Transcript Silicon Strip Sensors Prototypes

Towards CBM STS
Ladder Prototype
Yuri Murin for the CBM STS Consortium
JINR-SINP-KRI-SPbSU-SESRITIIE-BTI-(IHEP)-GSI
The Goal of the Project for
2008-2010
To build and test a prototype(s) of the basic
element of the CBM STS –
the CBM STS Ladder
Ladder
Support
Double-Deck
Analog Cables
Multi-Sensors
Sensors
Holders
Hybrids
(Read out
electronics)
Potential Risks
• Wrong choice of Sensor Type - radiation
hardness
• Readout with long ultra-thin analogue cables
– low production yield
• Wrong choice of cooling scheme – should be
exactly fitting the real demands
• Possibility for Assembling failure
CURE: early prototyping of critical elements
Guiding Idea
"We are not in the position to do the technology
choices now. We have to define however clearly
what prototypes have to be build, e.g. one
ambitious high-risk design, and a second, more
conservative backup design. Key factor will in
the end be whether the modules can be
produced with reasonable yield."
Walter F.J. Mueller 24/02/2008
2008 Tasks and their
sharing
 Technical design and production of CF support and cooling
elements @SPbSU & KRI
 Establishing DSSDs production line @ SINP & ELMA
 Development of n-irradiation site @KRI 20 MeV cyclotron
 Upgrading prototypes testing bench with collimated Ru106 betas @ JINR
 Organizing the in-beam testing site @ Protvino
 Development of microcables prototypes @ Kharkov
 Development of assembling site @ Russia (Protvino or
Dubna)
 Networking @ JINR or ITEP
Available budget and solid
promises for 2008
 A 2008 part of the 300K 3- year ISTC Project of
KRI-SINP started at 01/02/2008
 12K Eu of BMBF input to JINR (a solid promise)
 600K roubles from ITEP (a solid promise) (1€≈35 Rb)
Technical design and production of CF support and
cooling elements @SPbSU & KRI ( S.N. Igolkin)
URGENT NEED: Detailed specifications on the
geometrical layout of sensors with detailed
description heat load sources for design and
ANSI calculations
Establishing DSSDs production line @ SINP & ELMA
( M.M. Merkin)
URGENT NEED: A box (10 pcs) of TOPSIL 4
inch Si wafers polished from both sides for
starting production cycle at ELMA right away
Development of n-irradiation testing site @KRI 20 MeV
cyclotron ( L.M.Solin)
1.0E+10
27
6
0.12
1
Al
8.0E+9
27
27
Al(n,p) Mg
2 and 3
4 and 5
]
2
neutrons
Neutron flux [
1
p
Be
MeV cm mA s
2
0.10
6 and 7
6.0E+9
0.08
0.06
4.0E+9
Cross section [b]
4
24
Al(n,) Na
Neutron spectra of
9
Be(p,n) reaction
0.04
3
2.0E+9
0.02
5
7
0
0.0E+0
2
4
6
8
10
12
14
Neutron energy [MeV]
<sNa-24>
DsNa-24
sNa-24
D
[mb]
[mb]
[mb]
[%]
1
0.1091
0.0028
0.0743
46.7
2/3
0.0929
0.0021
0.0716
29.8
4/5
0.0548
0.0017
0.0607
-9.7
6/7
0.0319
0.0009
0.0349
-8.8
Sample
Suggestions: 1. increase the number of activation foils
2. to put a pad testing baby on the Si wafer in next releases
9Be
+ p  4He + 5Li + n – 3.5 MeV
 8Be + p + n – 1.7 MeV
 2 4He + p + n – 1.6 MeV
Building Prototypes testing bench with Ru-106 betas @
JINR ( P.V. Nomokonov)
Current Activity:
upgrading e.g.transition
to MIDAS (PSI-TRIUMP)
DAQ to be used for the
in-beam tests later this
year
URGENT NEED: n-XITER FEE electronics and CIS
baby sensors mounted on PCB with ERNI connectors (a
task to Kharkov)
Organizing the in-beam testing site @ Protvino
Y.A. Murin negotiating with SVD-2 Collaboration
(P.F. Ermolov) and IHEP management
SVD-2 setup at IHEP/ 50 GeV protons with intensity up to 2×106/ spill
URGENT NEED: to organize Consortium
Meeting in JINR or ITEP in June 2008
Development of microcables prototypes @ Kharkov
( V.N. Borshchov )
"Critical cell" definition is to be agreed
Development of assembling site @ Russia
(Protvino or Dubna)
( Yu.Murin & J.Heuser)
The Second Step: visiting existing ALICE assembling
sites at Strassburg (J.Lutz) and/or Utrecht (
G.Nooren)
Networking @ JINR or ITEP
Yu.Murin
URGENT NEED: organize Consortium Meeting in JINR or ITEP in June 2008
Thank you for your attention!