Asymmetric beam-beam effect study in a highly polarized electron-ion collider

A Polarized HERA Collider Electron Beam Proton Beam Beam Energy 26 − 30 GeV 800 − 930 GeV Polarization Status Polarized

1. Space quantization associated with quantized spin directions. Stern, Gerlach, 1921. 2. Atomic fine structure and electron spin magnetic moment. Goudsmit, Uhlenbeck, 1926. 3. Proton anomalous magnetic moment; μp = 2.79 nm. Stern, 1933. 4. Electron spin anomalous magnetic moment. μe = μ0 (1.00119); QED. Kusch, 1947. 5. Electroweak interference from ~e1d DIS parity nonconservation. Prescott & S...

Analysis of Beam-Beam Kink Instability in a Linac-Ring Electron-Ion Collider

A linac-ring collision scheme was considered in recent proposals of electron-gold colliders (eRHIC) and polarized-electron light-ion colliders (EPIC). The advantages of using an energy-recovered linac for the electron beam is that it avoids the limitation of beam-beam tune shift inherent in a storage ring, pertains good beam quality and easy manipulation of polarization. However, the interactio...

Beam-beam observations in the Relativistic Heavy Ion Collider

Physical characteristics of electron beam from conventional and beam shaper IOERT applicator: A comparison study

Introduction: Intraoperative electron radiation therapy (IOERT) is one of the cancer treatment techniques that delivers high doses to tumor bed during surgery. IOERT can be performed by either conventional LINACs or dedicated IORT accelerators such as LIAC (Light Intraoperative Accelerator). Two types of applicators can be used with LIAC dedicated accelerator including conventi...

An optically pumped, highly polarized cesium beam for the study of spin-dependent electron scattering

We have set up an atomic beam of cesium for the study of spin-dependent electron-cesium scattering. The beam is produced by an effusive oven with continuous recirculation of the condensed metal. The beam is optically pumped by circularly polarized light from two laser diodes tuned to the 6 2 S1/2 (F -3) 6 21P3/2 (F' = 4) and 6 2 Sl/2 (F = 4) --, 6 2 P3/2 (F' = 5) transitions, respectively. Near...