ecfa-desy prague nov `02 ivo polak 1 apd-nov02 apd + preamplification

ECFA-DESY Prague NOV `02 Ivo Polak [email protected]

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APD-NOV02

APD + Preamplification


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Present results

we tested behavior of APD Hamamatsu S8550 32 channel matrix

gain, uniformity preamplifier matching gain distribution


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Future plans

crosstalk test on matrix APD S8550 preamp optimisation 16 channel system for minical study, test of filtering, shaping


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following

Uniformity APD matrix Gain distribution APD + PreAmp DC gain graph Histograms of pulse response


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UNIFORMITY 4*8 pixels S8550 APDIllumination Table Uniformity DC mode APD S8550 Absolute values

HV bias 360V HV bias 380V HV bias 386VI-led 0mA 0.2mA 0.4mA 1.0mA I-led 0mA 0.2mA 0.4mA 1.0mA I-led 0mA 0.2mA 0.4mA 1.0mA

Pixel nA nA nA nA nA nA nA nA nA nA nA nAA1 2 222 485 1250 2.44 615 1290 3460 3.15 1450 3050 7930A2 2.45 259 562 1460 3.39 865 1900 4870 150 3730 8010 17370A3 2.05 223 484 1260 4.1 685 1470 3740 203 2190 4510 10830A4 1.36 220 474 1230 2.05 561 1240 3200 3.06 1160 2520 6600B1 1.8 260 556 1438 2.29 829 1730 4480 3.54 2610 5680 12920B2 2.5 258 556 1458 3.43 850 1820 4820 115 3460 7290 17420B3 1.64 229 494 1291 2.8 628 1360 3540 174 1670 3320 8110B4 1.43 225 476 1240 1.95 527 1140 2950 2.58 970 2100 5360C1 1.8 265 571 1480 2.28 847 1810 4620 3.62 2840 6040 14570C2 2.3 281 599 1540 3.49 1000 2130 5470 152 5810 11700 24570C3 2.13 227 487 1260 3.09 526 1140 2950 75 1030 2120 5380C4 1.44 235 507 1320 1.85 516 1110 2900 2.27 860 1850 4840D1 2.27 248 536 1390 2.76 667 1440 3770 3.56 1550 3240 8350D2 2.2 282 604 1560 3.5 1020 2160 5540 168 6750 11600 27600D3 1.98 251 542 1400 2.89 581 1260 3280 68 1120 2350 5880D4 1.85 223 485 1250 2.27 440 959 2500 2.61 662 1430 3710E1 2.25 254 551 1420 3.1 733 1560 4020 4.95 1940 4000 10000E2 2.47 270 582 1500 3.8 870 1900 4900 166 3500 7400 17600E3 2.14 232 505 1310 2.78 476 1025 2640 8 738 1600 4190E4 1.91 223 483 1260 2.28 427 929 2410 2.57 620 1340 3500F1 2.28 250 538 1380 2.9 684 1470 3820 4.14 1650 3570 9400F2 2.65 257 555 1440 20.2 784 1700 4390 285 2750 5270 12400F3 2.24 236 507 1320 2.88 464 1010 2620 3.51 603 1510 3920F4 2.03 221 475 1240 2.4 405 880 2300 2.59 574 1240 3260G1 2.24 240 515 1330 2.76 640 1370 3500 3.62 1420 3120 7760G2 2.56 248 534 1370 34.6 766 1650 4080 310 2770 5270 12800G3 2.46 210 450 1170 3.15 401 870 2260 3.65 600 1280 3370G4 2.04 224 483 1250 2.38 404 885 2300 2.62 578 1240 3260H1 12.2H2 2.8 239 520 1350 23.4 710 1430 3810 325 2150 4140 10450H3 2.36 228 496 1290 2.93 437 957 2470 3.3 638 1390 3550H4 2 199 426 1110 2.33 357 772 2010 2.55 497 1070 3780

