DALI2: A NaI(Tl) detector array for measurements of $\gamma$ rays from fast nuclei

S. Takeuchi; T. Motobayashi; Y. Togano; M. Matsushita; N. Aoi; K. Demichi; H. Hasegawa; H. Murakami

doi:10.1016/j.nima.2014.06.087

DALI2: A NaI(Tl) detector array for measurements of $\gamma$ rays from fast nuclei

Nuclear Experiment 2014-07-30 v2

Authors: S. Takeuchi , T. Motobayashi , Y. Togano , M. Matsushita , N. Aoi , K. Demichi , H. Hasegawa , H. Murakami

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

A NaI(Tl) detector array called DALI2 (Detector Array for Low Intensity radiation 2) has been constructed for in-beam $\gamma$ -ray spectroscopy experiments with fast radioactive isotope (RI) beams. It consists typically of 186 NaI(Tl) scintillators covering polar angles from $\sim$ 15 $^{\circ}$ to $\sim$ 160 $^{\circ}$ with an average angular resolution of 6 $^{\circ}$ in full width at half maximum. Its high granularity (good angular resolution) enables Doppler-shift corrections that result in, for example, 10% energy resolution and 20% full-energy photopeak efficiency for 1-MeV $\gamma$ rays emitted from fast-moving nuclei (velocities of $v/c \simeq 0.6$ ). DALI2 has been employed successfully in numerous experiments using fast RI beams with velocities of $v/c = 0.3 - 0.6$ provided by the RIKEN RI Beam Factory.

Keywords

DALI2 NaI(Tl) detector array gamma-ray spectroscopy fast radioactive isotope beams Doppler-shift correction in-beam experiments RIKEN RI Beam Factory

Cite

@article{arxiv.1403.5349,
  title  = {DALI2: A NaI(Tl) detector array for measurements of $\gamma$ rays from fast nuclei},
  author = {S. Takeuchi and T. Motobayashi and Y. Togano and M. Matsushita and N. Aoi and K. Demichi and H. Hasegawa and H. Murakami},
  journal= {arXiv preprint arXiv:1403.5349},
  year   = {2014}
}

Comments

10 pages, 8 figures

DALI2: A NaI(Tl) detector array for measurements of $\gamma$ rays from fast nuclei

Abstract

Keywords

Cite

Comments

Related papers