Testbeam 2010 with

CAPTAN System

Jianchun Wang

Syracuse University

Telescope Setup

2

Courtesy:Ryan Rivera

Telescope Configuration

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TypeThickness

(mm)Size

(mm2)HV Comment

Telescope N-type Si 300 ?16 x 2432 x 16

220

DUT

sCVD 500 4x 4 250 At 0, 10, & 20, HV scan at 20

MCZ Si 300 ? 16 x 24 500 0, threshold scan

Purdue 3D 200 8x8 40 3d_4e_wb5_8, failed

200 8x8 40 3d_2e_wb216_6, HV & threshold scan

285 8x8 40 3d_2e_wb5_2, HV & threshold scan

DUTYY

120 GeV proton beam

Scint

X

Z

Y

XX XXYY

a: –22 b: +22 a: +22b: –22b: 0, –10, –20

Lab frame

Pixel Planes

4

Y

X

Looking from

upstream

00

7

00

0

00

0

00

5

00

0

PlaneStation/Plaquette

Z (mm) CommentRyan Data

0 1/1 0/3 -43.4 Row/Y, as shown, rotated by a=+22

1 1/0 0/2 -42.6 Row/Y, flipped, 0 left-top, rotated by a=+22

2 0/0 0/0 -27.4 Row/X, as shown, rotated by b=–22

3 0/1 0/1 -26.6 Row/X, flipped, 0 right-top, rotated by b=–22

4 4/0 4/0 0 Row/X, as shown, rotated by b=0, –10, –20(for 3D 00 flipped down, for MCZ it is 2x3)

5 3/0 2/2 26.6 Row/X, as shown, rotated by b=+22

6 3/1 2/3 27.4 Row/X, flipped, 0 right-top, rotated by b=+22

7 2/1 2/1 42.6 Row/Y, as shown, rotated by a=–22

8 2/0 2/0 43.4 Row/Y, flipped, 0 left-top, rotated by a=–22

00

1

00

2

00

3

00

6

00

5

00

4

00

1

00

4

00

2

00

3

Row/Y

Row / X

Viewing with sensor in front

PSI46 Readout Chip

5

Ultra-black

black

lastDAC

C0 C1 A0 A1 A2 signal

CMS PSI46 readout chip Zero suppressed analog signals, serial

readout.

Double column logic.

Use 6 levels of analog signals for addressing

2 digs for double column: 0-25 (max 35).

3 digs for row x 2 column: 0-159 (max 215).

52 col80 row

98

00

mm

7900 mm

Sensor Geometry

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Size (row) = 100x79+200 = 8100 mmSize (col) = 150x50+300x2 = 8100 mm

79787776

10

200 mm

100 mm

100 mm0 1 2 3 49 50 51

300 mm 150 mm 150 mm 300 mm

2X3 Module

Purdue 3D Sensors

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CAPTAN System

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PCB – Processing and Control Board

DCB – Data Conversion Board

PDB – Power Distribution Board

It is designed to be flexible to include other readout electronics.

Hit Data Format

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Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Byte 3 2 1 0

Item bit 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 19 18 17 16 7 6 5 4 3 2 1 0

Item Trigger Trigger Station

Bit 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32

Byte 7 6 5 4

Item bit 7 6 5 4 3 2 1 0 5 4 3 2 1 0 9 8 0 6 5 4 3 2 1 0 2 1 0 4 3 2 1

Item Adc Column Adc c Row plaquette Chip

Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Byte before 4 5 6 7

Item bit 2 1 0 4 3 2 1 0 6 5 4 3 2 1 0 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0

Item Plaquette Chip Row Column Adc

Bef

ore

Reo

rde

ring

Byt

es

Aft

er R

eord

erin

g B

ytes

Bit 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32

Byte before 0 1 2 3

Item bit 7 6 5 4 3 2 1 0 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Item Station Trigger

Hit Maps

10X in Plane Frame (mm)

Y in

Pla

ne F

ram

e (m

m)

X

Z/beam

Y/upLabframe

XZ

YPlaneframe

beam

Diamond DUTat 20

Cluster Size

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Too many single pixel clusters. The resolution can not be as good as what was claimed.

Thresholds are not the same for different telescope planes.

Threshold needs to be further reduced.

Gain, threshold calibrations are not available yet.

Number of Pixels in a Cluster

Diamond DUT

Charge Distribution

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Gain calibration need more work. Gain for diamond seems wrong.

This just give you an idea on how they work.

Charge (Ke)

Diamond DUT

DX

13X – X2 in Lab Frame (mm)

Center aligned, no angle alignment yet

DY

14Y – Y0 in Lab Frame (mm)

Form Raw Tracks

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Number of Raw tracks Number of Hits Per Track

Track window is quite lose for two reasons:• Detectors are not aligned yet.• Want to include interaction tracks.

Summary

Different radiation hard sensors are tested: sCVD diamond, MCZ, 3D.

We are more interested in the diamond detector. Properties extracted from

this test beam will be important inputs to our upgrade simulation.

Get familiar with the CAPTAN system, get offline analysis package ready.

We may have our own detector tested with the system in near future.

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PSI Signal and Addressing

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For each hit pixel, the readout chip produces a signal at six levels.

The first five encode the pixel address.

The 6th represents the analog signal from the pixel.

The first two encode the double column address.

The next three encode the pixel address in that double column.

Most significant bit for the double column address (C0)

Least significant bit for the double column address (C0)

Least significant bit for the pixel address in the double column (A0)

Most significant bit for pixel address in the double column (A2)

A1

Analog signal from the pixel (data)

One pixel hit

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CMS PLT Diamond Sensor

CMS PLD 500 um thick sCVD Physical size 4.7 x 4.7

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