There are now two types of "geometry" files, the old geometry from mass00v005 and the geometry from the Ugli release. For the ugli amasim release, the "geometry" file has been split into two files, the electrical file (containing info on pe/mV, caladc, noise rate, etc.) and the geometry file (containing information such as x,y,z, orientation, t0, etc.). On this page is the latest versions of both types of geometry files.
All of the geometry files availble on this page are based on omdb-00-20010611.amacalib.txt from the Amanda OMDB page. This means that x, y, z, caladc, and t0 are all (relatively) new. Additionally these also have the newest afterpulse probabilities in them (see the amasim page for details), and the newest afterpulse delays. The pe/mV values for strings 11-19 come from an analysis done by David Steele. For OMs whose pe/mV values could not be determined using this analysis (see the list of them here) the pe/mV value was determined from the caladc value using the average ratio of (pe/mV)/caladc (1.65 for string 11-13, 1.25 for strings 14-19).


Additionally, the electrical file contains information that has not been previously used by amasim. New with the ugli release is the modeling of the saturation of the SWAMP and simulation of VME and Camac TDCs (either first or last 16 edges are stored according to a flag set in the electrical file). These geometry files are set up using the new pulse shapes measured by Dr. Barwick in Feb 2000.
The ugli amasim release also allows the use of delayed pulse to determin the amplitude of a hit.
Below you will find the newest versions (as of 11/8/01) of the geometry and pulse files for the mass00v005 amasim and the ugli amasim for the year 2000.

Mass00v005 Amasim:(slightly out of date)

• Geometry file
• pulse file

Ugli Amasim:

• Geometry file
• Electrical file
• Pulse file (Version number must be >=2)

Here's a brief description of each pulse
The ugli amasim executable is backwards compatable, so it is possible to run with the old geometry file. If that is done, then ugli will use a default value of 4000 mV for the maximum amplitude and keep the last 16 edges of every OM.