Symmetric Lattice for the NICA Collider

Abstract

A new NICA collider lattice with the symmetric arrangement of triplets at the interaction points and a shifted working point (Qx,y ∼ 9.1) is proposed and calculated. This lattice involves two rings (ring A and ring B) with a superperiodicity of 2 and different optics. It is shown that, while maintaining the nominal beta function at the interaction points (βx,y= 0.35 m) with allowance for all perturbing factors, the new lattice allows DA ∼ 75 mm to be obtained in both rings, which is considerably larger than the collider chamber acceptance (ACC = 40 mm mrad).