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== STM == | == STM == | ||
* Introduction of STM | |||
<math>R_{\mu e} = \frac{Neutrinoless\ \mu\ to\ e\ conversion\ (CLVF)}{All\ \mu\ captured\ at\ the\ Al\ stopping\ target }</math> | <math>R_{\mu e} = \frac{Neutrinoless\ \mu\ to\ e\ conversion\ (CLVF)}{All\ \mu\ captured\ at\ the\ Al\ stopping\ target }</math> | ||
<math>R_{\mu e} = \frac{\varGamma (\mu^- + A(Z,N) \rightarrow e^- + A(Z,N)) }{\varGamma(\mu^- + A(Z,N) \rightarrow \nu _\mu + A(Z-1,N) ) }</math> | <math>R_{\mu e} = \frac{\varGamma (\mu^- + A(Z,N) \rightarrow e^- + A(Z,N)) }{\varGamma(\mu^- + A(Z,N) \rightarrow \nu _\mu + A(Z-1,N) ) }</math> | ||
* Position of STM | |||
[[File:STMsignals.png|center|900px|left|thumb|Introduction of STM signals, X rays (347 keV )and gamma rays (844 keV and 1809 keV).]] | [[File:STMsignals.png|center|900px|left|thumb|Introduction of STM signals, X rays (347 keV )and gamma rays (844 keV and 1809 keV).]] | ||
[[File:STMPosition.png|900px|center|thumb|Position of STM in the Mu2e Hall.]] | [[File:STMPosition.png|900px|center|thumb|Position of STM in the Mu2e Hall.]] | ||
* STM Detectors | |||
Two detectors are used to measure the X rays and gamma rays generated by the stopped muons. One of them, the LaBr3 detector, is capable of high rate operation up to and above 800 kcps with energy resolution 0.7%. The other, the HPGe detector is capable of energy resolution of 0.1%, however its rate capability is limited to ∼70 kcps. | Two detectors are used to measure the X rays and gamma rays generated by the stopped muons. One of them, the LaBr3 detector, is capable of high rate operation up to and above 800 kcps with energy resolution 0.7%. The other, the HPGe detector is capable of energy resolution of 0.1%, however its rate capability is limited to ∼70 kcps. | ||
Revision as of 17:10, 17 June 2024
STM
- Introduction of STM
[math]\displaystyle{ R_{\mu e} = \frac{Neutrinoless\ \mu\ to\ e\ conversion\ (CLVF)}{All\ \mu\ captured\ at\ the\ Al\ stopping\ target } }[/math]
[math]\displaystyle{ R_{\mu e} = \frac{\varGamma (\mu^- + A(Z,N) \rightarrow e^- + A(Z,N)) }{\varGamma(\mu^- + A(Z,N) \rightarrow \nu _\mu + A(Z-1,N) ) } }[/math]
- Position of STM
- STM Detectors
Two detectors are used to measure the X rays and gamma rays generated by the stopped muons. One of them, the LaBr3 detector, is capable of high rate operation up to and above 800 kcps with energy resolution 0.7%. The other, the HPGe detector is capable of energy resolution of 0.1%, however its rate capability is limited to ∼70 kcps.
The plots of STM detectors in the shielding house can be found in the link below. [[ https://mu2einternalwiki.fnal.gov/wiki/STM_Offline | Link to validation plots of STM in the Mu2e Offline ]]
Details of the detector geometries and materials can be found in docdb-49130. Details of the detector resolution can be found in docdb-36803.