Naomi is a sophmore at Columbia University with a major in physics. She has been using the computer program Garfield to simulate electrons drifting through xenon. With the computer simulations she tracks the paths of electrons in a range of electric fields from one kiloVolt per centimeter to ten kV/cm. She can then compute the number of photons created by the electron--as a function of electric field and starting position--using A.I. Bolozdynya's equation (NIMA 422 p314): nph= 70(E/p-1)xp where nph is the number of photons, E is the electric field in kV/cm, p is the pressure in bar and x is the length of the path in cm. She is also analysing the electrons' drift velocity, as well as transversal and longitudinal diffusion (in comparison with experimental data) in order to calculate the total multiplication factor.

email: nsk2006@columbia.edu

Shueb will be entering his final year at the Bronx High School of Science. This is his first such experience, and he will be studying the physics of Photo Multiplier Tubes (PMTs). The project hopes to culminate with data collection of scintillation light from liquid xenon, using an MCP-PMT. He will submit a report to the Intel Competition and various other competitions this fall.

email: icepic17@yahooo.com

Naresh Kumar, a physics major, is a rising sophomore studying at Columbia College. He is working primarily on: 1. He is studying the primary and proportional scintillation properties of light in LXe as a function of the electric field and the particles used in the LXe test chamber. He is also studied the working of this experiment and has learnt how to deal with different procedures of the experiment, for example Ð purification of Xenon, working of the gas system, operation of the chamber etc.
2. He has learned the process of data analysis and scientific computation. The major languages that he currently uses to analyse data include IDL, C++ and Visual Basic. In addition to data analysis, he has attempted to and has made a simulation program to determine the number of photons collected at the PMT for given energies of the events.
3. He has read and prepared summaries of technical papers that may be useful to the project.

email: nk2055@columbia.edu