TY - JOUR
T1 - Decay pion spectroscopy
T2 - A new approach
AU - Margaryan, A.
AU - Ajvazyan, R.
AU - Grigoryan, N.
AU - Kakoyan, V.
AU - Khachatryan, V.
AU - Vardanyan, H.
AU - Zhamkochyan, S.
AU - Achenbach, P.
AU - Pochodzalla, J.
AU - Nakamura, S. N.
AU - Nagao, S.
AU - Toyama, Y.
AU - Annand, J. R.M.
AU - Livingston, K.
AU - Montgomery, R.
N1 - Funding Information:
This work was supported by the RA MES State Committee of Science , in the frames of the research projects 14CYC-1c11 , 16-A1c66 and 15T-2B206 , the International Science and Technology Center, Russia Project #A-2390 , the UK Science and Technology Facilities Council grant ST/L005719/1 , the DAAD PPP, Germany 57345295 /JSPS Research Cooperative Program, the Deutsche Forschungsgemeinschaft (DFG) Germany through Research Grant PO 256/7-1 , and by the Grant-in-Aid for Scientific Research on Innovative Areas ”Toward new frontiers : Encounter and synergy of state-of-the-art astronomical detectors and exotic quantum beams”, JSPS/MEXT, Japan KAKENHI grant numbers JP18H05459 and JP17H01121 .
Funding Information:
This work was supported by the RA MES State Committee of Science, in the frames of the research projects 14CYC-1c11, 16-A1c66 and 15T-2B206, the International Science and Technology Center, Russia Project #A-2390, the UK Science and Technology Facilities Council grant ST/L005719/1, the DAAD PPP, Germany 57345295/JSPS Research Cooperative Program, the Deutsche Forschungsgemeinschaft (DFG)Germany through Research Grant PO 256/7-1, and by the Grant-in-Aid for Scientific Research on Innovative Areas ”Toward new frontiers: Encounter and synergy of state-of-the-art astronomical detectors and exotic quantum beams”, JSPS/MEXT, Japan KAKENHI grant numbers JP18H05459 and JP17H01121. Yerevan group want to thank Prof. Ani Aprahamian for discussions.
Publisher Copyright:
© 2019
PY - 2019/8/11
Y1 - 2019/8/11
N2 - We propose a new experiment for decay pion spectroscopy of light hypernuclei at electron- and proton-beam facilities, using the recoil distance technique for identification of produced hypernuclei and a magnetic spectrometer for precise measurement of the decay pion momentum. Low-pressure MWPCs are advocated for low-energy recoil detection as they provide position and time information and are highly insensitive to gamma-ray and electron background. The position and timing characteristics of such a recoil detector were studied using ∼5 MeV α-particles. By using the present proposed approach the rate of the detected hypernuclei can be increased by one-to-two orders of magnitude compared to a recent experiment carried out at the MAMI electron accelerator in Mainz. The possibility of realizing a high luminosity decay pion spectroscopy experiment with proton beams is also discussed.
AB - We propose a new experiment for decay pion spectroscopy of light hypernuclei at electron- and proton-beam facilities, using the recoil distance technique for identification of produced hypernuclei and a magnetic spectrometer for precise measurement of the decay pion momentum. Low-pressure MWPCs are advocated for low-energy recoil detection as they provide position and time information and are highly insensitive to gamma-ray and electron background. The position and timing characteristics of such a recoil detector were studied using ∼5 MeV α-particles. By using the present proposed approach the rate of the detected hypernuclei can be increased by one-to-two orders of magnitude compared to a recent experiment carried out at the MAMI electron accelerator in Mainz. The possibility of realizing a high luminosity decay pion spectroscopy experiment with proton beams is also discussed.
KW - Decay pion spectroscopy
KW - Light hypernuclei
KW - Low pressure MWPCs
KW - Magnetic spectrometer
KW - Recoil distance technique
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U2 - 10.1016/j.nima.2019.04.063
DO - 10.1016/j.nima.2019.04.063
M3 - Article
AN - SCOPUS:85065527603
SN - 0168-9002
VL - 935
SP - 40
EP - 50
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
ER -