ExperimentFAQ: Difference between revisions

Revision as of 20:10, 12 July 2018

What is Mu2e trying to measure?
Mu2e is an experiment designed to measure the conversion of a muon into an electron (in the field of the nucleus) without the emission of the neutrinos. In the standard model, lepton conservation tells us that when a muon decays to an electron there should be an accompanying muon neutrino to conserve muon number in the decay and an anti-electron neutrino to conserve electron number.

What physics beyond the Standard Model could the experiment be sensitive to?
SUSY, etc. here for a test

Where did the idea originate? -- answer needed
testing

What competing and complementary measurements are being done by other experiments and what is the current best limit?
testing

Where do the muons come from?
testing

Why does the TS have two bends instead of one
The first bend separates positive and negative particles, negative goes up and positive goes down. In the middle section between the bends, upper part of beam goes through while lower part gets absorbed. Now the beam is primarily negative particles and it is slightly high. The second bend, realigns the beam by bringing it down to axis.

Why does the production target have fins?
The target heats up because of the proton beam. The temperature to which the target reaches is high enough to make the target sag. If part of the target is not on axis due to sagging, our pion and thereby muon yield is reduced. The fins add to rigidity (structural integrity) and increase radiative cooling.

If the field is only along the axis of the transport solenoid (TS) what makes the muons direction of motion follow the bends of transport solenoid (TS)?
From Lorentz Force law, we can see that the plane of rotation is always perpendicular to the magnetic field direction. As the B-field changes orientation, so does the plane of rotation and hence forth the direction of the muon as is goes through the TS.

What are the primary experimental challenges?
testing

How can I learn more about the experiment?
testing

HELP! What does that acronym mean?
Muon to electron

How is the Project organized?
testing

How is the Collaboration Organized?
testing

How do collaborators communicate?
testing

Where can documentation be found?
testing

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 {| class="mw-collapsible mw-collapsed wikitable"
-! style="background-color: white;" | Why does the TS have two bends instead of one ||
+! style="background-color: white;" | Why does the production target have fins? ||
 |-
-| colspan="2"| The first bend separates positive and negative particles, negative goes up and positive goes down. In the middle section between the bends, upper part of beam goes through while lower part gets absorbed. Now the beam is primarily negative particles and it is slightly high. The second bend, realigns the beam by bringing it down to axis.
+| colspan="2"| The target heats up because of the proton beam. The temperature to which the target reaches is high enough to make the target sag. If part of the target is not on axis due to sagging, our pion and thereby muon yield is reduced. The fins add to rigidity (structural integrity) and increase radiative cooling.
 |}