Beam Conditioning Monitor ATLAS, LHC Hvard Gjersdal - - PowerPoint PPT Presentation

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Beam Conditioning Monitor ATLAS, LHC Hvard Gjersdal - - PowerPoint PPT Presentation

Mar 03, 2024 180 likes •458 views

Beam Conditioning Monitor ATLAS, LHC Hvard Gjersdal havard.gjersdal@fys.uio.no EPF, UiO Beam Conditioning Monitor p. 1 This talk Introduction to the BCM Different setups Analysis Beam Conditioning Monitor p. 2 BCM 8 modules

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SLIDE 1

Beam Conditioning Monitor

ATLAS, LHC

Håvard Gjersdal

havard.gjersdal@fys.uio.no

EPF, UiO

Beam Conditioning Monitor – p. 1

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SLIDE 2

This talk

Introduction to the BCM Different setups Analysis

Beam Conditioning Monitor – p. 2

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SLIDE 3

BCM

8 modules → 8 channels ±183cm from z=0 55mm away from beam pipe

Beam Conditioning Monitor – p. 3

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SLIDE 4

Purpose

Looking for signs of beam anomalies Beam scraping the TAS collimator, beam-gas interactions Causes background, in worst case damaging the detector Information about the beam Luminosity Interaction point(?) Based on single beam bunch crossings, not integrating the accumulated particle flux.

Beam Conditioning Monitor – p. 4

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SLIDE 5

Principle

Distinguish between background(TAS, beam-gas) and p-p interactions by time difference p-p interactions: each 25ns Background events: ∆t = 2∆z/c ∆t = 12.5ns when ∆z ≈ 1.90m

Beam Conditioning Monitor – p. 5

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SLIDE 6

Principle

Distinguish between background(TAS, beam-gas) and p-p interactions by time difference Beam-gas z < ∆z, interaction point

Beam Conditioning Monitor – p. 6

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SLIDE 7

pCVD diamond

polycrystalline Chemical Vapor Deposition(pCVD) diamond Radiation hard Fast and short signal, important for high speed enviroment Very low leakage current 1cm × 1cm × 500µm 2 diamonds back to back at 45◦ to improve SNR

Beam Conditioning Monitor – p. 7

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SLIDE 8

Front-end

Operated at ± 1000V → High and narrow current pulse Two stage Fotec amplifier

Beam Conditioning Monitor – p. 8

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SLIDE 9

Back-end

NINO amplifier-discriminator Adjustable threshold ∼15m coax-cable FPGA Field-programmable gate array Programmable logic components ∼100m optical fiber

Beam Conditioning Monitor – p. 9

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SLIDE 10

Test beam setup

Beam Conditioning Monitor – p. 10

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SLIDE 11

Position scan, analog, H6

Ch0:Trigger → ADC(CAEN V1729) Ch1: Fotec → Ampl.(ORTEC FTA820) → Discr.(ORTEC QUAD CFD) → ADC Ch2: Fotec → Ampl.(ORTEC FTA820) → Discr.(ORTEC QUAD CFD) → ADC Ch3 : Empty

Beam Conditioning Monitor – p. 11

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SLIDE 12

Prevessin

Beam Conditioning Monitor – p. 12

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SLIDE 13

Single event

stm0 Entries 1270 Mean 178.5 RMS 30.13 50 100 150 200 250 300

  • 2000
  • 1500
  • 1000
  • 500

500 1000 1500 2000 stm0 Entries 1263 Mean 178.5 RMS 30.43

event8 CH0

stm1 Entries 1270 Mean 161.8 RMS 87.08 50 100 150 200 250 300 100 200 300 400 500 600 700 800 900 stm1 Entries 1263 Mean 142.3 RMS 80.3

