Pre-Qualification results
for module M-O-040
20220240100028
06.2003
Richard Bates, Sasha Tcheplakov, John Melone, Christian
Shaw
Tests:
Electrical Characterisation
Apparatus
- Valencia test box
- Standard mustard VME testdaq and AREO cards
- SCT LV3 with screen connection to Vdd return via 10nF capaciator for all
tests
- KEK choke
- Standard twisted pair cable with kitchen foil screen connected at each end
to screen connection of D25 plug
- Module Box and Cable Screen connected to Digital Return on AERO patch card
All tests performed with the Pseudo-Optical readout chain of the AREO card.
Chiller set to 0oC for all tests. This corresponded to a
temperature of 19oC on the hybrid. Before kaptons were attached, the
DC electrical connection between the hybrid and module box was measured to have
a resistance of 0.4Ohms. The module was held on the cooling point with a nut
screwed finger tight into place by hand, no torque was recorded.
Note that for the electrical results correction has not been done at present
for the variation in the calibrate capacitor.
Results
Measured 24/06/2003 unless otherwise stated.
Typical module
conditions during measurement of:
Vcc |
3.5 V |
Icc |
940 mA |
Vdd |
4.0 V |
Idd |
580 mA |
Vdet |
100.0 V |
Idet |
8.39 uA (see note below) |
Thyb |
19.0 oC |
- IV curve (4/07/2003) See note below ( ps
/ pdf
)
T=21oC: Vdet = 150V;
Idet = 1.168 uA; Vdet = 350V; Idet = 1.414
uA;
Corrected to T=20oC: Vdet = 150V;
Idet = 1.07 uA; Vdet = 350V; Idet = 1.29 uA
- Trimrange ( ps
/ pdf
)
- ResponseCurve ( ps
/ pdf
)
- NoiseOcc ( ps
/ pdf
)
- NoiseOcc S-Curves ( ps
/ pdf
)
- TimeWalk ( ps
/ pdf
)
Results
file
- Module Performance summary:
- Average front-end input noise, Link0 = 1510e, Link1
= 1484e, Module = 1497e;
- Average gain, Link0 = 51.3 mV/fC, Link1 = 52.6
mV/fC, Module = 52.0 mV/fC;
- Average threshold variation (for TrimRange 0), Link0
= 1.31 mV, Link1 = 1.32 mV
- Noise Occupancy, Link0 = 1.34x 10-5,
Link1 = 7.88x 10-6, Module = 1.06x 10-5
- Average front-end input noise from Noise Occupancy, Link0 = 1472e, Link1 = 1439e, Module = 1456;
- There are a total of 19 masked channels on the module
- 2 unbonded channels on Link0
- 0 unbonded channels on Link1
- 1 untrimable channel on Link0
Note:
The module has had over 1 month of handling. The module underwent a minor piece
of re-work on the chip to fan-in bonds prior to the final set of electrical
measurements. This re-work degraded the detector characteristics. The IV curve
of the module prior to the last set of measurements was considerably better than
that used for the final set of results. The cause of the degradation in the IV
characteristic is not clear at present and will be investigated. No visual
defects have been spotted.
On the 4/7/2003 a new IV measurement was performed on the module at
20oC after the detectors were cleaned. The current characteristics of
the module had returned to be within specification.
Results prior to re-work are:
Measured 19/06/2003
- Vdet=120V; Idet = 1.4uA, T = 35oC
- Vdet=120V; Idet = 0.23uA, T = 11oC
- Trimrange ( ps
/ pdf
)
- ResponseCurve ( ps
/ pdf
)
- NoiseOcc ( ps
/ pdf
)
- NoiseOcc S-Curves ( ps
/ pdf
)
Results
file
- Module Performance summary for T=11oC:
- Average front-end input noise, Link0 = 1387e, Link1
= 1353e, Module = 1370e;
- Average gain, Link0 = 53.6 mV/fC, Link1 = 55.6
mV/fC, Module = 54.6 mV/fC;
- Average threshold variation (for TrimRange 0), Link0
= 1.48 mV, Link1 = 1.71 mV
- Noise Occupancy, Link0 = 1.08x 10-5,
Link1 = 4.43x 10-6, Module = 7.63x 10-6
- Average front-end input noise from Noise Occupancy, Link0 = 1416e, Link1 = 1369e, Module = 1393;
- There were a total of 23 masked channels on the module
Operation at 11oC
The module was tested at the
operational temperature. The cooling fluid used was at a temperature of
-11oC which gave a hybrid temperature of 11oC. The module
was tested in a valencia test box flushed with nitrogen gas. The valencia test
box was instrumentated with a humidity sensor. The humidity inside the box
remianed below 10% during all tests. The module was tested prior to the final
rework (described above) and the results are shown above.
Thermal Cycling
The module was surveyed before thermal cycling at
Manchester during assembly and at Liverpool after assembly. The results are
avaliable as a excel
spread sheet or pdf.
The module underwent 10 cycles from +35oC to 30oC
inside an environmental chamber, in accordance to the forward QA documentation.
The temperture and humidity of the module box and the environmental chamber and
the dew point of the air in the module box were plotted as a function of time.
The module is waiting to be taken to liverpool for surveying.
Page maintained by Richard
Bates
Last modified: 25 June 2003