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Transcript of Monograph Edition January 2013 324 Pages, ISBN 978-3-527-40898-6 Wiley-VCH, Berlin Imaging gaseous...
![Page 1: Monograph Edition January 2013 324 Pages, ISBN 978-3-527-40898-6 Wiley-VCH, Berlin Imaging gaseous detectors and their applications Describing advanced.](https://reader035.fdocuments.net/reader035/viewer/2022062423/5697bfba1a28abf838ca021e/html5/thumbnails/1.jpg)
Monograph Edition January 2013324 Pages, ISBN 978-3-527-40898-6 Wiley-VCH, Berlin
Imaging gaseous detectors and their applications
Describing advanced detectors and their visualization and investigation techniques, this monograph presents the major applications in nuclear and high-energy physics, astrophysics, medicine and radiation measurements.
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Why we decided to present this monograph at the RD51 meeting?
Because it gives a review of gaseous defectors developments from the past up to the present. It summaryzs all latest achievements and understandings .Actually, the main focus in this monograph was done on physics of the gaseous detectors operation.We believe that this monograph will serve as a reference for daily work of the RD-51 members and will be also very useful students and any newcomers to this field.
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The cross talk in title with Charpak book was done for the purpose…
Our monograph dedicated to G. Charpak
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Originally this book was planned to be written together with Georges,
but then he becomes very weak and refuced to work further
He agreed, however, to write an introduction to the book, but even this was not materialized due to his sudden
death
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From the contents:
1. Introduction2. Basic processes in gaseous detectors3.Traditional position sensitive gaseous detectorsGeiger countersProportional countersSpark countersStreamers chambers…4.The MWPC eraWhy multi-wire proportional chambers revolutionized the detector developments..5. More in dept about physics of gaseous detectors6. New idea during the MWPC era:Drift chambersTPCRPC..7. New developments in MWPC, PPAC and RPCs after 19778. Micropattern gaseous detectors1. Microstrip gas chambers 2. Microdot gas chambers3. Microgap parallel-plate chambers and MICROMEGAS4. Capillary plates, GEMs5. Operational physics of micropattern gaseous detectors9. Applications of imaging gaseous detectors High energy physics Astrophysics and search of dark matter Plasma diagnosticsMedicine and biology… V. Conclusions The role of gaseous detectors in the greatest scientific discoveries,
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A short review of chapters
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Chapter 2.Basic processes in gaseous detectors were considered
…interaction of charges particles and photons with gas, liquid and solid absorbers
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Chapter 3. Gaseous detectors used before MWPC era are described
Note: before invention of MWPC G. Charpak worked with spark imaging chambers
… a history of these developments was given
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We mentioned also position-sensitive wire detectors, developed before MWPC era
…they, however, did not find wide range applications…
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Chapter 4. The MWPC era
… in this chapter we tried to answer the question: why MWPC srevolutionized the detector developments..
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Chapter 5. More in dept about physics of gaseous detectors
…feedbacks …a ”slow” breakdown
Aγ<1 Aγ=1
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…avalanche light emission
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…photoeffect and back diffusion
…an important role of UV photons
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…Ion recombination
…how ions extract electrons from cathodes: in vacuum γ+v=kv(Ei-2φ) and in gas γ+g=kg(Ei-2φ)
kg<kv …and depends on surface layers
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…”fast” breakdown
Raether limit: An0≈108 electrons
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Chapter 6,7. New ideas during the MWPC era
…drift chamber, TPCs…
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…RPCs:streamer and avalanche modes(Pestov, Santonico)
Timing RPCs:σ=1.28/{(α-ξ)v}=50ps(Fonte, Williams et al)
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…RICH and other photodetectors
…ALICE RICH…
Original idea…
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…cluster counters …PPAC(Sauli)
…light imaging chambers
Walenta, Puiz, Breskin Charpak and other groups
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New understanding in physics: a rate effect
Space charge in wire-type detectors
New physics in the case of PPAC
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Chapter 8. Micropattern gaseous detectors
…main detectors were reviewed: microstrip, microdot, GEM, MICROMEGAS…
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…”exotic” developments…
..detectors of visible photonsAkγ<1,K<<1
(Breskin and Japanes group) Ropelewski, Durte Pinto et al
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Main focus is on physics of operation…
1.00E+04
1.00E+05
1.00E+06
1.00E+07
1.00E+08
1.00E+09
1.00E+01 1.00E+03 1.00E+05 1.00E+07
CRate (Hz/mm2)
To
tal c
har
ge
in a
vala
nch
e in
(ele
ctro
ns)
1
2
3
45
6
7
…Raether limit inmicropattern detectors:An0≈ 106 -107 electrons
…rate effect inmicropattern detectors(cannot be much better than in PPAC!)
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Chapter 9. Applications of imaging gaseous detectors
…in high-energy physics…from UA1 to LHC
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PHENIX hadron –blind detector
CsI -coater GEMs!
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From COMPASS to TOTEM…
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…in astrophysics
CLUE
X-ray source map(Giacconi Noble prize)
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Moon shadow significance map(obtained from analysis of air showers)
ARGO cosmic rays visualizingRPCs
Medium scale say map (an anisotropy was discovered)
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…in underground experiments
?
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…in medicine andsecurity
Low dose scanners!
Novosibirsk (delivered dose is equivalent of 10 min of flight!) Biosapce
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Microgap-microstrip RRPC for mammography (XCounter AB)(10 time less dose)
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…in muon tomography
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…in plasma diagnostics
…P.L. Kapitza Lab
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Bellazzini X-ray detector for plasma studies
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…time resolved images of Tokamak plasma
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… and so on
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Conclusion:
The monograph is a summary of main developments in the field of gaseous detectors and, hopefully, it will be useful for various specialists( physicists, engineers, medical physicists etc) and especially for newcomers
to this field (students, freshmen…)It will be difficult to accomplish this work without daily interactionswith our colleagues and especially with the RD51 members
Thank you!
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