slide1 n.
Download
Skip this Video
Download Presentation
Johann M. Heuser, GSI Darmstadt CBM Collaboration Meeting JINR Dubna, 16 October 2008

Loading in 2 Seconds...

play fullscreen
1 / 33

Johann M. Heuser, GSI Darmstadt CBM Collaboration Meeting JINR Dubna, 16 October 2008 - PowerPoint PPT Presentation


  • 122 Views
  • Uploaded on

CBM. Status of the Silicon Tracking System. Johann M. Heuser, GSI Darmstadt CBM Collaboration Meeting JINR Dubna, 16 October 2008. Joint STS-MVD Workgroup Meeting. Wide range of topics/activities: Simulation studies refined ... Detector R&D ... First in-beam test ...

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Johann M. Heuser, GSI Darmstadt CBM Collaboration Meeting JINR Dubna, 16 October 2008' - zihna


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

CBM

Status of the Silicon Tracking System

Johann M. Heuser, GSI Darmstadt

CBM Collaboration Meeting JINR Dubna, 16 October 2008

J.M. Heuser − Status of the Silicon Tracking System

slide2

Joint STS-MVD Workgroup Meeting

Wide range of topics/activities:

Simulation studies refined ...

Detector R&D ...

First in-beam test ...

R&D on module demonstrators ...

System engineering ...

Project planning ...

IMoU – first draft ...

J.M. Heuser − Status of the Silicon Tracking System

sts detector simulations
STS Detector - simulations
  • - low-mass
  • - 8 tracking stations
  • - full azimuthal angle coverage
  • - polar angle coverage:
  • from 2.5° to 25°
  • high track density in inner region
  • high collision rate
  • vertical magnetic field

talk by R. Karabowicz

J.M. Heuser − Status of the Silicon Tracking System

stations overlaps vs gaps
Stations: Overlaps vs gaps

gaps

Example:station #3 at z=40cm

39.65 40 40.35

overlaps

intermediate

J.M. Heuser − Status of the Silicon Tracking System

tracking efficiency
Tracking efficiency

Overlaps

Gaps

overall efficiency

1 gap, 2 gaps

1 overlap, 2 overlaps

do not change tracking efficiency

do change tracking efficiency

Work done by the GSI

Summer Student

Maksym Zyzak from

National University, Kyiv

J.M. Heuser − Status of the Silicon Tracking System

momentum resolution
Momentum resolution

Overlaps

Gaps

overall resolution

1 gap, 2 gaps

1 overlap, 2 overlaps

do not change momentum resolution

do change resolution

Work done by the GSI

Summer Student

Maksym Zyzak from

National University, Kyiv

J.M. Heuser − Status of the Silicon Tracking System

hit density

Realistic detector response

Hit density

Cluster length

1.4-2.3 strips

0-31 hits/cm2

Hit finding efficiency

Strip occupancy

54-99%

<eff> = 91.9%

0-11%

J.M. Heuser − Status of the Silicon Tracking System

slide8

Main sensor

Double-sided, 1024 strips per side, 50 µm pitch, 15º stereo angle, full-area sensitive, size: 5656 mm2

“Baby” sensors

Double-sided, 256256 strips, orthogonal, 50(80) µm pitch, size: 15.615.6 mm2

Detector R&D: CIS-GSI wafer CBM01

4" wafer, 285 µm n-type Si double metal layer

CBM01B1

CBM01B2

CBM01

J.M. Heuser − Status of the Silicon Tracking System

slide9

GSI: Quality test of AC strip insulation

A. Lymanets

CBM01B2:

DC-pad, bias pad

Test series

AC-pad, bias pad

AC-DC

neighboring

AC pads

Probe station at DiamondLab, GSI

Procedure:

applied 1 V with contact needles, measured the current  resistance derived

Probe station in MVD Group, IKF Frankfurt

J.M. Heuser − Status of the Silicon Tracking System

slide10

R (Ω)

