Instytut Fizyki Jądrowej im. Henryka Niewodniczańskiego Polskiej Akademii Nauk Electronics for...

Instytut Fizyki Instytut Fizyki JądrowejJądrowejim. Henryka Niewodniczańskiegoim. Henryka Niewodniczańskiego

Polskiej Akademii NaukPolskiej Akademii Nauk

Electronics for PARISElectronics for PARIS

Searching for optimum Searching for optimum solutionsolution

Piotr Bednarczyk

P.BednarczykP.Bednarczyk

OutlineOutline

PARIS

Anc. detector –RFD if time (and audience)

permits…


PARIS design goals:PARIS design goals:

Design and build high efficiency detector consisting of 2 shells 2 shells for medium resolution spectroscopy and calorimetry of rays in large energy range. Inner sphere, highly granular, will be made of new crystals LaBrLaBr33(Ce)(Ce), rather short (up to 2-4 inches). The readout might be performed with PMTs or APDsPMTs or APDs.

IInner-sphere nner-sphere will be used as a multiplicity filter multiplicity filter of high high resolutionresolution, sum-energy detector (calorimeter) and detector for the gamma-transition up 10 MeV 10 MeV with medium energy resolution (better than 3%3%). It will serve also for fast timing application (t<1nst<1ns).

Outer sphereOuter sphere, with lower granularity but with high volume detectors, rather long( at least 5 inches), could be made from conventional crystals (BaF2 or CsI), or using existing detectors (Chateau de Crystal or HECTOR). The outer-sphere will measure high-energy photons or serve as an active shield for the inner one.


Compatibility with other devices is keyCompatibility with other devices is key

+ NEDA,HYDE, RFD etc……+ NEDA,HYDE, RFD etc……


Basic requirements for the PARIS Basic requirements for the PARIS electronicselectronics

Serve Serve 200-1000200-1000 detector channels ( detector channels (energyenergy andand timetime perper channel)channel)

Deal with Deal with fastfast signalssignals of LaBr of LaBr33: risetime <1ns, decaytime : risetime <1ns, decaytime ~20 ns~20 ns

Stand rates up to Stand rates up to 100 100 kHz kHz per channel per channel

Perform Perform pulse shape analysis pulse shape analysis for neutron and gamma for neutron and gamma discrimination discrimination (?) (?) and for disentanglement of overlapping and for disentanglement of overlapping signals fromsignals from phoswitchphoswitch detectors detectors

Keep time resolution better than Keep time resolution better than 1 ns1 ns, for TOF purposes, for TOF purposes

Measure energies up to Measure energies up to ~50 MeV ~50 MeV withwith 3%3% resolution.resolution.

Trigger less Trigger less readout with readout with timestampingtimestamping

Provide a gamma time relative to an Provide a gamma time relative to an external signal external signal and and a gamma energy (or series of energies if from phoswich) a gamma energy (or series of energies if from phoswich) with a corresponding timestampwith a corresponding timestamp


GAMMA-TELESCOPEGAMMA-TELESCOPE

•LaBr3•(2”x2”)

•CsI or BaF2•(2”x6”)

•PMT •PMT

•E1

•t1•t2

•E2

•CsI or BaF2•(2”x6”)• A

PD

•PMT

•E1

•t1 •t2

•E2

•CsI(NaI)•(2”x6”)

•PMT

•E1,E2

•LaBr3•(2”x2”)

•LaBr3•(2”x2”)

I

II

III

•T1,T2


CAEN V1751 1 or 2 GHz digitizerTNT2 x4 (2.5 ns sampling)

Phoswich tests in StrabourgPhoswich tests in Strabourg

O.Dorvaux, D.Lebhertz, C.Finck, et al

LaBr3

NaI


Possible solutions for the PARIS FEPossible solutions for the PARIS FE

A hybrid consisted of analog and digital electronics for time and energy determination respectively

Fully digital electronics with the fastest possible flash ADC (3-8Gsample, 8 bit ?)

Milano solution: a card consisted of a first analog stage used to shape a LaBr3 signal and a consecutive digital part (100MHz sampling frequency) that is used to extract both energy and time

(sub ns precision)


Krakow-GANIL collaboration on a common digitizer Krakow-GANIL collaboration on a common digitizer for SPIRAL2for SPIRAL2

Krakow, April 8, 2009Krakow, April 8, 2009

Integration of the AGATA GTS Integration of the AGATA GTS functionality withfunctionality with GANIL NUMEOX2 GANIL NUMEOX2 (VIRTEX)(VIRTEX)


AGAVA DescriptionAGAVA Description

MAGAVA Interface is a 1-unit wide A32D32 type VME/VXIVME/VXI slave module. It is also the carrier board for the GTS carrier board for the GTS (Global Trigger and Synchronization) mezzanine card used in the AGATA experiment for the global clock and time stamp distribution.

The main task of the AGAVA is to mergemerge the triggerless time stamp-based system with an acquisition system using trigger, based on the VME or VXI Exogam-like environment.

It can also connect systems based on the triggers with the VME Metronome and Shark_link systems.

The logic and tasks are controlled by the FPGA Virtex II Pro.


Example of merging ancillaries to AGATA DAQ through Example of merging ancillaries to AGATA DAQ through AGAAGATA TA VVME ME AADAPTERDAPTER

Event Builder

PSA

Ancillary Merge

LLP

Digitizer

Tracking

Data analysis

GTS tr.

