HpGe

General Overview
This pages is intended as a guide to help NPTool users to analyse data from the HPGe array at TAMU. The structure of the data branch and the convention used for the different segments will be presented.

GeTAMU Detector
The Germanium detector array is made of 4 clovers mounted in a "fan"-like set-up around the target. Each clover is composed of 4 identical crystals enumerated clockwise. Looking downstream, the crystals (1,4) will face the experimenter. Every Clover is globally segmented into 3 different regions along the beam axis. This segmentation is not within a crystal and is done with respect to the clover. The three regions are denoted Left, Middle and Right. Looking downstream the experimenter will face the "left" region, in other words the beam goes from Left -> Middle -> Right. In this case any energy deposited in the detector is read twice in two different composition, 4 cores and 3 regions giving a total of 8 detection zones that can be used for Doppler Correction. For a single event some combination of core/region are physically impossible. The "Middle" region covers a part of all the crystals, the "Left" region covers only crystals 1 and 4, and the "Right" region covers 2 and 3.

Convention in NPTool:
 * the regions are represented by numbers, for {Left, Middle, Right}={1,2,3}
 * same for the crystals = {1,2,3,4}
 * the table below shows the decomposition using the crystals and regions into 8 detection zones

Setting the configuration file (in progress)
Format of the configuration file to include GeTAMU:

GeTAMU GeTAMUClover CloverID= 1 R=     60 mm  Theta=  90 deg Phi=   45 deg Beta=   0 0 0  deg GeTAMU GeTAMUClover CloverID= 2 R=     60 mm  Theta=  90 deg Phi=  135 deg Beta=   0 0 0  deg

Analysis in the NPTool framework (in progress)

 * Analysis convention/philosophy
 * What is stored in the tree and what is not
 * What is done in the Analysed data (Physics class) and what is done in the outside program

Raw Data (in progress)
Brief description of the structure of data

Analysed Data (in progress)
List of the main functions used to get and set information (in progress)

Analysis functions (Add what you want!)
How Doppler correction is done.. etc...