event8 CH1

stm2 Entries 1270 Mean 139.1 RMS 76.95 50 100 150 200 250 300

  • 50

50 100 150 200 250 stm2 Entries 1263 Mean 154.7 RMS 88.76

event8 CH2

stm3 Entries 1270 Mean 173.5 RMS 86.32 50 100 150 200 250 300

  • 20

20 40 60 80 100 120 stm3 Entries 1263 Mean 166.3 RMS 92.25

event8 CH3

Beam Conditioning Monitor – p. 13

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SLIDE 14

All event

histCh0

Entries 6303974 Mean 178.4 RMS 30.3

50 100 150 200 250 300

  • 2000
  • 1500
  • 1000
  • 500

500 1000 1500

histCh0

Entries 6303974 Mean 178.4 RMS 30.3

Ch:0 Events:10001

histCh1

Entries 6303974 Mean 128.6 RMS 61.04

50 100 150 200 250 300 100 200 300 400 500

histCh1

Entries 6303974 Mean 128.6 RMS 61.04

Ch:1 Events:10001

histCh2

Entries 6303974 Mean 125.9 RMS 45.5

50 100 150 200 250 300 50 100 150 200 250 300 350

histCh2

Entries 6303974 Mean 125.9 RMS 45.5

Ch:2 Events:10001

histCh3

Entries 6303974 Mean 144.5 RMS 90.83

50 100 150 200 250 300

  • 4
  • 3
  • 2
  • 1

1 2

histCh3

Entries 6303974 Mean 144.5 RMS 90.83

Ch:3 Events:10001

Beam Conditioning Monitor – p. 14

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SLIDE 15

Signal peak

signalCh0 Entries 10001 Mean 11.1 RMS 1.266 / ndf

2

χ 9987 / 0 Width 67.1 ± 100 MP 23.2 ± 247.6 Area 11616 ± 1e+04 GSigma 63.6 ± 100

200 400 600 800 1000 1200 1400 1600 1800 2000 1000 2000 3000 4000 5000 6000 7000 8000

signalCh0 Entries 10001 Mean 11.1 RMS 1.266 / ndf

2

χ 9987 / 0 Width 67.1 ± 100 MP 23.2 ± 247.6 Area 11616 ± 1e+04 GSigma 63.6 ± 100

signalCh0

signalCh1

Entries 10001 Mean 566.3 RMS 282 / ndf

2

χ 532.4 / 436 Width 1.26 ± 44.55 MP 1.7 ± 408.5 Area 420 ± 4.015e+04 GSigma 2.22 ± 74.65 200 400 600 800 1000 1200 1400 1600 1800 2000 20 40 60 80 100 120 140

signalCh1

Entries 10001 Mean 566.3 RMS 282 / ndf

2

χ 532.4 / 436 Width 1.26 ± 44.55 MP 1.7 ± 408.5 Area 420 ± 4.015e+04 GSigma 2.22 ± 74.65

signalCh1

signalCh2

Entries 10001 Mean 384.5 RMS 229.2 / ndf

2

χ 416.5 / 371 Width 0.89 ± 26.53 MP 1.5 ± 277.2 Area 422 ± 4.093e+04 GSigma 1.6 ± 74.2 200 400 600 800 1000 1200 1400 1600 1800 2000 20 40 60 80 100 120 140 160 180

signalCh2

Entries 10001 Mean 384.5 RMS 229.2 / ndf

2

χ 416.5 / 371 Width 0.89 ± 26.53 MP 1.5 ± 277.2 Area 422 ± 4.093e+04 GSigma 1.6 ± 74.2

signalCh2

signalCh3 Entries 10001 Mean 4.96 RMS 17.35 / ndf

2

χ 9961 / 10 Width 49.3 ± 100 MP 24.7 ± 435.9 Area 5025 ± 1e+04 GSigma 11.5 ± 100

200 400 600 800 1000 1200 1400 1600 1800 2000 1000 2000 3000 4000 5000 6000 7000 8000

signalCh3 Entries 10001 Mean 4.96 RMS 17.35 / ndf

2

χ 9961 / 10 Width 49.3 ± 100 MP 24.7 ± 435.9 Area 5025 ± 1e+04 GSigma 11.5 ± 100

signalCh3

Beam Conditioning Monitor – p. 15

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SLIDE 16

Signal Delay

signalDelayCh0 Entries 19906 Mean RMS 85 90 95 100 105 110 115 0.2 0.4 0.6 0.8 1 signalDelayCh0 Entries 19906 Mean RMS

signalDelayCh0

signalDelayCh1 Entries 11928 Mean 92.82 RMS 2.4 85 90 95 100 105 110 115 500 1000 1500 2000 2500 3000 signalDelayCh1 Entries 11928 Mean 92.82 RMS 2.4

signalDelayCh1

signalDelayCh2 Entries 14196 Mean 93.64 RMS 2.866 85 90 95 100 105 110 115 500 1000 1500 2000 2500 signalDelayCh2 Entries 14196 Mean 93.64 RMS 2.866

signalDelayCh2

signalDelayCh3

Entries 313 Mean 97.68 RMS 10.12

85 90 95 100 105 110 115 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 signalDelayCh3

