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.

U[V]	I[nA]		I[nA]
10		63.5		64.0
20		74.5		75.0
30		81.0		82.0
40		85.0		88.0
50		93.5		94.0
60		103.0		103.5
70		111.5		112.0
80		120.0		120.5
90		128.0		128.0
100		135.5		135.5
110		141.5		141.5
120		146.0		146.0
130		149.0		148.5
140		151.0		151.0
150		153.5		153.5