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# EndErfc¶

## Description¶

This is a fitting function that makes use of the complementary error function for detector-tube calibration

The function $$f(x)=A \cdot erfc(\frac{B-x}{C}) + D$$ with the following constraints:

• $$D \geq 0$$

• $$f(x) = -2A$$ if $$A<0$$

## Properties (fitting parameters)¶

Name

Default

Description

A

2000.0

Half value at minus infinity minus half value at plus infinity

B

50.0

Mid x value

C

6.0

Width parameter

D

0.0

Minimum value - must not be negative

Categories: FitFunctions | Calibrate