Superconducting synchrotron orbital radiation apparatus

• US 4,783,634 A
• Filed: 02/25/1987
• Issued: 11/08/1988
• Est. Priority Date: 02/27/1986
• Status: Expired due to Term

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Yamamoto, Yuuichi, Yamada, Tadatoshi, Ohara, Akinori, Iwamoto, Masatami
• Primary Examiner(s): Moore, David K.
• Assistant Examiner(s): O SHEA, SANDRA L
• Application Number:
  US07/018,394
• Time in Patent Office: 622 Days
• Field of Search: 328/234, 328/235, 313/62, 335/216, 335/300, 62/514 R, 174/15 C A, 336/62, 336/DIG. 1
• US Class Current: 315/503
• CPC Class Codes: H05H 13/04 Synchrotrons

Abstract

A superconducting synchrotron orbital radiation (SOR) apparatus having a plurality of deflecting electromagnets each comprising first and second superconducting coils which are immersed in liquid helium contained in helium tanks. The helium tanks are surrounded by nitrogen shields which are cooled by liquid nitrogen in nitrogen contained tanks. One of the helium tanks is equipped with a liquid helium supply port and a helium gas exhaust port. All of the other helium tanks are connected with this helium tank such that liquid helium which is supplied to this one helium tank automatically flows to the other helium tanks and such that helium gas from the other helium tanks automatically flows to this helium tank and is exhausted. One of the nitrogen tanks is equipped with a liquid nitrogen supply port and a nitrogen gas exhaust port, and all of the other nitrogen tanks are connected with this nitrogen tank so that liquid nitrogen which is supplied to this nitrogen tank automatically flows to the other nitrogen tanks, and nitrogen gas from the other nitrogen tanks automatically flows to this nitrogen tank and is exhausted.

Claims

1. A superconducting synchrotron orbital radiation (SOR) apparatus comprising:

a loop-shpaed vacuum chamber through which charged particles pass;

convergence means for making said charged particles converge as they pass through said vacuum chamber;

acceleration means for accelerating said charged particles within said vacuum chamber;

a plurality of deflecting electromagnets, each including a first and a second superconducting coil disposed so as to confront one another from opposite sides of said vacuum chamber and a first and second helium tank containing liquid helium in which said first and second superconduting coils, respectively, are immersed, said first helium tank of one of said deflecting electromagnets having a liquid helium supply port through which liquid helium can be charged and a helium gas exhaust port through which helium gas can be removed;

liquid helium connecting means including pipes connected between said helium tanks for connecting all of said helium tanks so that liquid helium can flow from said first helium tank which is equipped with said supply port and said exhaust port to all other helium tanks; and

helium gas connecting means including pipes connected between said helium tanks for connecting all of said helium tanks so that helium gas can flow from the other helium tanks to said first helium tank which is equipped with said supply port and said exhaust port.

2. A superconducting synchrotron orbital radiation (SOR) apparatus comprising:

a loop-shaped vacuum chamber thorugh which charged particles pass;

convergence means for making said charged particles converge as they pass through said vacuum chamber;

acceleration means for accelerating said charged particles within said vacuum chamber;

a plurality of deflecting electromagnets, each including a first and a second superconducting coil disposed so as to confront one another from opposite sides of said vacuum chamber and a first and second helium tank containing liquid helium in which said first and second superconducting coils, respectively, are immersed, said first helium tank of one of said deflecting electromagnets having a liquid helium supply port through which liquid helium can be charged and a helium gas exhaust port through which helium gas can be removed;

liquid helium connecting means for connecting all of said helium tanks so that liquid helium can flow from said first helium tank which is equipped with said supply port and said exhaust port to all other helium tanks;

helium gas connecting means for connecting all of said helium tanks so that helium gas can flow from the other helium tanks to said first helium tank which is equipped with said supply port and said exhaust port;

said liquid helium connecting means comprising liquid helium connecting pipes, each of which is connected between two of said helium tanks and opens onto the inside of the two helium tanks to which it is connected beneath the level of the liquid helium contained in said two helium tanks; and

said helium gas connecting means comprising helium gas connecting pipes, each of which is connected between two of said helium tanks and opens onto the inside of the two helium tanks to which is is connected above the level of the liquid helium contained in said two helium tanks.

3. A superconducting SOR apparatus as claimed in claim 2 wherein each said first helium tank is connected to each said second helium tank of the same deflecting electromagnet by one of said liquid helium connecting pipes and by one of said helium gas connecting pipes, and each of the other first helium tanks is connected by one of said liquid helium connecting pipes and by one of said helium gas connecting pipes to said first helium tank which is equipped with said supply port and exhaust port.