RMS 1.8 20.4 43.4 109.7 7.3 186.1 392.2 1000.5 102.5 1523.8 2879.8 6331.6Mean 2.4 240.0 517.4 1340.9 5.0 636.0 1366.7 3536.1 72.8 1899.7 3879.0 9376.8

Unif.[%] 74.7 8.5 8.4 8.2 144.3 29.3 28.7 28.3 140.8 80.2 74.2 67.5


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UNIFORMITY marked high dark current, E1 pixelIllumination Table Uniformity DC mode APD S8550 Absolute values Prague OCT2002

HV bias 360V HV bias 380V HV bias 386VI-led 0mA 0.2mA 0.4mA 1.0mA I-led 0mA 0.2mA 0.4mA 1.0mA I-led 0mA 0.2mA 0.4mA 1.0mA

Pixel nA nA nA nA nA nA nA nA nA nA nA nAA1 2 222 485 1250 2.44 615 1290 3460 3.15 1450 3050 7930A2 2.45 259 562 1460 3.39 865 1900 4870 150 3730 8010 17370A3 2.05 223 484 1260 4.1 685 1470 3740 203 2190 4510 10830A4 1.36 220 474 1230 2.05 561 1240 3200 3.06 1160 2520 6600B1 1.8 260 556 1438 2.29 829 1730 4480 3.54 2610 5680 12920B2 2.5 258 556 1458 3.43 850 1820 4820 115 3460 7290 17420B3 1.64 229 494 1291 2.8 628 1360 3540 174 1670 3320 8110B4 1.43 225 476 1240 1.95 527 1140 2950 2.58 970 2100 5360C1 1.8 265 571 1480 2.28 847 1810 4620 3.62 2840 6040 14570C2 2.3 281 599 1540 3.49 1000 2130 5470 152 5810 11700 24570C3 2.13 227 487 1260 3.09 526 1140 2950 75 1030 2120 5380C4 1.44 235 507 1320 1.85 516 1110 2900 2.27 860 1850 4840D1 2.27 248 536 1390 2.76 667 1440 3770 3.56 1550 3240 8350D2 2.2 282 604 1560 3.5 1020 2160 5540 168 6750 11600 27600D3 1.98 251 542 1400 2.89 581 1260 3280 68 1120 2350 5880D4 1.85 223 485 1250 2.27 440 959 2500 2.61 662 1430 3710E1 2.25 254 551 1420 3.1 733 1560 4020 4.95 1940 4000 10000E2 2.47 270 582 1500 3.8 870 1900 4900 166 3500 7400 17600E3 2.14 232 505 1310 2.78 476 1025 2640 8 738 1600 4190E4 1.91 223 483 1260 2.28 427 929 2410 2.57 620 1340 3500F1 2.28 250 538 1380 2.9 684 1470 3820 4.14 1650 3570 9400F2 2.65 257 555 1440 20.2 784 1700 4390 285 2750 5270 12400F3 2.24 236 507 1320 2.88 464 1010 2620 3.51 603 1510 3920F4 2.03 221 475 1240 2.4 405 880 2300 2.59 574 1240 3260G1 2.24 240 515 1330 2.76 640 1370 3500 3.62 1420 3120 7760G2 2.56 248 534 1370 34.6 766 1650 4080 310 2770 5270 12800G3 2.46 210 450 1170 3.15 401 870 2260 3.65 600 1280 3370G4 2.04 224 483 1250 2.38 404 885 2300 2.62 578 1240 3260H1 12.2 BAD pixelH2 2.8 239 520 1350 23.4 710 1430 3810 325 2150 4140 10450H3 2.36 228 496 1290 2.93 437 957 2470 3.3 638 1390 3550H4 2 199 426 1110 2.33 357 772 2010 2.55 497 1070 3780


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APD matrix uniformity

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I LED nA

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column

Dark current @ 360V S8550

Řada1

Řada2

Řada3

Řada4


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APD matrix uniformity

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HS1 S2 S3

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APD Uniformity 1mA @ 360V

Řada1

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Řada4


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Distribution of Gain APD – PreAmp Calculation of gain : input data 25 p.e. per tile measured by PMT, Q.E.(PMT) = 10%,

