Difference between revisions of "Data Rates"

From DUNE
Jump to navigation Jump to search
 
(27 intermediate revisions by 2 users not shown)
Line 1: Line 1:
 +
----
 +
----
 +
----
 +
----
 +
==<span style="background:yellow">This page has moved to the [https://wiki.dunescience.org/wiki/Data_Rates DUNE Wiki]</span>==
 +
----
 +
----
 +
----
 +
----
 +
 
= Disclaimer =
 
= Disclaimer =
'''This page is in initial stages of construction.'''
+
'''This page is under construction.'''
  
 
= Overview =
 
= Overview =
Line 17: Line 27:
 
== Reactions ==
 
== Reactions ==
  
&nu;<sub>e</sub>+<sup>40</sup>Ar &rArr; e<sup>-</sup>+<sup>40</sup>K<sup>*</sup>
+
&nu;<sub>e</sub>+{{Ar40}} &rArr; e<sup>-</sup>+{{K40}}<sup>*</sup>
  
anti-&nu;<sub>e</sub>+<sup>40</sup>Ar &rArr; e<sup>+</sup>+<sup>40</sup>Cl<sup>*</sup>
+
{{Overline|&nu;}}<sub>e</sub>+{{Ar40}} &rArr; e<sup>+</sup>+{{Cl40}}<sup>*</sup>
  
&nu;<sub>x</sub>+<sup>40</sup>Ar &rArr; &nu;<sub>x</sub>+<sup>40</sup>Ar<sup>*</sup>
+
&nu;<sub>x</sub>+{{Ar40}} &rArr; &nu;<sub>x</sub>+{{Ar40}}<sup>*</sup>
  
 
&nu;<sub>e,x</sub>+e<sup>-</sup> &rArr; &nu;<sub>e,x</sub>+e<sup>-</sup>
 
&nu;<sub>e,x</sub>+e<sup>-</sup> &rArr; &nu;<sub>e,x</sub>+e<sup>-</sup>
  
 
== References ==
 
== References ==
 +
=== SNB ===
 
* {{DocDB|6977|DocDB 6977}} - Software for low-energy signals
 
* {{DocDB|6977|DocDB 6977}} - Software for low-energy signals
 
* {{DocDB|8481|DocDB 8481}} - Summary of SNB Working Group Progress (February 2014)
 
* {{DocDB|8481|DocDB 8481}} - Summary of SNB Working Group Progress (February 2014)
Line 36: Line 47:
 
* approximately 100 events per kiloton, spread over ~30 seconds, ~½ in first second
 
* approximately 100 events per kiloton, spread over ~30 seconds, ~½ in first second
 
* all flavors, few tens of MeV
 
* all flavors, few tens of MeV
 +
 +
=== Other material ===
 +
* [http://arxiv.org/pdf/1403.3140%20pdf Measurement of the neutrino-oxygen neutral-current interaction cross section by observing nuclear deexcitation]
 +
 +
= Proton Decay =
 +
== References ==
 +
* [http://arxiv.org/abs/hep-ph/0407297 Very massive underground detectors for proton decay searches]
 +
* [http://arxiv.org/abs/hep-ph/0701101 Nucleon Decay Searches with large Liquid Argon TPC Detectors at Shallow Depths: atmospheric neutrinos and cosmogenic backgrounds]
 +
* [https://indico.fnal.gov/getFile.py/access?contribId=3&resId=3&materialId=slides&confId=9209 PDK at LBNF Meeting in Jan'15]
 +
 +
= Solar =
 +
== References ==
 +
* {{DocDB|6212|DocDB 6212}} - M.Smy's slides from 2012 (LBNE solar studies  potential)
 +
 +
= Backgrounds =
 +
== Background Sources ==
 +
=== References ===
 +
* {{DocDB|4482|DocDB 4482}} - Craig Thorn's summary of Ar properties
 +
* [http://arxiv.org/abs/astro-ph/0603131 Measurement of the specific activity of Ar-39 in natural argon]
 +
 +
=== Important radiologicals ===
 +
* {{Ar39}} 1.01 Bq/kg &beta;<sup>-</sup> End-point: 0.565MeV
 +
* {{Kr85}} 0.1-0.3 Bq/kg &beta;<sup>-</sup> End-point: 0.687MeV
 +
 +
== Plots ==
 +
=== Muon and Neutron Backgrounds ({{Cl40}}) ===
 +
[[File:Solar_bkg_1.png|700px]]
 +
 +
=== Summary Plots ===
 +
Caveat - in the plots below the neutron data reflect the number of neutrons, not tracks, hits or counts created by neutrons. TBD!
 +
[[File:BGRates.png|700px]]
 +
 +
 +
Same plot, but in large (5MeV) bins:<br/>
 +
[[File:BGRates_5MeVBins.png|700px]]

Latest revision as of 19:57, 18 December 2017





This page has moved to the DUNE Wiki





Disclaimer

This page is under construction.

Overview

According to the physics goals of the experiment, we need to consider the following main sources of signal:

  • The "beam neutrino" signal
  • The Supernova Burst (SNB) signal
  • Proton Decay
  • Solar neutrinos

All these signals have distinct energy scales, topologies and other characteristics. In terms of buffering and processing data in real or near time, they pose different requirements.

Beam Neutrinos

Because of the energy scale (~GeV range) neutrino interactions will be characterized by TPC signals well above radiological background. Zero-suppression will lead to significant reduction of data volume and rates (the detector will appear "empty" for the most part).

SNB

Reactions

νe+40Ar ⇒ e-+40K*

ν e+40Ar ⇒ e++40Cl*

νx+40Ar ⇒ νx+40Ar*

νe,x+e- ⇒ νe,x+e-

References

SNB

  • DocDB 6977 - Software for low-energy signals
  • DocDB 8481 - Summary of SNB Working Group Progress (February 2014)

Some reference curves from DocDB 6977:

SNB spectrum 1.png

In a nutshell:

  • approximately 100 events per kiloton, spread over ~30 seconds, ~½ in first second
  • all flavors, few tens of MeV

Other material

Proton Decay

References

Solar

References

  • DocDB 6212 - M.Smy's slides from 2012 (LBNE solar studies potential)

Backgrounds

Background Sources

References

Important radiologicals

  • 39Ar 1.01 Bq/kg β- End-point: 0.565MeV
  • 85Kr 0.1-0.3 Bq/kg β- End-point: 0.687MeV

Plots

Muon and Neutron Backgrounds (40Cl)

Solar bkg 1.png

Summary Plots

Caveat - in the plots below the neutron data reflect the number of neutrons, not tracks, hits or counts created by neutrons. TBD! BGRates.png


Same plot, but in large (5MeV) bins:
BGRates 5MeVBins.png