Revision as of 17:37, 19 January 2012

Rate Estimates


IAC apparatus for positron production experiment	Counts observed when the dipole is tuned to direct positrons onto the Ta target	Counts from electrons on Ta target

HpGe observed about 1 annihilation photon per 10 microCoulombs of electrons on the upstream Tungsten target
Ratio of annihilation photons observed when using positrons to electrons 120 to 10

Assume a 2 mm thick Tungsten target that is 1" square

The target is located at -80 < Z < -80.2

The NaI crystal is 2.32" or 56.49 mm in diameter

The NaI crystal is 8" from the target then the opening angle is atan(2.32/8/2) = 8.25 degrees

@@ Line 15: / Line 15: @@
 | Condition	|| Grade Calculation
 |-
-| If all Homework is complete and Simulation project is turned in on time	|| (50%) Homework + (50%)(Simulation Project)
+| Electron Beam Energy	|| 10 MeV
 |-
-| If 1 homework set is incomplete or more than 48 hours late	|| (60%)Homework + (40%)(Simulation Project)
+| Peak current	|| 40 mA
 |-
-|Otherwise	||(70%)Homework + (30%)(Simulation Project)
+| Pulse width	|| 10 MeV
+|-
+| Electron Beam Energy	|| 10 MeV
 |-
 |}