Q.E.(APD) = 80% Peak of output signal measured on QADC (LRS 2249W) is 180 BINs (1 BIN = 0.25 pC) Voltage gain Au of preamp ~ 85 Rin = 1kOhm Rout = 50Ohm Gain of our setup G = Qo/Qi Qo = 180 * 0.25 = 45 pC, = output / input charges Qi = Np * Q.E. * e Np .... number of photons Np = 25 p.e. * 3 tiles / Q.E.(PMT) = 750 Qi = 750 * 0.8 * 1.6E-7 pC = 9.6E-5 pC G = Qo / Qi = 45 pC/ 9.6E-5 pC = 470 000 for APD + voltage mode preamp G = M(APD) * Au * Rin / Rout M(APD) = G / (Au * Rin / Rout)

= 470 000 / (85 * 20) = 470 000 / 1700 = 276

It corresponds with pulse and DC LED tests. We do not have APD with M ~ 5000 !!!


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TERMINOLOGY

What is a BIN?

ADC count ADC channel example: ADC 10bit resolution used 1024 BINs i.e. digital interpretation of amplitude, level 256BIN means amplitude 1/4 of Full Scale

WHY I am using BIN? 8 channel ADC means 8 inputs of the ADC ADC count has to do with a number of ADC sample BIN is commonly used in DSP technique


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APD S8550 Dark current / DC lightpixel E1

19SEP 2002, Prague 23degC

HV bias V Dark current nA illuminated current nA difference, signal M gain corrected HV M gain

40 0.5 7.5 7.0 1.0 40.0 1 60 0.6 7.6 7.0 1.0 60.0 1 80 0.7 7.7 7.0 1.0 80.0 1 100 0.7 8 7.3 1.0 100.0 1 120 0.9 8.4 7.5 1.1 120.0 1 140 1 9.2 8.2 1.2 140.0 1 160 1.2 10.5 9.3 1.3 160.0 1 180 1.7 13 11.3 1.6 180.0 2 200 2.1 16.5 14.4 2.1 200.0 2 220 2.1 20.8 18.7 2.7 220.0 3 240 2.1 27.3 25.2 3.6 240.0 4 260 2.2 36.9 34.7 5.0 260.0 5 280 2.2 51 48.8 7.0 279.9 7 300 2.3 74.5 72.2 10.3 299.9 10 310 2.3 90.9 88.6 12.7 309.9 13 320 2.3 114 111.7 16.0 319.9 16 330 2.4 158 155.6 22.2 329.8 22 340 2.5 194 191.5 27.4 339.8 27 350 2.6 257 254.4 36.3 349.7 36 355 2.6 298 295.4 42.2 354.7 42 360 2.7 357 354.3 50.6 359.6 51 365 2.9 439 436.1 62.3 364.6 62 370 3.1 559 555.9 79.4 369.4 79 375 3.3 738 734.7 105.0 374.3 105 378 3.5 903 899.5 128.5 377.1 129 380 3.8 1042 1038.2 148.3 379.0 148 381 3.9 1117 1113.1 159.0 379.9 159 382 4.1 1230 1225.9 175.1 380.8 175 383 4.3 1338 1333.7 190.5 381.7 191 384 4.6 1471 1466.4 209.5 382.5 209 385 4.9 1621 1616.1 230.9 383.4 231 386 5.3 1800 1794.7 256.4 384.2 256 387 6 2011 2005.0 286.4 385.0 286 388 7.2 2255 2247.8 321.1 385.7 321 389 9.1 2540 2530.9 361.6 386.5 362 390 14.1 2880 2865.9 409.4 387.1 409 391 50 3292 3242.0 463.1 387.7 463 392 515 3715 3200.0 457.1 388.3 457 393 1390 4210 2820.0 402.9 388.8 403 394 2170 4730 2560.0 365.7 389.3 366 395 3170 5380 2210.0 315.7 389.6 316 396 3980 5960 1980.0 282.9 390.0 283 397 4920 6680 1760.0 251.4 390.3 251 398 5700 7380 1680.0 240.0 390.6 240 399 6590 8110 1520.0 217.1 390.9 217 400 7430 8970 1540.0 220.0 391.0 220

DC gain APDpixel E1


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DC gain APD pixel E1

DC gain APD S8550 pixel E1 Prague sep 2002

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HV bias [V]

M g

ain

APD

gain M


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DC gain formula

How the Gain M is calculated?