Detector type: CBM01B2

Wafer: 270529-4

10 k

AC-bias ring insulation

p-side

strip #

first part of production (almost) good 

selected for test boards/beam test

R (Ω)

AC-bias ring insulation

n-side

Warm thanks to summer student

Andrzej Wilczek, Kattowicz, for help

strip #

J.M. Heuser − Status of the Silicon Tracking System

slide11

R (Ω)

Detector type: CBM01B2

Wafer: 270529-19

10 k

AC-bias ring insulation

p-side

strip #

R (Ω)

second part of production bad 

n-side

AC-DC insulation

strip #

J.M. Heuser − Status of the Silicon Tracking System

ihep protvino test of cbm01 main detector
IHEP Protvino — Test of CBM01 main detector

A. Vorobiev

CBM01 – so far results from n-side ... work in progress

J.M. Heuser − Status of the Silicon Tracking System

slide13

CIS-GSI "technology wafer" CBM02

At GSI:

5  8 baby detectors

a la type "B2"

2 tested so far on AC insulator quality:

OK

more to be tested

A. Lymanets

J.M. Heuser − Status of the Silicon Tracking System

detector tests at kinr kiev
Detector tests at KINR Kiev

V. Pugatch

CBM01-B2-sensor

50,7 μm – pitch

Double-sided

Sensor is glued to the AEROPLAST

Carbon fiber supporting frame

Microcables are bonded to sensor pads:

Even strips – to one side;

odd strips to the opposite side

LEMO connectors are soldered

by wires to large pads on microcables

J.M. Heuser − Status of the Silicon Tracking System

slide15

Module support frame studies

Micro cables

Cooling infra-structure

J.M. Heuser − Status of the Silicon Tracking System

laser test setup at kinr
Laser test setup at KINR

4th year students from

Kiev University –

Measuring η-function

For the CBM-01 sensor

J.M. Heuser − Status of the Silicon Tracking System

slide17

Detector design @ SINP-MSU

  • Sensor size 62.0 (?) X 42.0 mm2
  • Active area 59392 (60416) X 40000 mkm2
  • Number of strips on both sides – 1024
  • Strip pitch – 58.0 mkm (59 mkm)
  • Stereo angle - ±7.5o
  • P-side – double metal with short strips connection
  • N-side single metal

M. Merkin

J.M. Heuser − Status of the Silicon Tracking System

slide18

R&D ON MICRO-CABLES FOR BABY SENSOR RADIATION TEST MODULE

S. Borshchov

demonstrator 0b ... produced

demonstrator 1

Wire-bonding

(Pitch 50.7um)

Sensor

Double-deck analog cable

TAB-bonding

(Pitch 120um)

Front-End Board

J.M. Heuser − Status of the Silicon Tracking System

slide19

First CBM Detector System Beam Test

Parasitic to the HADES beam time: 8h*) 2.3 GeV proton beam

Location: GSI, Cave C

J.M. Heuser − Status of the Silicon Tracking System

slide20

Testbeam Setup

  • 3 CBM experiments (STS, GEM, FPGA + DAQ)
  • 1 standalone PANDA experiment (DIRC)

beam diagnostics box

design and construction: W. Niebur, GSI

J.M. Heuser − Status of the Silicon Tracking System

slide21

STS Test Setup – "Plan A"

reference tracking station

postponed to 2009

CBM01B1

CBM01B2

CBM01

J.M. Heuser − Status of the Silicon Tracking System

slide22

CBM01B2 test detectors, GSI-CIS 8/2007

4" wafer, 285 µm Si

mounted on test boards

32 strips to connector

CBM01B1

CBM01B2

CBM01

first multi-purpose tool for detector tests, 2/2008

J.M. Heuser − Status of the Silicon Tracking System

slide23

STS Test Setup – "Plan B"

FEB1nxGen rev. B

FEB1nxGen rev. B

32 of 64 ch

32 of 64 ch

32 of 64 ch

32 of 64 ch

ROC

pos. signals

CBM01B2 Test board

32 strips bonded on p-side

CBM01B2

overlap area strips p-n side: 1.6 × 1.6 mm2

32 strips bonded on n-side

neg. signals

J.M. Heuser − Status of the Silicon Tracking System

slide24

Preparation of STS test beam box – September 2008

Holders of two microstrip detector test boards (10 cm  10 cm) and two front-end boards (one mounted board shown).

rotation w.r.t. beam:

study of cluster size

Al box, 40 cm  40 cm  20 cm. Covers removed. Legs ~ 50 cm high lift the box from a table to the beam line.

