I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

Collaboration:University of Huelva, Spain (coordinator)

GSI-Darmstadt, Germany.University of Sevilla, Spain.CSIC-IEM Madrid, Spain.IKS-University of Leuven, Belgium.CRC Louvain la Neuve, Belgium.University of Surrey, UKFlerov Lab. Nuclear Studies, Dubna, RussiaA. Soltan Institute for Nuclear Studies, Warsaw, Poland.H. Niewodniczandki Institute of Nuclear Physics, Krakow, Poland.

The HYDE array

for the LOW ENERGY BRANCH of FAIR

I. Martel *

for the HYDE collaboration

* Department of Applied Physics, The University of Huelva, Spain

Huelva

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

At present RIB facilities we can customize our nuclear system (N,Z):

Terra incognita huge gene pool of nuclei !!

Fabricate “any”nucleus controlling the number of constituent protons and neutrons

OUR NUCLEAR WORKBENCH!

isolate and amplify specific physics or interactions

The development of Radioactive Beam Facilities (RIB) has opened new The development of Radioactive Beam Facilities (RIB) has opened new frontiers of research for nuclear physicsfrontiers of research for nuclear physics

Evolution of structure within these boundaries

1. Proton Rich Nuclei

2. Neutron Rich Nuclei

3. Heaviest Nuclei

Frontiers

Basic Idea: Study of the Structure and Dynamics of VERY Exotic Nuclei

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

Experimental quantities cross sections & relative yields: Elastic, Inelastic, Transfer, Breakup,...

Spectroscopic tools Particle Detectors + Direct Nuclear Reactions - not too many degrees of freedom - precise knowledge of theoretical framework (CC) - well tested with stable nuclei

Exotic (N,Z) combinations isospin degree of freedom- Evolution of shell structure phase shape transitions, - Halo nuclei- Cluster structures- Beyond the drip lines unbound nuclei & resonances- Reaction mechanisms and dynamics of exotic systems

19C Heaviest Halo Nucleus

[T + εi – E + <ψi(r)IV(r,R)Iψi(r)>] χi(R) = <ψi(r)IV(r,R)Iψk(r)> χk(R)

Φ(r,R) = ψ1(r)χ1(R) + ψ2(r)χ2(R) + …..

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

TOF vs E A

DE vs E A & Z

Experimental Methods

. vs E Kinematics/ Reaction channel

n-γ discrimination+ TOF RADIOACTIVE

BEAMCharged particles

SILICONARRAY

Neutrons

target

NEUTRONARRAY

Tracking devices

GAMMA ARRAY

AGATA

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

Reactions with drip-line nuclei using the HYbrid DEtector array (HYDE)

Motivation: Study of Direct Nuclear Reactions induced by drip line nuclei with half lifes around/below the MILISECOND the most difficult ones?

HYDE physics complementary with other existing projects:

The Low-Energy Branch at FAIR an unique facility!!

Spectroscopic information: B(Eλ) values, quadrupole deformations, clustering, coupling to the continuum,…Collective phenomena and nucleon-nucleon correlations

“Low energies” radioactive beams from 5 up to 30 MeV/u

What to measure?: angular distributions: elastic and inelastic scattering, break-up, transfer reactions,…

FAZIA & GASPARD (GANIL/SPIRAL2) half life down to 10ms

EXL (FAIR) half life down to s

HYDE(FAIR/LEB) half life down/below to ms drip line!!

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

Low Energy Branch

FAIR – Facility for Antiproton and Ion Research

UNIVERSITY OF HUELVA

Duty Coordinate the construction of the HYDE array for charged particles

FINURA: FPA2006

600m

m

600mm

FAIR/HYDE2006-2012

SPIRAL2: FAZIASYNERGY!

SPIRAL2: GASPARDSYNERGY!

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

-Preliminary concept design/DSSSD based….- This design will change...

600mm

600m

m

600mm 300mm?

300m

m

300mm

AGATA CHAMBER

Target

HYDE//MECHANICS/

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

SOME PRELIMINARY IDEAS…

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

RIB intensities after Super-FRS

“VERY” HEAVY IONS (mass > S, Cl) INVERSE KINEMATICS

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

Courtesy of C. Scheidenberger

E = 3 MeV/u

FAIR/NUSTAR/Low-Energy Branch: energy and angular spread

Typical figures:

300 MeV/u: E ~ 0.3 MeV/u ~ 5 mrad 5 MeV/u: E ~ 3 MeV/u ~ 200 mrad spot ~ 3cm !!

Remarks:1. FAIRBeam tracking system:

Accurate position + energy

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

Tracking Conceptual Design

Target

Tracking detectors

HYDE Telescope:DSSD+DE+E

TOF

BA

C

150 mm

150 mm2000 mm

Reaction chamber

Choice of tracking detectors:

Diamond (GSI)

SeD (Saclay)

SeD tracking detectors (VAMOS)//GANIL

UNIVERSITY OF SEVILLA

Ivan Mukha

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

Physics at 3-30 MeV/u- Direct Nuclear Reactions, Clustering, Fusion Evaporation, Transfer, Deep Inelastic, etc.

The HYbrid DEtector concept (HYDE)

HYDE

Goals: - Charged particles.- Good charge and mass identification.- Efficiency (>60%).- Good energy resolution (<150 keV).- Angular resolution (<1º).

Beam properties: - Large emitance - Low intensity <107 pps.