Entries 313 Mean 97.68 RMS 10.12

signalDelayCh3

Beam Conditioning Monitor – p. 16

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SLIDE 17

Noise

noiseCh0 Entries 10001 Mean 4.706 RMS 1.527 / ndf

2

χ 119.5 / 7 Constant 72.3 ± 6025 Mean 0.013 ± 5.296 Sigma 0.009 ± 1.308

  • 200
  • 150
  • 100
  • 50

50 100 150 200 1000 2000 3000 4000 5000 6000

noiseCh0 Entries 10001 Mean 4.706 RMS 1.527 / ndf

2

χ 119.5 / 7 Constant 72.3 ± 6025 Mean 0.013 ± 5.296 Sigma 0.009 ± 1.308

noiseCh0 noiseCh1 Entries 10001 Mean 0.9121 RMS 19.49 / ndf

2

χ 1319 / 93 Constant 7.3 ± 526.6 Mean 0.20 ±

  • 2.16

Sigma 0.12 ± 13.13

  • 60
  • 40
  • 20

20 40 60 80 100 120 100 200 300 400 500

noiseCh1 Entries 10001 Mean 0.9121 RMS 19.49 / ndf

2

χ 1319 / 93 Constant 7.3 ± 526.6 Mean 0.20 ±

  • 2.16

Sigma 0.12 ± 13.13 noiseCh1 noiseCh2

Entries 10001 Mean 1.263 RMS 28.36 / ndf

2

χ 1484 / 112 Constant 5.1 ± 323.3 Mean 0.368 ±

  • 2.266

Sigma 0.24 ± 21.05

  • 60
  • 40
  • 20

20 40 60 80 100 120 140 50 100 150 200 250 300 350

noiseCh2

Entries 10001 Mean 1.263 RMS 28.36 / ndf

2

χ 1484 / 112 Constant 5.1 ± 323.3 Mean 0.368 ±

  • 2.266

Sigma 0.24 ± 21.05

noiseCh2 noiseCh3

Entries 10001 Mean

  • 1.458

RMS 5.888 / ndf

2

χ 1665 / 28 Constant 19.1 ± 1412 Mean 0.0687 ±

  • 0.7351

Sigma 0.04 ± 4.71

  • 200
  • 150
  • 100
  • 50

50 100 150 200 200 400 600 800 1000 1200 1400

noiseCh3

Entries 10001 Mean

  • 1.458

RMS 5.888 / ndf

2

χ 1665 / 28 Constant 19.1 ± 1412 Mean 0.0687 ±

  • 0.7351

Sigma 0.04 ± 4.71

noiseCh3

Beam Conditioning Monitor – p. 17

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SLIDE 18

Noise

noiseCh0 Entries 10001 Mean -0.5574 RMS 1.66

  • 200
  • 150
  • 100
  • 50

50 100 150 200 500 1000 1500 2000 2500 3000 3500 4000 4500 noiseCh0 Entries 10001 Mean -0.5574 RMS 1.66

noiseCh0

noiseCh1 Entries 10001 Mean

  • 4.453

RMS 24.58

  • 200
  • 150
  • 100
  • 50

50 100 150 200 50 100 150 200 250 300 350 400 450 noiseCh1 Entries 10001 Mean

  • 4.453

RMS 24.58

noiseCh1

noiseCh2 Entries 10001 Mean

  • 4.854

RMS 31.77

  • 200
  • 150
  • 100
  • 50

50 100 150 200 50 100 150 200 250 300 noiseCh2 Entries 10001 Mean

  • 4.854

RMS 31.77

noiseCh2

noiseCh3 Entries 10001 Mean 1.639 RMS 5.244

  • 200
  • 150
  • 100
  • 50

50 100 150 200 500 1000 1500 2000 2500 noiseCh3 Entries 10001 Mean 1.639 RMS 5.244

noiseCh3

Beam Conditioning Monitor – p. 18

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SLIDE 19

Noise, high stat

noiseCh1

Entries 6.0006e+07 Mean 1.138 RMS 19.9

  • 100
  • 50

50 100 150 200 250 300

2

10

3

10

4

10

5

10

6

10

noiseCh1

Entries 6.0006e+07 Mean 1.138 RMS 19.9

noiseCh1

Beam Conditioning Monitor – p. 19

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SLIDE 20

Noise, Fotec

Beam Conditioning Monitor – p. 20

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SLIDE 21

SNR

snrCh0 Entries 10001 Mean 10.82 RMS 2.83 5 10 15 20 25 30 35 40 45 50 50 100 150 200 250 300 350 400 snrCh0 Entries 10001 Mean 10.82 RMS 2.83

