all channels that appear as dead have pinholes, except channel #268 (shorted bond)

Gain M5T50001-ST0: no bias

0

1

2

3

4

5

6

7

8

0 64 128 192 256 320 384

Channel #

Ou

tpu

t [m

V/f

C]

All channels that appear as dead have pinholes,except channel #268 (shorted bond).

Gain M5T50001-ST1: no bias

0

1

2

3

4

5

6

7

8

0 64 128 192 256 320 384

Channel #

Ou

tpu

t [m

V/f

C]

All channels that appear as dead have pinholes.

Gain M5T50001-ST0: with bias

0

1

2

3

4

5

6

7

8

0 64 128 192 256 320 384

Channel #

Ou

tpu

t [m

V/f

C]

Channels with pinholes have lower gain.

Gain M5T50001-ST1: with bias

0

1

2

3

4

5

6

7

8

0 64 128 192 256 320 384

Channel #

Ou

tpu

t [m

V/f

C]

Noise M5T50001-ST0

0

0.5

1

1.5

2

2.5

0 64 128 192 256 320 384

Channel #

No

ise

[mV

]

Noise M5T50001-ST1

0

0.5

1

1.5

2

2.5

0 64 128 192 256 320 384

Channel #

No

ise

[mV

]

Hit Distribution M5T50001-ST0

0

20

40

60

80

100

120

140

0 64 128 192 256 320 384

Channel #

Signal Distribution M5T50001-ST0

0

50

100

150

200

250

300

350

400

450

15 20 25 30 35 40 45 50 55 60 65 70

Signal [mV]

Signal/Noise Distribution M5T50001-ST0

0

100

200

300

400

500

600

10 15 20 25 30 35 40 45 50 55

s/n

Hit distribution/ Pinholes

0

20

40

60

80

100

120

140

320 336 352 368 384

Channel #

Channel with pinhole: normal number of hits

Channel next to pinhole: high number of hits

Summary of test results on M5T50001

•Average gain: 6.2 mV/fC

•Dead channels (bonding shorts): 1 channel, 0.1% of module

•Average noise: 1.44 mV

•Peak signal: 24 mV

•Peak signal/ Gain = 24/6.2 = 3.9 fC (~1 MIP)

•Peak S/N: 17

•Pinholes: 26 on sensors, 23 seen as having lower gain

•On source test, channels with pinholes have expected number of hits, but the neighboring channel has higher number of hits than expected.