Material distribution

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Material distribution

The material included in the simulation matches the amount and distribution in the beamline to an accuracy better than the 10% uncertainty in the actual amount of material present. The material in the simulation for the 1996 testbeam run including the prototype and all detectors in front of it is summarised in table 5.3.

Table 5.3: The amount of material in the simulation of the testbeam in 1996 measured in radiation lengths ( X₀) and absorption lengths ( $\lambda$ ).
Testbeam part X₀ (%) $\lambda$ (%)

5 TRT sectors 8.67 3.73

3 Silicon detectors 2.03 0.43

2 Beam chambers 2.00 0.48

3 scintillators 4.87 2.30

Air 2.10 0.86

Total 19.70 7.80

**Table 5.3:** The amount of material in the simulation of the testbeam in 1996 measured in radiation lengths ( X₀) and absorption lengths ( $\lambda$ ).
Testbeam part	X₀ (%)	$\lambda$ (%)
5 TRT sectors	8.67	3.73
3 Silicon detectors	2.03	0.43
2 Beam chambers	2.00	0.48
3 scintillators	4.87	2.30
Air	2.10	0.86
Total	19.70	7.80

Next: Calibrating the Monte Carlo Up: The modules in the Previous: TRT prototype

Ulrik Egede
1/8/1998