poskusil skalirat problem na nerelativisticen

boris.py

@@ -63,7 +63,7 @@ def B_loop(p, a):
     if r < 1e-15:
         Bz = 2*np.pi*1e-7*a**2/(a**2+z**2)**1.5
         return np.array([0.,0.,Bz])
-    m = 4*a*r/( (r+a)**2+z**2)
+    m = np.sqrt(4*a*r/( (r+a)**2+z**2))
     K = ellipk(m)
     E = ellipe(m)
 

majhenprimer.py

@@ -0,0 +1,25 @@
+#!/usr/bin/python3
+import numpy as np
+import matplotlib.pyplot as plt
+from matplotlib import rc
+#rc('font',**{'family':'serif','serif':['Computer Modern']})
+#rc('text', usetex=True)
+from scipy.special import ellipe,ellipk
+from boris import *
+
+m = m_el
+q = e
+i = 5 # tok v ovoju
+
+a = 0.5 # ovoj
+
+v0 = np.array([0.0,-0.2,0.1])
+x0 = np.array([.1, 0.,0.])
+E = lambda x: np.array([0.,0.,0.])
+B = lambda x: B_bottle(x, a, a/2, i)
+dt = 1e-2
+tdur = 10
+#print(tdur/dt)
+
+X,V = boris(x0, v0, E, B, dt, tdur, q, m)
+plot3(X)

tokamak.py

@@ -10,21 +10,21 @@ from boris import *
 m = m_pr
 q = e
 i = 80 # tok v ovoju
-N = 15000 # stevilo ovojev
+N = 150000 # stevilo ovojev
 I = i*N
 
 a = 1.5 # ovoj
 b = 0.8 + 0.5*a 
 
 v0 = np.array([-0.1,-0.15,0.])*c
-v0 = np.array([0.8, -0.48, 0.3595])*c
+#v0 = np.array([0.8, -0.48, 0.3595])*c*0.2
-x0 = np.array([2.3, 0.,0.])
+x0 = np.array([2., 0.,0.])
-x0 = np.array([0.,0.,0.8])
+#x0 = np.array([0.,0.5,-0.8])
 E = lambda x: np.array([0.,0.,0.])
 B = lambda x: tokamak(x, a, b, I, 16)
-B = lambda x: B_bottle(x, 1., 5., I)
+#B = lambda x: B_bottle(x, 1., 5., I) + B_loop(x,4.)*100*8000
-dt = 2e-11
+dt = 2e-12
-tdur = 1e-6
+tdur = 3e-7
 #print(tdur/dt)
 
 X,V = boris(x0, v0, E, B, dt, tdur, q, m)