Mark's Sandbox

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TOF electronics chain


  • \gamma p\rightarrow X(2000)p
    • X(2000)\rightarrow b_{1}^{+}\pi ^{-}
      • b_{1}^{+}\rightarrow \omega \pi ^{+}
        • \omega \rightarrow \pi ^{+}\pi ^{-}\pi ^{0}
          • \pi ^{0}\rightarrow \gamma \gamma
  • \gamma p\rightarrow \omega p
  • \gamma \gamma \ {{\rm {mass}}}
  • \pi ^{+}\pi ^{-}\pi ^{0}\ {{\rm {mass}}}

\alpha \beta \gamma \delta \epsilon \eta

random text forming a paragraph

Suggested coordinate system for linear detector elements in a plane perpendicular to z.

Assume line direction is chosen to go in the positive $y$ direction. If the line is parallel to the x-axis, choose the positive direction to be the positive x direction. Then angle of inclination of the line is an angle $\phi$, 0 <= phi < 180. Unit vector along the line is lhat = xhat cos phi + yhat sin phi, the unit vector normal to the line (in the detector plane) is nhat = -xhat sin phi + yhat cos phi. In this way, lhat and nhat satisfy the right hand rule, i. e., lhat cross nhat = zhat.

  • here are some new bullets
  • as a test

<img src="https://halldweb1.jlab.org/wiki/images/5/5b/D00000-01-01-2000.png">

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