Dipoles and quadrupoles are common in many different fields, especially in the control of charged particle beams. The picture above shows the field from a quadrupole device developed for the control of particle beams at the HERA accelerator in Hamburg, Germany. While the field stength plotted here is actually for a magnetic quadrupole, the shape and dependence is the same as that from an electric quadrupole.

Week 8 - March 2-6:

• CHECK OUT THESE LINKS for simulations to show vector fields in 2D and 3D and another (emstatic) in 2D.
  
  
• OFFICE HOURS THIS WEEK: Monday office hours with Prof. Kinney will be in the tutorial bay, G2B77, from 3-4pm and 5-6pm. Tuesday office hours are in the same location and run from 4-6:00pm. If you cannot come to one of these sessions, send me an email, and I'll try to find another time.
  
  
• WRITTEN HOMEWORK: HW#7 is due this week on March 4th in class as usual. The problems can be found at the assignments link (always available on the sidebar).
  
  
• READING: We are studying the effects of applying electric fields in matter! Read Griffiths' 4.1-4.3.
  
  
• TUTORIALS: This week we have a regular tutorial, Friday (Mar 6) at 4pm at the G2B tutorial bay G2B77. We'll learn about how to calculate the polarization of matter in an electric field. All tutorials are posted on the assignments page.
  
  
• HW SOLUTIONS: Solutions to HW1 - HW5 are posted on our CULearn page.
  
  
• Course home pages from the previous week: 1, 2, 3, 4, 5, 6, 7.