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The Quest for a Pocket-sized Bubble Chamber

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Presentation on theme: "The Quest for a Pocket-sized Bubble Chamber"— Presentation transcript:

1 The Quest for a Pocket-sized Bubble Chamber
Medipix 2: The Quest for a Pocket-sized Bubble Chamber Ryan Field – North Carolina State University Mentor – Erik Heijne

2 Outline Motivation Review of Medipix2’s features The experiment
Results Conclusions CERN REU Ryan Field

3 Motivation

4 Motivation Demonstrate use of Medipix for tracking particles
Calculate muon energy deposition Produce nice tracks with pion interactions. CERN REU Ryan Field

5 Medipix2 Review

6 Medipix2 Hybrid pixel detector 250 nm CMOS processing CERN REU
Ryan Field

7 Medipix2 SEM Image of the bumps on the CMOS chip. CERN REU Ryan Field

8 Medipix2 Pixel-wise and global threshold adjustment – equalization
Adjustable shutter length Capable of ~3 fps CERN REU Ryan Field

9 The Experiment

10 The Experiment Parasitic beam tests thanks to CALICE Use 2 detectors
Track muons Compute S-curve See pion interactions CERN REU Ryan Field

11 Results

12 Results Muon tracks Delta-rays Threshold adjustment CERN REU
Ryan Field

13 Results CERN REU Ryan Field

14 Results CERN REU Ryan Field

15 Conclusions

16 Conclusions Thin Si detector can be used to gain additional information on particle tracks. Compared to a 15 ft. bubble chamber, this device is 1/2000th of the size. Additional work will be needed in order to make truly 3-D and to trigger on events. CERN REU Ryan Field

17 Thank you National Science Foundation University of Michigan CERN
Erik Heijne Michael Campbell Xavi Llopart Medipix Collaboration Ford Motor Company CALICE Group CERN REU Ryan Field

18 Questions? CERN REU Ryan Field

19 CERN REU Ryan Field

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