1. LaBr3 Ball at HIE-ISOLDE
On behalf of Dr Ushasi Datta Pramanik

2. (SHIBA) Saha-HIE-ISOLDE Big LaBr2 Array or SSIMBA
*High efficiency, high energy photon spectrometer
Original contribution at ISOLDE-CERN
Unique photon spectrometer in the world
FAST timing, Good energy resolution, high efficiency
Upto 20 MeV  ~50% efficiency for full array
Space required for array 2.5mx3.5 m
SINP can provide ~40% of total array at present
i.e. ~20% efficiency (secured funds)
Silicon strip array (BARC+Madrid+SINP+……….)
Wide range of physics problem of exotic nuclei can be address
Welcome to other groups

3. Detector and Test bench @SINP
Big crystal size LaBr3 detectors :
Dimension: 7.6 cm (dia)
15cm (length))

4. Response of different LaBr3(Ce) detectors for 60Co
Energy spectra for 2 Medium-size LaBr3 crystal in coincidence
Time resolution
σt ~ 140 ps
Corresponding TAC signal
Big size detectors
2MeV
NaI 8 %
BGO 6 %
LaBr3 2 %
Time resolution 15cm LaBr3
σt ~ 225 ps

5. LaBr3 array at HIE-ISOLDE
LaBr3 scintillator array of 15cm long crystal
ε ≈ E~10-20 MeV, dE~1%, t~ 225 ps (tested at lab.)
Easy to move and be used at decay station
Independently or in combination with Miniball.

6. Physics with SHIBA
Can explore novel phenomena and properties of exotic nuclei
Study of Unbound states and coupling to the continuum.
Pygmy resonances
Life time of exotic states, exotic shapes, cluster states, single particle
states, etc.
Astrophysical (n,γ), (p,γ) REACTION CROSS –SECTIONS measurements.
At the decay station in combination with
charged particle and neutron detector.
Studies of proton or alpha / gamma width of states near
particle threshold relevant for astrophysics.