Cross section measurements at LNL

M.Mezzetto (INFN-Pd) on behalf of

INFN-LNL: M. Cinausero, G. De Angelis,G. Prete

The INFN Legnaro LaboratoryThe INFN Legnaro Laboratory

3 Elettrostatic Accelerators3 Elettrostatic Accelerators- Tandem XTU (16 MV)- Tandem XTU (16 MV)- Van der Graff (7 MV)- Van der Graff (7 MV)- An 2000 (2 MV)- An 2000 (2 MV)

1 Linac1 Linac- Alpi SC- Alpi SC

1 RFQ 1 RFQ injectorinjector- - Piave SCPiave SC

Experimental HallsExperimental Halls- - AboutAbout 10 10 Detection Detection

systemssystems

1 RIB Facility planned1 RIB Facility planned- SPES (ISOL)- SPES (ISOL)

A new approach for -beam

Beam cooling with ionization losses – C. Rubbia, A Ferrari, Y. Kadi and V. Vlachoudis in NIM A 568 (2006) 475–487

“Many other applications in a number of different fieldsmay also take profit of intense beams of radioactive ions.”

7Li(d,p)8Li6Li(3He,n)8B

7Li6Li

See also: Development of FFAG accelerators and their applications for intense secondary particle production, Y. Mori, NIM A562(2006)591

Cross section and Angular distribution measurements

20-30 MeV

Experiments at Laboratori Nazionali di Legnaro

TANDEM-LINAC accelerator complex

Inverse kinematic reaction

7Li beam at 10-30 MeV Target: deuterated plastic

7Li + d 8Li + p

Protons detected with 8LP: E-E hodoscope Si+CsI(Tl)

Detection Energy range: 2° to 24° : 1-64 AMeV 34° to 177°: 1-34 AMeV,

Experiments at Laboratori Nazionali di Legnaro

7LiBall: 30 cm inner diameter

126 E-E telescopes (collimated + 1°)

300 m Si - 5 mm CsI(Tl) angular range 34° to 177°7 rings, 18 telescopes per ring.

126 energy spectra 7 angles(per run)

Experiments at Laboratori Nazionali di Legnaro

7Li

First Experiment performed in July 2008

Inverse kinematic reaction:7Li + Cd2 target E=25 MeV

Data reduction in progress

Problems (technical):• Background reactions on the C Matrix• Proton spectra contaminated• Absolute Normalization needed

Problem (political):• Shortening in humane resources due to Italian

government cut of INFN positions

Possible future improvements:

a) Better REACTION IDENTIFICATION detecting HEAVY FRAGMENTS in coincidence with p

Detector developments - TOF measurements of Li ions Electromagnetic separation (MAGNEX spectrometer, available at LNS)

b) More CLEAN TARGETDuterons adsorbed into heavy matrix (Pt, no reaction on matrix)Gas jet target (not available at LNL)Cryogenic target (not available at LNL)

What next

Analyze data and evaluate contamination problems

EU support for a research fellowship