Simbol–X workshopMay 14th, 2007 The Simbol-X Detector Payload P. Laurent CEA/Saclay & APC

Simbol–X workshop May 14th, 2007

The Simbol-X Detector Payload

P. LaurentCEA/Saclay & APC

Simbol–X workshop May 14th, 2007

Collimator : ~ 2 m long graded shield. Full out of FOV sky closed with associated sky-shield on mirror S/C.

The detector payload

Focal plane assembly

Warm electronics

Simbol–X workshop May 14th, 2007

Focal plane assembly

Simbol–X workshop May 14th, 2007

The focal plane assembly

• Spectro-imaging system 0.5-100 keV, fast reading• Full size : 8x8 cm2, 128x128 pixels of 625 m• Operation at ~ -40°C

Low energy detector (450 m Silicon)

High energy detector (2 mm Cd(Zn)Te)

Active and passive shielding

Simbol–X workshop May 14th, 2007

Low energy detector (MPE/IAAT)Macro Pixel Detector with integrated DEPFET

• Low power consumption• Internal amplification• Active Pixel Sensor type• 100 % filling factor• Adjustable pixel size (50 m to 1

mm)• Fast, parallel readout possible

625 μm²

0 1000 2000 3000 4000 5000 6000 70001

10

100-20 °C

Cou

nts

Energy (eV)

~ 130 eV FWHM @ -20°C

See Peter Lechner presentation !

Simbol–X workshop May 14th, 2007

High Energy Detector Basic Brick (CEA/Saclay)

• Electronics : 32 channel front end chip (IdeF-X) under development and tests

• Hybridization : on going qualification of process, 64 pixels “caliste” modules realized

• Detectors : 2 mm thick pixellated CdTe or CdZnTe crystals, under tests and promising

-18° / 400V / CdTe Schottky

1.0 keV FWHM

1 mm / 64 pixels

Simbol–X workshop May 14th, 2007

Test benches ready for systematic current and spectroscopy measurements of different types of CdTe and Cd(Zn)Te

HED Detectors Tests (CEA/Saclay)

Simbol–X workshop May 14th, 2007

IDeF-X V2 under test – Received on 1st of February 07– Step 1 : Basic behavior

•Slow control ok, – Trigger, parameter tuning, – data acquisition

•Acquisition and modes ok•Prototype software ok•Test channel ok

– Step 2 : Performances •On going•Full Multi-channel started

– Ready for SEL and SEU tests

HED Front End Tests (CEA/Saclay)

Simbol–X workshop May 14th, 2007

CEA/DAPNIA – CNES – 3D plus

First performance evaluation of HED Calistes w/o CdTeFirst tests Actual results

Gain

Noise performances

High uniformity of the matrix in gain and noise

Simbol–X workshop May 14th, 2007

The high energy focal plane building

One module256 pixels~ 1x1 cm2

One sector8 modules2048 pixels

The focal plane8 sectors16384 pixels

Simbol–X workshop May 14th, 2007

Background reduction in

Simbol-X• Photons background outside the FOV: passive shielding around the detectors + collimator + sky shield• Particles induced background: plastic scintillators around the detectors

Simbol–X workshop May 14th, 2007

Passive shielding

Plastic scintillator

LED

HED

Thermal Isolation

PM

WLS optical fibers

Simbol-X focal plane shielding

Simbol–X workshop May 14th, 2007

The focal plane passive shielding graded shield

Tantalum 3 mm

Aluminum 0, 27 mm

Carbon 0,1 mm

Tin 2,2 mmCopper 0,48 mm

material 1 material 2 material 3

photon X/ γX-ray fluorescence E1

X-ray fluorescence E2

X-ray fluorescence E3 Photon

energy below the LED low threshold

E3 < E2 < E1

Composition and thickness of the shields

layers have been optimized to suppress

all sky radiation and the resulting fluorescence

…

Simbol–X workshop May 14th, 2007

Plastic scintillator

WLS fibers

main PM 1

main PM 2

redundant PM 1

redundant PM 2

The focal plane anticoïncidence:Plastic read by fibers and 16 channels PM

Multianod PM 16 ch.

Simbol–X workshop May 14th, 2007

The focal plane assembly

Base Plate

Lower AC

LED et HED

Upper AC

Support

Simbol–X workshop May 14th, 2007

Inside the protective enclosure …

Calibration wheel

FPA

Protective enclosure

Simbol–X workshop May 14th, 2007

The collimator

Simbol–X workshop May 14th, 2007

Collimator geometry vs satellite movement

Simbol–X workshop May 14th, 2007

Collimator geometry vs satellite movement

Simbol–X workshop May 14th, 2007

Collimator geometry vs satellite movement

Simbol–X workshop May 14th, 2007

2m 2

0-The Honeycomb Structure has been validated by the CNES.-3 options have been studied with differents parameters for the honeycomb-Actually we have a solution fitting with the mass budget and with a first resonnant mode above 100Hz

1m 28

Total Mass : 23 kgGraded Shield: 6 kgStructure: 17 kg

The collimator

Simbol–X workshop May 14th, 2007

Warm electronics

Simbol–X workshop May 14th, 2007

FPA electronics scheme

Simbol–X workshop May 14th, 2007

DPDPA1DPDPA2 HEDE

LEDE ACDE

Green: Power SupplyOrange: FPA LinkBlue: Data LinkPink: TM/TC Link

Goals :

-Minimize the length of the cables-Thermal insulated from Stable Platform

FPA warm electronics boxes

Simbol–X workshop May 14th, 2007

Thank you !

Simbol–X workshop May 14th, 2007

LEDA

HEDA

Platform

ACDA

PERADIATOR@ -60°C

Tspace@ 4K

TIF= -45

TIF= -48,3

T= -57

T= +20

h=1 W.K-1

h=3 W.K-1

T= 1,8T= 19

FPA thermal budget

Simbol–X workshop May 14th, 2007

FPA mass budget

Mass /kg Marge / % Marged Mass / kg

FPA      Protective Enclosure 11 15% 12,65

Mechanical IF 1,2 20% 1,44HEDA FP 0,86 20% 1,03

HEDA/LEDA Mechanical IF 0,3 20% 0,36LEDA FP 0,81 20% 0,97

LEDA+HEDA Mechanical Structure 0,5 20% 0,60

Anticoïncidence + Support 26 20% 31,20Calibration Wheel 2,5 20% 3,00

Connectors 1 15% 1,15Miscellaneous 1 30% 1,30

Total FPA 45,17   53,70Total Collimator 23,00   26,80

Total Warm electronics 32,70 38,33Total 100,87   118,83