Constraints:- use with other detectors (Neutron array, Calorimeter, AGATA, etc

- use at other RIB facilities (SPIRAL2, ISOLDE, LEGNARO,…)

- Modularity and portability

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

-6,0x10-7-4,0x10-7-2,0x10-7 0,0 2,0x10-7 4,0x10-7 6,0x10-7-4,0x10-3

-3,5x10-3

-3,0x10-3

-2,5x10-3

-2,0x10-3

-1,5x10-3

-1,0x10-3

-5,0x10-4

0,0

5,0x10-4

volts

seconds

6Li at 7 MeV

Target holderLinear/rotary

6 way crossISO200

FlexibleISO 100Turbo

Pump

4 way crossISO250/ISO100

Lemofeedtroughs

Ion beam

View portScintillator

120 cm

Target holderLinear/rotary

6 way crossISO200

FlexibleISO 100Turbo

Pump

4 way crossISO250/ISO100

Lemofeedtroughs

Ion beam

View portScintillator

120 cm

R&D ON PSA LOW ENERGY PS DATA BASE

CNA-Tandem (Sevilla): 4He & 6,7Li, 1 MeV stepIn collaboration with FAZIA

FEBRUARY 5-9/ 2007

0,5 1,0 1,5 2,0 2,5 3,015

20

25

30

35

40

45

50

55

60

65

Ris

e T

ime

(ns)

Energy

6Li

7 MeV 9 MeV 12 MeV

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

E1 E2 EHYDE TELESCOPE DEMONSTRATOR (2010):(PROPOSAL FOR OCTOBER MEETING @ Huelva)

- 3 stage device - Thin Silicon (50um) + Thick Silicon (>1 mm) + Scintillator (5 cm) - MULTI-STRIP philosophy

4 DETECTOR UNITS:

1 Double Sided Sided Strip detector + PAD Si + Scintillator :

- E1+XY(50um) + E2(> 1mm) + E3-CsI(Tl)-5cm- 10 mm x 10 mm total active area- 3 x 3 strips each side 3mm strip pitch TOTAL 9 x 4 = 36 pixels

Combine Particle identification techniques:

- ToF modular system- DE/Et thin DE- Kinematics angular resolution- Pulse Shape Analysis Fast FEE + Neural Network Algorithms

FAZIA- PSA studies

L. B

ard

elli e

t al., N

PA

74

6(2

00

4)2

72

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

Fully Digital Electronics system

1. Compactness integrated system2. Vacuum proof (preamp + digitizers!)3. Digital energy, pulse shape (and timing?): current, charge, energy, time4. Variable dynamic ranges5. FPGA’s + DSP’s for PSA and control

6 Slow control & monitoring (gains, thresholds, temperature, bias,… -> OPTIMIZATION7. Calibration procedures (E, Time, …)8. Portability/Modularity9. Low cost

Si Si CsI (Tl)

SLOW digitizer125 MHz

12 bit, Q(t)

FAST digitizer2 GHz

12 bit, I (t)

DSP/FPGA

Energy

I dentity

Low RatePulse Shape

Time

Trigger out

Synchronization

Monitoring

Slow control

PreampI (t), Q(t)

VACUUM

Si Si CsI (Tl)

SLOW digitizer125 MHz

12 bit, Q(t)

FAST digitizer2 GHz

12 bit, I (t)

DSP/FPGA

Energy

I dentity

Low RatePulse Shape

Time

Trigger out

Synchronization

Monitoring

Slow control

PreampI (t), Q(t)

Si Si CsI (Tl)Si Si CsI (Tl)

SLOW digitizer125 MHz

12 bit, Q(t)

FAST digitizer2 GHz

12 bit, I (t)

DSP/FPGA

Energy

I dentity

Low RatePulse Shape

Time

Trigger out

Synchronization

Monitoring

Slow control

PreampI (t), Q(t)

VACUUMVACUUM

CO

MPU

TER

& S

TO

RA

GE

HYDE FEE DEMONSTRATOR (2010)(PROPOSAL FOR OCTOBER MEETING @ HUELVA!!)

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

Sampling N° of bits: 12Sampling rate: 2 GHz, BW > 300 MHz Over what duration? 250 ns

Control & Command Temperature, current, voltageGain, thresholds Calibration requirements: E, Time

Energy Dynamic range: 300 KeV 1 GeV Energy resolution: < 150 KeV

Detector HYbrid: Silicon + Scincillator

Rise time and fall time ~ 10 ns-250 nsRecoil Decay Tagging? NOEnvironment: vacuum

Time Range: 1ns, Resolution: 10% (100 ps) Time stamping

Power constrain : For Vacuum ~ mW/channel

Trigger: Depends on experiment

Geometrical & constrains Volume of instrument: Ø 500 mm Pre-amp, Cabling, FEE card N° of channels/detector: 32 (E+T+PSA info)N° of detectors: 150

Data Filtering Pulse-shape to Z & A up to S/Cl isotopesFPGA+DPS board in air

PREAMP:Bandwidth: 0.003 - 2 GHz, Gain > 40 dBLow Noise (<3 dB), Output: Q(t), I(t), dT (analog)

Rate per channel (typical) 100HzGlobal rate: 1 MHz (x PSA info)

I. MARTEL SGFDC MEETING @ UNIVERSITY OF HUELVA JULY 2007

FIN