Compact undulator system and methods

Abstract

An undulator with a compact construction is provided that reduces weight, complexity and cost. The compact undulator system and methods provides mechanical integrity without compromising magnetic field quality.

1 . An undulator system, comprising:
 a frame comprising a moveable magnetic array opposing a stationary magnetic array, each magnetic array comprising a plurality of holders horizontally arranged with each holder securing a magnetized permanent magnet: and   a driving mechanism connected to the moveable magnetic array, the driving mechanism comprising a rod component moveable within a tube component to move the moveable magnetic array along a horizontal beam axis with respect to the stationary magnetic array.   
     
     
         2 . The undulator system according to  claim 1  wherein the frame is a box-shape frame. 
     
     
         3 . The undulator system according to  claim 1  wherein the magnetized permanent magnet is soldered to each holder. 
     
     
         4 . The undulator system according to  claim 1  wherein each magnetic array includes a pair of base plates, the pair of base plates securing the plurality of holders. 
     
     
         5 . The magnet array of the undulator system according to  claim 1  wherein each holder comprises a copper material. 
     
     
         6 . The magnet array of the undulator system according to  claim 1  wherein the magnetized permanent magnet is a neodymium magnet. 
     
     
         7 . The undulator system according to  claim 1  further comprising a cooling element attached to the frame for controlling temperature of the magnet array. 
     
     
         8 . The undulator system according to  claim 7  wherein the cooling element comprises a coolant of either water or cold nitrogen. 
     
     
         9 . The undulator system according to  claim 1  wherein the driving mechanism moves the moveable magnetic array by a half period (12.2 mm) along a horizontal beam axis with respect to the stationary magnetic array. 
     
     
         10 . The undulator system according to  claim 1  wherein each magnetic array is covered with nickel plated copper foil. 
     
     
         11 . The undulator system according to  claim 1  further comprising a plurality of miniature linear bearings attached to the moveable magnetic array. 
     
     
         12 . An undulator system, comprising:
 a frame consisting of two arrays, a moveable magnetic array opposing a stationary magnetic array forming a gap between the arrays, each magnetic array comprising a plurality of holders horizontally arranged with a magnetized permanent magnet secured to each holder;   a plurality of miniature linear bearings positioned within the frame, each miniature linear bearing fastened to the moveable magnetic array; and   a driving mechanism connected to the moveable magnetic array, the driving mechanism comprising a rod component moveable within a tube component activating the plurality of miniature linear bearings to move the moveable magnetic array along a horizontal beam axis with respect to the stationary magnetic array.   
     
     
         13 . The undulator system according to  claim 12  wherein the gap is a constant vertical gap. 
     
     
         14 . The undulator system according to  claim 13  wherein the constant vertical gap is 5 mm. 
     
     
         15 . The undulator system according to  claim 12  wherein the frame is a box-shape frame. 
     
     
         16 . The undulator system according to  claim 12  further comprising a cooling element attached to the frame for controlling temperature of the magnet array. 
     
     
         17 . The undulator system according to  claim 16 , the cooling element comprising a coolant of either water or cold nitrogen. 
     
     
         18 . The undulator system according to  claim 12  wherein each holder comprises a copper material. 
     
     
         19 . The magnet array of the undulator system according to  claim 12  wherein the magnetized permanent magnet is a neodymium magnet. 
     
     
         20 . The undulator system according to  claim 12  wherein each magnetic array is covered with nickel plated copper foil.