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=====Meeting Minutes February 3, 2012=====

===Present===

Zibi, Rachel, Mike, Suwat, Jack, Bill, Betty, Bec; Dan is sick

=====Updates=====

  * Bec: Miniball: O ring is being made, Andy Thulin is working on it
  * Ordered a wheeled cart and golf cover for it
  * Rachel: HiRA parts cleaned, Jimmy will assemble next week and show to Bill and Betty
  * Zibi: Room 127: new plan. Requested exhaust for pumps, eyewash, old HiRA source box behind door, food shelf outside.  The schedule says we should be moving mid-March
  * Lee/Alan's experiment: no updates on their electronics. Preamp boxes: Lee can build but we need to provide instructions, can use to put in our HiRA preamp boards between flanges and motherboard
  * Right now the preamp boxes are designed to connect the flange to the motherboard
  * don't want to remove HiRA preamps from motherboards
  * Do we have an appropriate flange in storage? It is likely.
  * Mike: correction to Z>2 particles using Tianxiao's light output formula. Looks good! Next need efficiency correction

=====Efficiency=====

===Jack's program:===
  * Pass the name of the chain.. the program plots theta vs phi
  * Program is designed for HiRA but should work for LASSA.
  * Makes filled bins =1
  * Project onto x (theta) axis, then scale by 1/sin(theta)
  * To get absolute efficiency, Jack will output instructions to manipulate to true efficiency.
  * Jack will update more next week.

===Zibi's efficiency calculations for Ca+Ca===
  * Looking at t/3He
  * Lab: now has energy cuts. Efficiency changes with energy: see more high-energy particles at smaller angles
  * Correction: area of bins/4Pi plotted by theta vs energy
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