snrCh0

snrCh1 Entries 10001 Mean 21.26 RMS 7.872 5 10 15 20 25 30 35 40 45 50 20 40 60 80 100 120 140 160 180 snrCh1 Entries 10001 Mean 21.26 RMS 7.872

snrCh1

snrCh2 Entries 10001 Mean 11.7 RMS 5.968 5 10 15 20 25 30 35 40 45 50 50 100 150 200 250 300 snrCh2 Entries 10001 Mean 11.7 RMS 5.968

snrCh2

snrCh3 Entries 10001 Mean 4.163 RMS 1.535 5 10 15 20 25 30 35 40 45 50 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 snrCh3 Entries 10001 Mean 4.163 RMS 1.535

snrCh3

Beam Conditioning Monitor – p. 21

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SLIDE 22

Position scan

98 100 102 104 106 108 110 112 114 116 72 74 76 78 80 82 84 86 88 90

DiamondCh1

Entries 557894 Mean x 106.5 Mean y 80.89 RMS x 2.379 RMS y 2.937

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

DiamondCh1

Entries 557894 Mean x 106.5 Mean y 80.89 RMS x 2.379 RMS y 2.937

DiamondCh1

98 100 102 104 106 108 110 112 114 116 72 74 76 78 80 82 84 86 88 90

DiamondCh2

Entries 547559 Mean x 107.1 Mean y 81.01 RMS x 2.817 RMS y 3.163

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

DiamondCh2

Entries 547559 Mean x 107.1 Mean y 81.01 RMS x 2.817 RMS y 3.163

DiamondCh2

Beam Conditioning Monitor – p. 22

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SLIDE 23

NINO Threshold scan, digital, H8

Ch0: Fotec → NINO#1 → ADC Ch1: Fotec → NINO#2 → Attenuator → ADC Ch2: Fotec → NINO#2 → Attenuator → ADC Ch3 : Empty

Beam Conditioning Monitor – p. 23

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SLIDE 24

Single event, Thr=70mV

stm0

Entries 630 Mean 141.9 RMS 51.42

50 100 150 200 250 300

  • 100
  • 80
  • 60
  • 40
  • 20

20 40 60

stm0

Entries 630 Mean 141.9 RMS 51.42

event30 CH0

stm1

Entries 630 Mean 138.5 RMS 31.99

50 100 150 200 250 300

  • 100

100 200 300 400 500 600

stm1

Entries 630 Mean 138.5 RMS 31.99

event30 CH1

stm2

Entries 630 Mean 139.5 RMS 37.75

50 100 150 200 250 300 100 200 300 400 500 600 700 800 900

stm2

Entries 630 Mean 139.5 RMS 37.75

event30 CH2

stm3

Entries 630 Mean 72.95 RMS 91.04

50 100 150 200 250 300

  • 200
  • 150
  • 100
  • 50

stm3

Entries 630 Mean 72.95 RMS 91.04

event30 CH3

Beam Conditioning Monitor – p. 24

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SLIDE 25

SingleEvent, Thr=20mV

stm0 Entries 638 Mean 225 RMS 54.92 50 100 150 200 250 300

  • 2000
  • 1500
  • 1000
  • 500

500 1000 1500 2000 stm0 Entries 638 Mean 225 RMS 54.92

event5 CH0

stm1 Entries 638 Mean 138.7 RMS 7.056 50 100 150 200 250 300 100 200 300 400 500 600 700 stm1 Entries 638 Mean 138.7 RMS 7.056

event5 CH1

stm2 Entries 638 Mean 145.8 RMS 9.454 50 100 150 200 250 300 200 400 600 800 1000 stm2 Entries 638 Mean 145.8 RMS 9.454

event5 CH2

stm3 Entries 638 Mean 81.4 RMS 102.8 50 100 150 200 250 300

  • 500
  • 400
  • 300
  • 200
  • 100

stm3 Entries 638 Mean 81.4 RMS 102.8

event5 CH3

Beam Conditioning Monitor – p. 25

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SLIDE 26

Efficiency

20 40 60 80 100 120 140 160 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Ch0 Ch1 Ch2 Ch3

effCh0

Ch0 Ch1 Ch2 Ch3

Beam Conditioning Monitor – p. 26