Attached is the UI diagram of the new double-sided silicon strip detector (DSSD). [Micron W1, ID: 3305-9]
It was taken during the internship of Emily Voigt and Rebanna Klawitter.
Conditons:
- DSSD in dark test chamber
- under atmosphere pressure
- no alpha source or similar
Analysis:
The current is roughly linear with voltage up to values of about 110-120V. After this point the current increases more slowly, kind of a plateau.
The comparison to an older measurement [https://elog.gsi.de/esr/E127/292] with another, identical DSSD is not fully understood. No plateau seems to reached in the range up to 150V. The currents are also significanlty higher.
Conclusion:
Save operation is possible up to 100V.
Voltages above 100V should only be used in case of ion damage and related performance losses. |
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Thu Jan 26 14:36:33 2023
@author: macbook
"""
import matplotlib.pyplot as plt
plt.style.use('bmh')
plt.rcParams["figure.figsize"] = (10, 5)
Datei = open('Si_U_I_curve.txt')
inhalt = Datei.read()
zeilen = inhalt.split('\n')
tabelle = []
for zeile in range(len(zeilen)):
spalten = zeilen[zeile].split(';')
tabelle.append(spalten)
tabelle[zeile][0:] = [float(zahl) for zahl in tabelle [zeile][0:]]
y1 = [zeile[1]/1000 for zeile in tabelle]
y2 = [zeile[2]/1000 for zeile in tabelle]
y_alt = [0.11, 0.13, 0.15, 0.17, 0.19, 0.21, 0.22, 0.23, 0.25, 0.27, 0.29, 0.31, 0.33, 0.35, 0.37]
x = [zeile[0] for zeile in tabelle]
plt.plot(x,y1, label='26.01.2023, 3305-9')
plt.plot(x,y2, label = "26.01.2023, 3305-9" )
plt.plot(x,y_alt, label = "28.04.2021, 3305-11")
plt.xlabel("U [V]")
plt.ylabel("I [$\mu$ A]")
plt.legend(loc= "upper left")
plt.savefig('Praktikum_U_I.pdf', dpi=500)
|