:mod:`ocelot.cpbd.reswake`
==========================

.. py:module:: ocelot.cpbd.reswake

.. autoapi-nested-parse::

   writen by I. Zagorodnov, DESY and S.Tomin XFEL, 2015.



Module Contents
---------------


Functions
~~~~~~~~~

.. autoapisummary::

   ocelot.cpbd.reswake.wake2impedance
   ocelot.cpbd.reswake.impedance2wake
   ocelot.cpbd.reswake.imp_resistiveAC_SI
   ocelot.cpbd.reswake.ResistiveZaZb
   ocelot.cpbd.reswake.LossShape
   ocelot.cpbd.reswake.pipe_wake
   ocelot.cpbd.reswake.xfel_pipe_wake


.. function:: wake2impedance(s, w)

   Fourier transform with exp(iwt)
   s    - Meter
   w -    V/C
   f -    Hz
   y -    Om


.. function:: impedance2wake(f, y)

   Fourier transform with exp(-iwt)
   f -    Hz
   y -    Om
   s    - Meter
   w -    V/C


.. function:: imp_resistiveAC_SI(f, cond, a, tau, L)

   resistive impedance of round pipe (in SI Units)
   dimensions: f - Hertz
               cond - in 1/Second
               a - pipe radius in m
               tau - the relaxation time in s
               L-inductive for dielectric layer


.. function:: ResistiveZaZb(xb, bunch, a, conductivity, tau, Ind)

   :param xb:
   :param bunch:
   :param a: tube radius
   :param conductivity:
   :param tau:
   :param Ind:
   :return:


.. function:: LossShape(bunch, wake)

   loss, spread, peak
   dimensions:
               wake - m , Volt/pC
               out - V/pC;


.. function:: pipe_wake(z, current, tube_radius, tube_len, conductivity, tau, roughness, d_oxid)

   :param z:
   :param current:
   :param tube_radius:
   :param tube_len:
   :param conductivity:
   :param tau:
   :param roughness:
   :param d_oxid:
   :return:


.. function:: xfel_pipe_wake(s, current)

   :param s: smaller number (usually negative) is the head
   :param current:
   :return: s, current, wake


.. data:: tube_radius
   :annotation: = 0.005