TY - JOUR
T1 - Application of low temperature calorimeters for the detection of energetic heavy ions
AU - Meier, J.
AU - Chulkov, L.
AU - Egelhof, P.
AU - Fischer, C.
AU - Henning, W.
AU - Kienlin, A. V.
AU - Kirchner, G.
AU - Kraus, G.
AU - Weinbach, A.
PY - 1996/2/11
Y1 - 1996/2/11
N2 - The energy sensitive detection of energetic heavy ions with calorimetric low temperature detectors is investigated. The temperature readout was done with an aluminum transition edge thermometer operated at T ≈ 1.5 K. For 20Ne-ions with an energy of E = 100 MeV/u from the SIS accelerator at GSI Darmstadt the best energy resolution obtained was ΔE/E = 1.9 X 10-3. This value corresponds to the energy spread of the ion beam of the SIS. In a first application of such detectors the excitation of the giant resonance in lead nuclei via the reaction natPb(20Ne, 20Ne′)natPb* was investigated by separating inelastically from elastically scattered 20Ne-ions in the energy spectrum. At a scattering angle ΘLab = 3° the excitation energy and the strength of the giant resonance were found to be in good agreement with theoretical predictions. In a first test with an extracted cooled 238U-beam with an energy of E = 360 MeV/u from the storage ring ESR with an intrinsic beam energy spread of ΔE/E ≤ 2 × 10-4 an energy resolution of ΔE = 97 MeV (ΔE/E = 1.1 × 10-3) was measured. The baseline noise was ΔE = 17 MeV. Further improvement of the energy resolution seems possible.
AB - The energy sensitive detection of energetic heavy ions with calorimetric low temperature detectors is investigated. The temperature readout was done with an aluminum transition edge thermometer operated at T ≈ 1.5 K. For 20Ne-ions with an energy of E = 100 MeV/u from the SIS accelerator at GSI Darmstadt the best energy resolution obtained was ΔE/E = 1.9 X 10-3. This value corresponds to the energy spread of the ion beam of the SIS. In a first application of such detectors the excitation of the giant resonance in lead nuclei via the reaction natPb(20Ne, 20Ne′)natPb* was investigated by separating inelastically from elastically scattered 20Ne-ions in the energy spectrum. At a scattering angle ΘLab = 3° the excitation energy and the strength of the giant resonance were found to be in good agreement with theoretical predictions. In a first test with an extracted cooled 238U-beam with an energy of E = 360 MeV/u from the storage ring ESR with an intrinsic beam energy spread of ΔE/E ≤ 2 × 10-4 an energy resolution of ΔE = 97 MeV (ΔE/E = 1.1 × 10-3) was measured. The baseline noise was ΔE = 17 MeV. Further improvement of the energy resolution seems possible.
UR - http://www.scopus.com/inward/record.url?scp=0000796720&partnerID=8YFLogxK
U2 - 10.1016/0168-9002(95)01104-8
DO - 10.1016/0168-9002(95)01104-8
M3 - Article
AN - SCOPUS:0000796720
SN - 0168-9002
VL - 370
SP - 259
EP - 262
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 1
ER -