Intrinsic rotation and radial electric field in TCV plasmas

We present intrinsic rotation results of TCV tokamak, based on upgraded CXRS diagnostic. Toroidal rotation $u_{\phi}$ has been measured by 2 horizontally viewing systems, each one recently equipped with 40 optic fibres for light collection and back illuminated CCD detector. Measurements now cover the mid-plane plasma diameter, up to the LCFS, with radial resolution of 6 mm and sample rate of 50 ms. A third high resolution vertical view simultaneously provides poloidal rotation profile $u_{\theta}$ on the LFS mid-plane. This setup has been used to characterize rotation and radial electric field $E_{r}$ (from the radial force balance) in L-mode plasmas with negligible external torque. $E_{r} \simeq -4$~kV/m is measured in gradients region, reversing to positive values in occurrence of $u_{\phi}$ inversions. For $\rho_{\psi} \simeq 1$, a sharp peak in $u_{\theta}$ produces a $E_{r}<0$ well with values down to $-5$~kV/m, reminiscent of H-mode pedestal physics. Assessing the $E_{r}$ profile dependence on plasma parameters and magnetic configuration, we will address $E_{r}$ impact on energy and momentum transport.