Mechanics designed and prepared by Wolfgang Niebur et al., GSI

J.M. Heuser − Status of the Silicon Tracking System

slide25

on the beam line:

2 detectors CBM01B2

2 FEB-1nx-gen rev B

2 ROCs

power supplies

J.M. Heuser − Status of the Silicon Tracking System

slide26

Successful test of CBM prototype detector systems with self-triggering read-out electronics using proton beams atGSI, September 28-30, 2008

GSI and AGH Krakow

KIP Heidelberg

VECC Kolkata

2 Double-sided silicon microstrip detectors

Double and triple GEM detectors

Radiation tolerance studies

Full readout and analysis chain:

Go4

online

Detector signals

Analysis

Front-end board with self-triggering n-XYTER chip

Data Acquisition System

Readout controller

offline

slide27

Detector commissioning:

Operation on the beam line:

90Sr -spectra ...

Correlation of fired channels in two silicon microstrip detectors

... in several channels of a silicon microstrip detector

... and in a GEM detector

Beam spot seen on a GEM detector (every 2nd channel read out)

Participants:

GSI, Darmstadt, GermanyJINR, Dubna, RussiaKIP, Heidelberg, GermanyVECC, Kolkata, IndiaAGH, Krakow, Poland

www-cbm.gsi.de

slide29

The Data

http://cbm-wiki.gsi.de/cgi-bin/view/Beamtime/BeamTimeGsiSep2008Data

29 runs 50 GB Data

digging into the data just beginning ...

... first STS plots by P. Nomokonov, JINR;... presentation by R. Karabowicz

J.M. Heuser − Status of the Silicon Tracking System

slide30

Engineering of STS module demonstrators and stations

S. Igolkin

J.M. Heuser − Status of the Silicon Tracking System

slide31

R&D on STS system integration

S. Belogurov, A. Semennikov

J.M. Heuser − Status of the Silicon Tracking System

slide32

R&D cooperations, tasks

CBM-MPD STS Consortium:2008 - 2010

JINR-SINP-KRI-SPbSU-SESRITIIE-BTI-IHEP-GSI

FP7 HadronPhysics2 JRA: 9/2007Proposal: “Ultra-thin silicon tracking and vertex detection systems“

2009-mid 2011 spokesperson: J.H.

... 3 sub-projects ... accepted by HadronPhysics2 ... accepted by EC ... finalization of contract awaited ... start Jan. 2009

R&D on demonstrators of the CBM STS module ... very active research program

therein embedded:

ISTC project # 3540: “CBM Silicon Tracker“ (GSI, KRI St. Petersburg, MSU Moscow, IPHC Strasbourg)

Finnland:FAIR member state, in-kind contribution to CBM, PANDA, EXL, R3B

"single or double-sided rad-hard microstrip detectors"

project under definition

GSI R&D cooperations:

GSI-Kiev Inst. for Nucl. Research

J.M. Heuser − Status of the Silicon Tracking System

slide33

Summary

  • Many research activities on the STS ongoing:
  • ... from simulations ... over detector R&D ... to system design ...
  • True milestone reached: First successful in-beam system test
  • Project planning progressing for the R&D phase up to the TDR
  • Groups and tasks are forming
  • IMoU – first draft existing
  • Important motivation for our work: CBM needs the STS available from "day-1 physics" at SIS100
  • (see Peter Senger's introductory presentation, 14.10.2008)

J.M. Heuser − Status of the Silicon Tracking System