DATA Clock counterEvent Number

Ancillary Analogue FEE

AGAVA

GTS supervisoSr

prompt trigger <500ns

Ancillary VME

Ancillary readout

GTS tr.

Req.Trig-Val/Rej

Req.

Pre-processing

Slow control:

Kmax, Labview, Midas, etc.

VME processor, DSP software

NARVAL producer:

filtering, kinematics reconstr.

USER provided:USER provided:


AGAVAAGAVA


Block Diagram of NUMEXO2Block Diagram of NUMEXO2

•Power

•FPGA•Virtex 5

•8 Fast ADCs•14 bits, 100MHz

•GTS mezzanine

•START/STOP

•Inspections

•Ethernet•Slow Control

•Optical Link•(ADONIS)

•Ethernet Gbit


• ADC Logic- FADC samples collection- Digital Processing

- Trigger - Data formatting- Inspection control

•PPC•Common Logic

•GTS Fanin •ADC Logic Interface

•Clocks•(Local &

•Recovered)

•Delay •Line

•Optical• Link

•Flash (Linux)

•SRAM•(Oscilloscope)

•PROM• (VHDL)

•PROM•(VHDL)

•DPRAM•(Physics, •ADONIS)

•Ethernet •100

•Ethernet •Gigabit

•PCIe •(Adonis)

•FADC

•DACs•(Test, control,

•inspection)

•MGT•Clocks

•Fast serial links

•Parallel links•Slow control

•Serial•link

•SDRAM

•Serial link

•Mux

GTS functions embedded in the Virtex 5 of NUMEOX2


The ancillary detector : The ancillary detector : RRecoil ecoil FFilter ilter DDetectoretector

LNL-02.07.08

Installation Installation at GASP at GASP 20082008

Experiments 2009Experiments 2009

ToF+(-HI) =V


Improvement of Improvement of -spectra by a coincident -spectra by a coincident recoil detection (with recoil detection (with RFDRFD))

200 300 400 5000

400

800

1200

cou

nts

recoil

100

-ray energy (keV)

220Th221Th

219Ra218Ra217Ra

Th X-rays

Pb X-rays

92 MeV 16O + 0.4 mg/cm2 208Pb

Heavy systems: Heavy systems: fission background reductionfission background reduction low cross sections low cross sections 0.1 mbarn0.1 mbarn

68 MeV 18O + 0.8 mg/cm2 30Si

Large recoil velocity: Large recoil velocity: reduction of the Doppler broadeningreduction of the Doppler broadening

rec~3%


Estimation of a short lifetime based on the Estimation of a short lifetime based on the recoil velocity measurement (with recoil velocity measurement (with RFDRFD))

Energy of a Energy of a -ray emitted in a target -ray emitted in a target (B) is not sufficiently Doppler (B) is not sufficiently Doppler correctedcorrected

A level lifetime can be expressed by A level lifetime can be expressed by number of decays in vacuum (A) number of decays in vacuum (A) relative to a total relative to a total -line intensity -line intensity (A+B) (A+B)


EUROBALL + EUCLIDESEUROBALL + EUCLIDES

Variety of shapes in Variety of shapes in 6969AsAs

At HS (I~20) expected prolate SD, At HS (I~20) expected prolate SD,

Low spin prolate triaxial, Low spin prolate triaxial,

GS oblateGS oblate

(g9/2)1 (g9/2)2 , Imax=49/2(g9/2)1 (g9/2)2 , Imax=49/2

I.Ste

fanesc

u e

t al,.

PR

C 7

0 0

44

30

4 (

20

04

)

A.B

ruce

et

al,.

PR

C 6

2 0

27

30

3 (

20

00

)

69AsGASP+RFDGASP+RFD

40 fs 40 fs ~0.5 ~0.5

GASP + RFD GASP + RFD ‘2009‘2009

40Ca(32S,3p)69As


PerspectivesPerspectives fo RFD fo RFD

RFD at intense stable beams : RFD at intense stable beams : EXOGAM (GANIL)EXOGAM (GANIL) GALILEO(GASP)GALILEO(GASP) AGATAAGATA

RFD may be a good solution for measurements with RFD may be a good solution for measurements with radioactive beamsradioactive beams projectiles do not irradiate any part of the setup, can be transported to a FC projectiles do not irradiate any part of the setup, can be transported to a FC

distant from the experimental area.distant from the experimental area. detectors are far from the beam-line, are not sensitive to any kind ofdetectors are far from the beam-line, are not sensitive to any kind ofradioactivityradioactivity RFD doesn’t need much space, however the distance target-RFD should be adjusted RFD doesn’t need much space, however the distance target-RFD should be adjusted

to a particular experiment in order to optimize the projectile/recoil separation and to a particular experiment in order to optimize the projectile/recoil separation and the efficiencythe efficiency

Possible future modifications Possible future modifications replacement of scintillators by ultra fast diamond replacement of scintillators by ultra fast diamond

detectorsdetectors new (more compact) chambernew (more compact) chamber use of digitalal electonicsuse of digitalal electonics

Instytut Fizyki Jądrowej im. Henryka Niewodniczańskiego Polskiej Akademii Nauk Electronics for...

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