M = (Is – Id) / Is1

M gain of APD Is signal current

(illuminated) Id dark current Is1 signal at low HV

(M = 1)


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DC gain APD pixel D4APD S8550 Dark current / DC light

pixel D4 I led 2.0mA19SEP 2002, Prague 23degC YEL LED, 3 fibres

HV bias V Dark current nA illuminated current nA difference, signal M gain corrected HV M gain illuminated current nA

40 0.6 10.8 10.2 1.0 40 1 10.860 0.7 10.9 10.2 1.0 60 1 10.980 0.7 10.9 10.2 1.0 80 1 10.9100 0.8 11.2 10.4 1.0 100 1 11.2120 0.8 11.7 10.9 1.1 120 1 11.7140 0.9 12.7 11.8 1.2 140 1 12.7160 1.1 14.7 13.6 1.3 160 1 14.7180 1.4 17.8 16.4 1.6 180 2 17.8200 1.6 22.5 20.9 2.0 200 2 22.5220 1.6 28.8 27.2 2.7 220 3 28.8240 1.7 38.1 36.4 3.6 240 4 38.1260 1.7 51.6 49.9 4.9 260 5 51.6280 1.8 72.1 70.3 6.9 280 7 72.1300 1.8 104.6 102.8 10.1 300 10 104.6310 1.9 127 125.1 12.3 310 12 127320 1.9 158 156.1 15.3 320 15 158330 2 197 195.0 19.1 330 19 197340 2.1 250 247.9 24.3 340 24 250350 2.3 332 329.7 32.3 350 32 332355 2.4 384 381.6 37.4 355 37 384360 2.5 450 447.5 43.9 360 44 450365 2.6 540 537.4 52.7 364 53 540370 2.8 656 653.2 64.0 369 64 656375 3 825 822.0 80.6 374 81 825378 3.3 953 949.7 93.1 377 93 953380 3.4 1060 1056.6 103.6 379 104 1060381 3.7 1130 1126.3 110.4 380 110 1130382 3.7 1190 1186.3 116.3 381 116 1190383 3.8 1266 1262.2 123.7 382 124 1266384 3.9 1350 1346.1 132.0 383 132 1350385 4.3 1450 1445.7 141.7 384 142 1450386 4.6 1564 1559.4 152.9 384 153 1564387 4.8 1692 1687.2 165.4 385 165 1692388 5.1 1817 1811.9 177.6 386 178 1817389 5.5 1960 1954.5 191.6 387 192 1960390 5.9 2115 2109.1 206.8 388 207 2115391 6.7 2317 2310.3 226.5 389 227 2317392 7.5 2545 2537.5 248.8 389 249 2545393 8.6 2780 2771.4 271.7 390 272 2780394 10.1 3055 3044.9 298.5 391 299 3055395 13.4 3405 3391.6 332.5 392 333 3405396 20 3765 3745.0 367.2 392 367 3765397 35 4115 4080.0 400.0 393 400 4115398 175 4570 4395.0 430.9 393 431 4570399 880 5053 4173.0 409.1 394 409 5053400 1763 5600 3837.0 376.2 394 376 5600


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DC gain APD pixel D4

DC gain APD S8550 pixel D4 Prague sep 2002

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HV bias [V]

M g

ain

APD

M gain


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corrected HV bias 385.5V

corrected HV bias 387.5V

pixel E1Beam test


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LED

HV bias1V diff


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LED

APD out by 2


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LED


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LED long fetching


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Any questions?

Thank you.

ecfa-desy prague nov `02 ivo polak 1 apd-nov02 apd + preamplification

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