a critical component of a future Super-B Factory detector, the Silicon Pixel detector group in the Physics department at the University of Hawaii is and will be fabricating prototype readout circuits to test the viability and radiation hardness of proposed readout electronics. Such effort is inspired and guided by similar projects being coordinated through the CERN research facility in Europe under the auspices of the RD-49 [RADTOL Collaboration].

A proposal for continuation of this work may be found here. Design of these test structures and ultimately of a monolithic device is enabled by use of the Cadence Custom IC Design tools.

This work is a follow-on to previously published studies on the benefit and challenges of such devices.


  • S.A. Leach et al., Nucl. Instr. Meth. A952 (2019) 161746.
  • D. Kotchetkov et al., Nucl. Instr. Meth. A941 (2019) 162342.
  • J.S. Lapington et al., Nucl. Instr. Meth. A876 1-4 (2017).
  • P. Orel et al., Nucl. Instr. Meth. A857 31-41 (2017).
  • J. Avva et al., Nucl. Instr. Meth. A869 46-55 (2017).
  • V.A. Li et al., Rev. Sci. Instrum. 87 021301 (2016).
  • A. De Franco et al., Proc. of Sci.  C15-07-30 (2015).
  • E. Oberla et al., Nucl. Instr. Meth. A735 452-461 (2014).
  • J. Va'vra et al., Nucl. Instr. Meth. A718 541-545 (2013).
  • H. Landsman et al., Nucl. Instr. Meth. A662 S54-S58 (2012).
  • D. Breton et al., Nucl. Instr. Meth. A629 123-132 (2011).
  • G.Varner, Nucl. Instr. Meth. A623 413-415 (2010).
  • K. Nishimura, et al., Nucl. Instr. Meth. A623 3297-299 (2010).
  • L. Ruckman, G.Varner, K. Nishimura, Nucl. Instr. Meth. A623 365-367 (2010).
  • Y. Arai et al., Nucl. Instr. Meth. A623 186-188 (2010).
  • L. L. Ruckman, G.S. Varner, et al., Nucl. Instr. Meth. A623 303-305 (2010).
  • M. Ablikim et al., Nucl. Instr. Meth. A614 345-399 (2010).
  • J-F. Genat, G.Varner, F. Tang, H.J. Frisch, Nucl. Instr. Meth. A607 387-393 (2009).
  • P. Allison et al., Nucl. Instr. Meth. A604:S64-69 (2009).
  • L. L. Ruckman, G.S. Varner, Nucl. Instr. Meth. A602 438-455 (2009).
  • H. Landsman et al., Nucl. Instr. Meth. A604:S70-75 (2009).
  • H. Hoedlmoser, G. Varner, M. Cooney, Nucl. Instr. Meth. A599 152-160 (2009).
  • G. Varner et al., Nucl. Instr. Meth. A591:534-545 (2008).
  • J. Benitez et al., Nucl. Instr. Meth. A595:104-107 (2008).
  • G.S. Varner et al., Nucl. Instr. Meth. A583:447-460 (2007).
  • G. Varner et al., Nucl. Instr. Meth. A 565 126-131 (2006).
  • E. Martin et al., "Hard X-ray SOI Sensor Prototype," 2nd Conference on PhD Research in Microelectronics and Electronics [PRIME], pp. 417-420 (2006).
  • L. Ruckman, G. Varner, S. Stanic, A. Koga and T. Tsuboyama, "Development and Implementation of a readout Module for Radiation Sensing Field-Effect Transistors," IEEE Trans. Nucl. Sci. 53 2452-2455 (2006).
  • G. Varner, "The Modern FPGA as Discriminator, TDC and ADC," Journal of Instrumentation, Volume 1, P07001 (2006).
  • Large Scale Monolithic Active Pixel Sensor [CAP3]
  • High Voltage Astronomical CCD driver ASIC
  • Pixel Detectors in a B-Factory Environment and thoughts on use in BELLE

RITC block

Real-time Independent Three-bit Converer (RITC)

Sampling Unit for Radio Frequency (SURF) board

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Questions about this page? Please contact varner@phys.hawaii.edu.

This page was last updated 6 June 2020.