4. A superconducting synthrotron orbital radiation (SOR) apparatus comprising:

a loop-shaped vacuum chamber through which charged particles pass;

convergence means for making said charged particles converge as they pass through said vacuum chamber;

acceleration means for accelerating said charged particles within said vacuum chamber;

a plurality of deflecting electromagnets, each including a first and a second superconducting coil disposed so as to confront one another from opposite sides of said vacuum chamber and a first and second helium tank containing liquid helium in which said first and second superconducting coils, respectively, are immersed, said first helium tank of one of said deflecting electromagnets having a liquid helium supply port through which liquid helium can be charged and a helium gas exhaust port through which helium can be removed;

liquid helium connecting means connected between said helium tanks for connecting all of said helium tanks so that liquid helium can flow from said first helium tank which is equipped with said supply port and said exhaust port to all other helium tanks;

helium gas connecting means connected between said helium tanks for connecting all of said helium tanks so that helium gas can flow from the other helium tanks to said first helium tank which is equipped with said supply port and said exhaust port;

each of said deflecting electromagnets further comprising a first and a second nitrogen shield which respectively surround said first and said second helium tank;

a nitrogen tank containing liquid nitrogen, and cooling means for cooling said nitrogen shields with the liquid nitrogen contained within said nitrogen tank, one of said nitrogen tanks having a liquid nitrogen supply port through which liquid nitrogen can be charged and a nitrogen exhaust port through which nitrogen can be be removed; and

said SOR apparatus further comprising liquid nitrogen connecting means for connecting all of said nitrogen tanks so that liquid nitrogen can flow from said nitrogen tank which is equipped with said supply port to said other nitrogen tanks; and

nitrogen gas connecting means for connecting all of said nitrogen tanks so that nitrogen gas can flow from said other nitrogen tanks to said nitrogen tank which is equipped with said exhaust port.

5. An SOR apparatus as claimed in claim 4 wherein:

said liquid nitrogen connecting means comprises at least one liquid nitrogen connecting pipe, each of which is connected between two of said nitrogen tanks and opens onto the inside of the two nitrogen tanks to which it is connected beneath the level of the liquid nitrogen contained in said two nitrogen tanks; and

said nitrogen gas connecting means comprises at least one nitrogen gas connecting pipe, each of which is connected between two of said nitrogen tanks and opens onto the inside of the two nitrogen tanks to which it is connected above the level of the liquid nitrogen contained in said two nitrogen tanks.

6. A superconducting SOR apparatus as claimed in claim 5 wherein each of said other nitrogen tanks is connected to said nitrogen tank which is equipped with said supply pot and exhaust port by one of said liquid nitrogen connecting pipes and by one of said nitrogen gas connecting pipes.

7. A superconducting SOR apparatus as claimed in claim 4 wherein said cooling means of each deflecting electromagnet comprises a cooling pipe which communicates with the inside of the nitrogen tank of the same deflecting electromagnet so that liquid nitrogen can flow therethrough, said cooling pipe being in thermal contact with the outside surfaces of said first and second nitrogen shields.

8. A superconducting SOR apparatus as claimed in claim 4 wherein:

each said nitrogen tank of a deflecting electromagnet is in thermal contact with one of said nitrogen shields of said deflecting electromagnet; and

said cooling means includes a thermal connector of a thermally conducting material secured to outer surfaces of said first and second nitrogen shields to provide heat conduction therebetween.

9. A superconducting SOR apparatus as claimed in claim 8 wherein:

said first nitrogen shield and said second nitrogen shield are disposed above and below, respectively, said vacuum chamber; and

said nitrogen tank is disposed below said second nitrogen shield.

10. A superconducting synchrotron orbital radiation (SOR) apparatus comprising:

a loop-shaped vacuum chamber through which charged particles pass;

convergence means for making said charged particles converge as they pass through said vacuum chamber;

acceleration means for accelerating said charged particles within said vacuum chamber;

a plurality of deflecting electromagnets, each including a first and a second superconducting coil disposed so as to confront one another from opposite sides of said vacuum chamber and a first and second helium tank containing liquid helium in which said first and second superconducting coils, respectively, are immersed, said first helium tank of one of said deflecting electromagnets having a liquid helium supply port through which liquid helium can be charged and a helium gas exhaust port through which helium gas can be removed;

liquid helium connecting means connected between said helium tanks for connecting all of said helium tanks so that liquid helium can flow from said first helium tank which is equipped with said supply port and said exhaust port to all other helium tanks;

helium gas connecting means connected between said helium tanks for connecting all of said helium tanks so that helium gas can flow from the other helium tanks to said first helium tank which is equipped with said supply port and said exhaust port;

said superconducting coils of said deflecting electromagnets having a same number of turns; and

said apparatus further comprising a single power supply connected to said superconducting coils in such a manner that magnetic fields produced by said superconducting coils all have the same direction.