Energy calibration of germanium detectors for the Majorana Demonstrator
Journal Article
·
· Journal of Instrumentation
The Majorana Demonstrator was a search for neutrinoless double-beta decay (0νββ) in the 76Ge isotope. It was staged at the 4850-foot level of the Sanford Underground Research Facility (SURF) in Lead, SD. The experiment consisted of 58 germanium detectors housed in a low background shield and was calibrated once per week by deploying a 228Th line source for 1 to 2 hours. The energy scale calibration determination for the detector array was automated using custom analysis tools. We describe the offline procedure for calibration of the Demonstrator germanium detectors, including the simultaneous fitting of multiple spectral peaks, estimation of energy scale uncertainties, and the automation of the calibration procedure.
- Research Organization:
- Duke University, Durham, NC (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); North Carolina State University, Raleigh, NC (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); University of North Carolina, Chapel Hill, NC (United States)
- Sponsoring Organization:
- USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Organization:
- The Majorana Collaboration; The Majorana collaboration
- Grant/Contract Number:
- 89233218CNA000001; AC02-05CH11231; AC05-00OR22725; AC05-76RL01830; FG02-97ER41020; FG02-97ER41033; FG02-97ER41041; FG02-97ER41042; SC0012612; SC0014445; SC0018060; SC0022339
- OSTI ID:
- 3003293
- Alternate ID(s):
- OSTI ID: 2005828
OSTI ID: 2229283
OSTI ID: 2280631
OSTI ID: 2281978
OSTI ID: 2294168
OSTI ID: 3010239
- Report Number(s):
- LA-UR--21-27784; PNNL-SA--165183
- Journal Information:
- Journal of Instrumentation, Journal Name: Journal of Instrumentation Journal Issue: 09 Vol. 18; ISSN 1748-0221
- Publisher:
- IOP PublishingCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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47 OTHER INSTRUMENTATION
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Analysis and statistical methods
Atomic
Nuclear and Particle Physics
Double-beta decay detectors
Gamma detectors (scintillators
CZT
HPGe
HgI etc)
LEGEND
Majorana
Pattern recognition
cluster finding
calibration and fitting methods
calibration and fitting methods
cluster finding
double beta decay detectors
energy calibration
gamma detectors (scintillators
CZT
HPGe
HgI etc)
germanium detector
pattern recognition
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Analysis and statistical methods
Atomic
Nuclear and Particle Physics
Double-beta decay detectors
Gamma detectors (scintillators
CZT
HPGe
HgI etc)
LEGEND
Majorana
Pattern recognition
cluster finding
calibration and fitting methods
calibration and fitting methods
cluster finding
double beta decay detectors
energy calibration
gamma detectors (scintillators
CZT
HPGe
HgI etc)
germanium detector
pattern recognition