you me when it all started to work progress made outlook
TRANSCRIPT
![Page 1: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/1.jpg)
![Page 2: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/2.jpg)
you
me
![Page 3: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/3.jpg)
when it all started to work progress made outlook
![Page 4: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/4.jpg)
DriftSpace
GEM foils
MediPix CMOS pixel sensorBrass spacer blockPrinted circuit boardAluminium base plate
First events, recorded on March 29, 2003.Drift space irradiated with 55Fe quantaGas: Ar/Methane 90/10
![Page 5: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/5.jpg)
February 2004
And only 2 weeks later…
![Page 6: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/6.jpg)
Very strong E-field above (CMOS) MediPix!
MediPix2 pixel sensorBrass spacer blockPrinted circuit boardAluminum base plate
MicroMegas
Cathode (drift) plane
55Fe
Baseplate
Drift space: 15 mm
55Fe
Nikhef/Saclay/Univ. Twente
February 2004 II
![Page 7: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/7.jpg)
Timepix chip + Micromegas mesh:
CERN
Moiré effects
+ pillarsCharge mode
![Page 8: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/8.jpg)
Timepix chip + SiProt + Ingrid:
“Uniform”
MESA+
IMT Neuchatel
Charge mode
![Page 9: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/9.jpg)
![Page 10: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/10.jpg)
• Cosmic• He iC4H10
• Fully sensitive
![Page 11: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/11.jpg)
• Sparks observed!• He iC4H10
![Page 12: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/12.jpg)
No B field B field of 1 T
Gas: Ar/CF4/iC4H10 : 95/3/2
![Page 13: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/13.jpg)
![Page 14: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/14.jpg)
And for now
Next quad: 4 chips+InGrid on a board
ReLaXd CO2 cooling
![Page 15: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/15.jpg)
1.2 mm
Gossip: replacement of Si tracker
Essential: thin gas layer (1.2 mm)
![Page 16: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/16.jpg)
First prototype of GOSSIP on a PSI46 working:
• 1.2 mm drift gap• Grid signal used as trigger• 30 µm layer of SiProt
End of 2007University of Nijmegen
![Page 17: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/17.jpg)
Animated GIF of 100 hits on the PSI46 brico, 30µm SiProt.
8m
m
7.8mm
We can see tracks!University of Nijmegen
![Page 18: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/18.jpg)
+ it is light+ primary electrons can simply be multiplied: gas amplification: low power
Tracking material, GAS vs SILICON
+ no bias current: low power+ gas can be exchanged: no radiation damage of sensor+ gas has a low εr: with small voxels the source capacity can be small (10 fF) allowing fast, low-noise, and low-power preamps+ gas is usually cheap+ low sensitive for neutron and X-ray background+ δ-rays can be recognized
± high ion & electron mobility: fast signals, high count rates are possible
- discharges/sparks: readout system should be spark proof- ageing: must be solved and must be understood / under control± diffusion: limits max. drift length
![Page 19: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/19.jpg)
ATLAS update
Pixel Vertex
Silicon strips
TRT
+ it is light
+ it is cheap
+ low power dissipation
+ high position resolution
![Page 20: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/20.jpg)
Why not change it all?
Using GEM for calormetry is studied+ high energy resolution
digital track counting
+ excellent angular resolution± needs R&D
![Page 21: you me when it all started to work progress made outlook](https://reader030.vdocuments.us/reader030/viewer/2022033106/5697bfd81a28abf838caebbf/html5/thumbnails/21.jpg)
Questions?