The antiproton interaction with an internal 12C target inside the HESR ring at FAIR

5th Target Fabrication Workshop

Introzzi, R.^1,2 ; Balestra, F.^1,2 ; Lavagno, A.^1,2 ; Scozzi, F.^1,2 ; Younis, H.^3

Department of Applied Science and Technology, Politecnico di Torino, c.so Duca degli Abruzzi 24, Torino

10129, Italy^1

INFN-Sezione di Torino, C/o Politecnico di Torino, c.so Duca degli Abruzzi 24, Torino

10129, Italy^2

Department of Physics, COMSATS Institute of Information Technology, Park Road, Islamabad

44000, Pakistan^3

关键词: Antiproton beams;    Beam-steering;    Hyperon production;    Satisfactory solutions;    Secondary interactions;    Side effect;    Solid targets;    Target materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/713/1/012004/pdf
DOI  :  10.1088/1742-6596/713/1/012004

来源: IOP

【 摘 要 】

In order to fulfill the goal of producing higher rates of doubly strange hyperons, the PANDA collaboration will use the antiproton ring HESR at the future facility FAIR. The low energy hyperon production by an antiproton beam requires to insert a solid target inside the ring. Unwanted side effects of such an insertion are the overwhelming amount of annihilations, which would make the detectors blind, and the fast depletion of the bunch, which circulates inside the ring. The choice of the target material impacts the hyperon production yield: Carbon turned out to provide enough initial hyperon deceleration and keep secondary interactions below a tolerable level. The use of a very thin Diamond target, together with beam steering techniques, seems to be a satisfactory solution to the above problems and will be described hereafter.