Alvaro Chavarria

KICP Associate fellow, University of Chicago

Ph.D., Physics, Princeton University, 2012
Contact Information
Phone: (773) 702-7893
Location: ERC 487
Segment of a CCD image acquired by a DAMIC detector after an exposure on the surface during X-ray calibration. Each pixel is 15 um x 15 um. The high spatial resolution of the CCD allows for powerful particle identification.
I am interested in the detection of weakly interacting particles from extraterrestrial sources to understand both the properties of their interactions and their astrophysical or cosmological origin.

My background is in the measurement of low-energy (< 5 MeV) Solar neutrinos with the Borexino detector. I have also done work in preparation for the detection of the prompt neutrino burst from the next core-collapse Galactic Supernova.

Currently I am working with J. Zhou and Prof. Privitera on the DAMIC experiment, which aims to employ CCD technology for the possible detection of GeV-scale cold dark matter particles.

Ongoing Scientific Projects:
KICP Publications
2017 | 2016 | 2015 | 2014 | 2013 | 2012

Latest Journal Publications
  1. "Measurement of low energy ionization signals from Compton scattering in a charge-coupled device dark matter detector", Physical Review D, Volume 96, Issue 4, id.042002 (Aug 2017)
  2. "US Cosmic Visions: New Ideas in Dark Matter 2017: Community Report", arXiv:1707.04591 (Jul 2017)
  3. "A measurement of the ionization efficiency of nuclear recoils in silicon", Journal of Instrumentation, Volume 12, Issue 06, pp. P06014 (2017) (Jun 2017)
  4. "Measurement of low energy ionization signals from Compton scattering in a CCD dark matter detector", arXiv:1706.06053 (Jun 2017)
  5. "First Direct-Detection Constraints on eV-Scale Hidden-Photon Dark Matter with DAMIC at SNOLAB", Physical Review Letters, Volume 118, Issue 14, id.141803 (Apr 2017)
  6. "Measurement of the low-energy quenching factor in germanium using an 88Y/Be photoneutron source", Physical Review D, Volume 94, Issue 12, id.122003 (Dec 2016)
  7. "Search for low-mass WIMPs in a 0.6 kg day exposure of the DAMIC experiment at SNOLAB", arXiv:1607.07410 (Jul 2016)
  8. "The DAMIC dark matter experiment", arXiv:1510.02126 (Oct 2015)
  9. "Measurement of radioactive contamination in the high-resistivity silicon CCDs of the DAMIC experiment", arXiv:1506.02562 (Jun 2015)
  10. "First results from the DarkSide-50 dark matter experiment at Laboratori Nazionali del Gran Sasso", Physics Letters B, Volume 743, p. 456-466 (Apr 2015)
  11. "Damic at Snolab", Physics Procedia, Volume 61, p. 21-33 (n/a 2015)
  12. "The Electronics and Data Acquisition System of the DarkSide Dark Matter Search", arXiv:1412.2969 (Dec 2014)
  13. "Final results of Borexino Phase-I on low-energy solar neutrino spectroscopy", Physical Review D, Volume 89, Issue 11, id.112007 (Jun 2014)
  14. "Light yield in DarkSide-10: A prototype two-phase argon TPC for dark matter searches", Astroparticle Physics, Volume 49, p. 44-51 (Sep 2013)
  15. "Cosmogenic Backgrounds in Borexino at 3800 m water-equivalent depth", Journal of Cosmology and Astroparticle Physics, Issue 08, article id. 049, (2013) (Aug 2013)
  16. "Measurement of geo-neutrinos from 1353 days of Borexino", Physics Letters B, Volume 722, Issue 4-5, p. 295-300 (May 2013)
  17. "High precision 7Be solar neutrinos measurement and day night effect obtained with Borexino", Nuclear Instruments and Methods in Physics Research A, Volume 692, p. 258-261 (Nov 2012)
  18. "Measurement of CNGS muon neutrino speed with Borexino", Physics Letters B, Volume 716, Issue 3-5, p. 401-405 (Oct 2012)

Latest Conference Proceedings
  1. "The DarkSide Program", Roma International Conference on Astroparticle Physics 2014 (RICAP-14), Noto, Italy, Edited by P. Piattelli; A. Capone; R. Coniglione; G. De Bonis; M. De Vincenzi; C. Distefano; A. Morselli; P. Sapienza; EPJ Web of Conferences, Volume 121, id.06010 (Jul 2
  2. "Measurement of radioactive contamination in the CCD’s of the DAMIC experiment", Journal of Physics: Conference Series, Volume 718, Issue 4, article id. 042057 (2016) (May 2016)
  3. "The DAMIC dark matter experiment", Proceedings of the 34th International Cosmic Ray Conference (ICRC2015). 30 July - 6 August, 2015. The Hague, The Netherlands. Online at, id.1221 (Jul 2015)