Presentation is loading. Please wait.

Presentation is loading. Please wait.

Workshop on CMS irradiation sensor Qualification&Assurance 1 Final set of measurement for the irradiation quality assurance. What test do we need? EFFICIENT.

Similar presentations


Presentation on theme: "Workshop on CMS irradiation sensor Qualification&Assurance 1 Final set of measurement for the irradiation quality assurance. What test do we need? EFFICIENT."— Presentation transcript:

1 Workshop on CMS irradiation sensor Qualification&Assurance 1 Final set of measurement for the irradiation quality assurance. What test do we need? EFFICIENT NON-AMBIGUOUS Sensitive to problems Not too extensive, to show difficult statistical fluctuactions Thorough to check all important parameters!

2 Thorough to check all important parameters! EFFICIENT All paramaters: V_dep, I_TOT, Strip Parameter But only on a subsample of strips All measurements in one measurement run (if possible) Strip measurement only on 2 DC pads!

3 Not too extensive, to show difficult statistical fluctuactions or setup problems Problems with bonding or residuals of conductive rubber OR... could interfere with the measurement  one strange result, even explainable by feature of the setup could possibly dis-qualify a complete batch of sensors  e.g. CC @ conductive rubber remains:  ONLY sample of 10 strips! = FAST

4 Sensitive to problems RAMPS more information of the strip paramter (here after irrad)

5 Sensitive to problems RAMPS interstrip resistance

6 Calibration KA-Louvain IV & CV KA: Offset due to Add. 50pF (Iso-box)

7 Strip parameter ST teststructure calibration KA-Louvain Interstrip capacitance: KA 0.64pF (1 neighbour)Louvain 1.05pF (2 neighbours)

8 Future calibration Second calibration run Calibration with an irradiated teststructure Anealing curve as proposed by Alexander and and agreed with Louvain

9 FINAL SET proposal (to freeze) All measurements after 80 min @ 60°C and > 6h in the fridge All measurements @-10°C DIODE: –IV, CV (1MHz with guard on GND)  I_TOT, V_dep, C_TOT,  Minisensor or full sensor  IV, CV on diode (1kHz)  Strip measurements: all on 2 DC pads Rpoly, Cint, Rint, leakage current »for 10 strips »With a voltage ramp 1V/s [1-30V] 10V/s [40-600V]  For the beginning: full check for pinholes


Download ppt "Workshop on CMS irradiation sensor Qualification&Assurance 1 Final set of measurement for the irradiation quality assurance. What test do we need? EFFICIENT."

Similar presentations


Ads by Google