To summarize, the calorimeter rejection power for background tracks in the positive strangelet search is 1/72,000 or better, and the strangelet calorimeter analysis efficiency is 42%. These are adequate for the sensitivity goals of the positive strangelet search which is the most demanding of the charged particle studies in the experiment.
The analysis algorithm used is simpler than that which will be used in the actual experiment, but serves to give conservative limits to the calorimeter efficiency and rejection power. In the real analysis we will use the information provided by the hodoscope and wire chamber systems to help untangle the calorimeter pattern. Also, we will do a more elaborate fit to the calorimeter data to extract the pattern of energy deposits in the vicinity of the candidate hit.
It is perhaps worth mentioning that the excellent rejection power of the calorimeter is directly related to the simultaneous measurement of both the energy deposit and the time at which the deposit occurred in each tower. The good timing property of the spaghetti calorimeter design, along with its tower geometry, hermeticity, and good energy resolution, make it the overwhelmingly preferred choice for the E-864 calorimeter design.