Speaker
Mr
Tsviki Y Hirsh
(Weizmann Institute of Science)
Description
Intense neutron sources based on high current deuterons impinging a thick beryllium, lithium or carbon targets are the basis for most of SARAF (Soreq, Israel) and SPIRAL2 (GANIL, France) future applications. Both facilities will use a 40 MeV and few mA of deuterons, resulting with ~10^15 fast n/sec sources.
SARAF phase I linear accelerator consists of a RFQ and one superconducting module. During the 2009 commissioning, the linac delivered high power proton beams and accelerated deuterons. By the end of 2010 a high power 5 MeV deuteron beam is expected to be available for limited experiments.
This relatively low energy beam can already produce an intense fast neutron source. The spectra and total yield of fast neutrons depend on the choice of the converter material. We found that a target made from LiF maximizes the energy and yield of fast neutrons, and is also capable of holding ~10 kW beam power.
We introduce the concept of LiFTiT - LiF Thick Target, thermally coupled to a micro-channel water cooled copper backing. Simulations suggest a total yield of 1013 fast n/sec with neutron energies of up to 20 MeV. The high neutron yield and spectral similarity makes LiFTiT a good experimental tool for verifying isotope production schemes planned for SARAF phase II or SPIRAL2.
We present a unique experiment of 8Li production and extraction using fast neutrons from LiFTiT. The secondary production target is a 65% porous B4C in which 8Li is produced via the 11B(n,a)8Li reaction channel. The B4C target will be mounted inside a high temperature furnace for fast extraction of the short-lived isotopes. According to simulations, up to 10^9 8Li/sec are expected in this experiment.
As a results of this proposed experiment at SARAF-I, better production and extraction schemes of light RIB, of great interest in various nuclear and astrophysics related measurements, may become possible .
| Are you a student, postdoc or an attendee from an “emerging” country and would like to apply for financial support? | Yes, Student |
|---|---|
| Is this an invited talk? (please answer yes or no) | no |
| Would you prefer your contribution to be an oral presentation? (please answer yes or no) | yes |
| Would you prefer your contribution to be a poster presentation? (please answer yes or no) | no |
Author
Mr
Tsviki Y Hirsh
(Weizmann Institute of Science)
Co-authors
Dr
Dan Berkovits
(Soreq NRC, Yavne, Israel)
Dr
Ido Silverman
(Soreq NRC, Yavne, Israel)
Dr
Kuljeet Singh
(Weizmann Institute of Science, Israel)
Mr
Markus Lauscher
(RWTH Aachen University, Germany)
Prof.
Michael Hass
(Weizmann Institute of Science, Israel)
Dr
Vivek Kumar
(Weizmann Institute of Science, Israel)
