Pixel readout for a TPC -...
Transcript of Pixel readout for a TPC -...
![Page 1: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/1.jpg)
1
Pixel readout for a TPC
LCWS 2010 – Tracking TPC R&D session27 March 2010
Jan Timmermans
On behalf of the Bonn/CERN/Freiburg/Nikhef/Saclay groups
![Page 2: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/2.jpg)
2
Full post-processing of a TimePix· Timepix chip + SiProt + Ingrid:
IMT Neuchatel:
15 or 20 µm highly resistive aSi:H protection layer
Timepix chip:
•256x256 pixels
•pixel: 55x55 µm2
•active surface: 14x14 mm2
MESA+: Ingrid
Now also Si3N4 protection layers (7 µm)
![Page 3: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/3.jpg)
3
Pad readout vs. Pixel readout
• Pad size ~1x5 mm2 or ~3x7 mm2
• Timepix pixel size 55x55 (µm)2
• Pad TPC ~ 106 pads; several 109 3D-voxels
• CMOS pixel readout ~ 2.109 ‘pads’ (but ‘only’ ~ 4.104 chips); ~ 1012 3D voxels
# pads/pixels might be problem for software, but occupancy rather low
![Page 4: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/4.jpg)
45 GeV e- beam
B = 1 T
TimePix chip 14x14 mm2
72x24 pads of ~3x7 mm2
![Page 5: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/5.jpg)
5
Two-track separation:
•Will be diffusion limited
•In this example:
5 pixels = 275 µm
Diffusion at 4T in
Ar/CF4/iC4H10 is
~ 20√200 = 300 µm
275 µm
256x256 pixels55x55 (µm)2
![Page 6: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/6.jpg)
6
4 Tesla
Transv. Diff.
Long. Diff.
Drift vel.
![Page 7: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/7.jpg)
7
Cosmic tracks traversing ~ 30 mm drift space Ingrid and Ar-CF4-iC4H10 (95/3/2%)
0 T 1 T
“large” diffusion “little” diffusion
![Page 8: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/8.jpg)
8
Triple-GEM module with readout by 8 Timepix chips: 16 cm2 active area, 0.5M channels
Bonn/Freiburg
28 mm
56 mm
![Page 9: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/9.jpg)
9
![Page 10: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/10.jpg)
10
![Page 11: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/11.jpg)
11
NIKHEF: emphasis on Ingrids
• QUAD chips board tested OK in 2008
• Equiped with Ingrids in June ‘09
• Works with source and cosmics at NIKHEF in Nov’09 – Feb’10
• within Relaxd project: 4x4 Medipix chips in compact mounting
• Will evolve in 8x8 Timepix chips for EUDET
• Readout does NOT work at DESY (testbeam) in Dec’09 and Mar’10, except for 3 days in March’10
![Page 12: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/12.jpg)
12
Few tracks from ~3-day test at DESY with quad-Ingrid detector
5 GeV electron beam
Gas: He-iC4H10 80/20
![Page 13: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/13.jpg)
13
A normal track 28 mm
28 m
m
![Page 14: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/14.jpg)
14
Track very close to border; there is 0.5mm ‘dyke’
![Page 15: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/15.jpg)
15
Two tracks about 0.5 mm apart in x
~0.5 mm
![Page 16: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/16.jpg)
16
Track backscattering from chip (=anode)
![Page 17: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/17.jpg)
17
Two tracks; last day lower-left Ingrid lost HV connection
![Page 18: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/18.jpg)
18
Track distorted by HV disconnected from lower-left Ingrid
![Page 19: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/19.jpg)
19
NIKHEF• within Relaxd project: 4x4 Medipix chips in compact mounting
• Will evolve in 8x8 Timepix chips for EUDET/LCTPC
![Page 20: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/20.jpg)
20
Pixel readout activities at Saclay
• Production of LP module with 8 Timepix+Ingrid chips (Saclay+Nikhef)
• Module (mother) board + ‘mezzanine’ board carrying chips produced by Saclay
• Timepix+Ingrid chips produced by Nikhef/Univ. Twente
• Readout working for 8 ‘naked’ Timepix chips
• Mounting of 8 Timepix+Ingrid chips soon
![Page 21: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/21.jpg)
21
•Mother card•Mezzanine card• Guard ring card• Heat dissipation block
22××4 TimePix/InGrid matrix module for the LPTPC4 TimePix/InGrid matrix module for the LPTPC
![Page 22: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/22.jpg)
22
• 8 naked TimePix chips have been bonded on the octopuce cardby Joop in Nikhef last month.
• For the first time, 8 chipshave been recognized by Pixelman
• The mezzanine card works electricallyusing power regulators
• During operation, the total powerconsumption is 20 watts
• Pixelman display issue found and has to be fixed
First light of the «First light of the « OctopuceOctopuce »»
![Page 23: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/23.jpg)
23
• The chip bypass has been tested
• The equalization was done and the test pulsers do the job
• Next month, 8 Ingrids could be mounted and tested in gas
• Next beam test in the Large Prototype of TPC in DESY before summer.
• To be continued…
NextNext stepssteps
![Page 24: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/24.jpg)
24
Conclusions• EUDET-SITPC final infrastructure available for
3-GEM + 8 Timepix chips – analysis beam data in progress
• LP module with 8 Timepix+Ingrid chips in preparation. Readout working with 8 ‘naked’ chips. Module mounting with Ingrids soon.
• Quad-Ingrid detector for standalone tests having readout problems at DESY (works at NIKHEF)
• Longer term: working on larger systems of 64 and 119 chips for Ingrids and GEMs.
![Page 25: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/25.jpg)
25
Backup
![Page 26: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/26.jpg)
26
Performance goals and design parameters for a TPC with standard electronics at the ILC detector
with MPGD
![Page 27: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/27.jpg)
27
Cluster counting distribution in He/iC4H10
•Using 1 cm tracklength
Electrons:
Avg=27.1/cm rms=6.3
Pions: 21.0/cm 4.8
•Using 25 cm tracklength
Electrons:
Avg=28.4/cm rms=1.2
Pions: 21.0/cm 1.2
4.4 σ difference0 60 0 60 0 60
all electrons pions0 60 0 60 0 60
![Page 28: Pixel readout for a TPC - indico.ihep.ac.cnindico.ihep.ac.cn/.../session/32/contribution/80/material/slides/0.pdf · • Quad-Ingrid detector for standalone tests having readout problems](https://reader037.fdocuments.us/reader037/viewer/2022090606/605b3d9a9006e06b8f6078ae/html5/thumbnails/28.jpg)
28
Single hits counting distribution in He/iC4H10
•Using 1 cm tracklength
Electrons:
Avg=42.2/cm rms=12.1
Pions: 38.4/cm 11.6
•Using 25 cm tracklength
Electrons:
Avg=46.0/cm rms=5.1
Pions: 41.5/cm 5.1
0.6 σ difference
0 80 0 80 0 80 all electrons pions
0 80 0 80 0 80