ESS-Bilbao Initiative Workshop. The CSNS rotating target concept and test programme.

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The CSNS rotating target concept and test programme.
Xuejun Jia (Institute of Physics Chinese Academy of Science)

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ESS-Bilbao Initiative Workshop. The CSNS rotating target concept and test programme.

  1. 1. CSNS Rotating target concept CSNS target team ESS-bilbao initiative Bilbao Spain March 16-18, 2009
  2. 2. Outline • CSNS project overview • CSNS project present status • CSNS rotating target concept Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  3. 3. CSNS layout Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  4. 4. Future of CSNS £¤ © £¢ ¨ ¡  £¢ µ £§ ¦¥ £¤ ¦¥ Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  5. 5. Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  6. 6. Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  7. 7. CPM plan and budget • 6.5 years after ground breaking, 2 billion CNY (300 million USD) Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  8. 8. 1 Linac Ion-source: + †… ‡quot; ‰ „ƒ ˆ Penning H- a RS Y` QP UT X IG G H ISIS WV bc de T H H ISIS ISIS uf x w gh U € dp rs yi q t 11 ! #quot; %$ ' )( 01 2 H v T ‚G 7 54 C 8 A9 FE 3 B D 7 @ @ 6 Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  9. 9. 1 Linac Drift Tube Linac  ji ™— •– e ” d ‘ ’“ ˜ ˜g f h– ˜ nm lk pq o ‘ 6 s u x˜ ” r t ’“ wv z{y Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  10. 10. 1 € ®­ ‚ • RD –— ¯’ ƒ Linac }| „… ™˜ ° ~ ‡† ²± š›’ ‰ˆ œ ³´ « Š‹ DTL RF power systems Ÿž  ¶µ ‘ Œ  h · Ž ¡¢  ‘ Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009 ’¸ ˜ ‘ ˜ “’ £ ¤s ¤s ” wv 09 ¹˜ u Ò Ç Æ »º ¥¦ wv ÔÓ z ȼ ¨§ Ö×Õ ÊÉ ½¾ ËÌ ¿ © ÀÁ «ª ÎÍ Â zs ÐÏ Äà ¬ ÑÅ
  11. 11. 2 RCS Magnet âá äå òñ ö÷ éü ÛÚ ßÞ à ã çæ éêè ìâ ïî ‚ô øù úû Ù Ý ë ð í Ü Ø ó õ 5 , 10 ýñ ÿå ¨å ýñ ÿå õæ çÞ è ¢¡ £ ¦§ æâ Ý © õí þ   ¤¥ é Ring dipole magnet Ring quadrupole magnet Ring magnet measurement Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  12. 12. 2 RCS Power Supply 65 » 23 A Ð ! Ä $% '( )0 @ 97 # 1 # quot; 8 Ö Ö 4 Ring RF cavities and power supply Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  13. 13. 2 RCS Ring injection and extraction magnet and power supply: Ring vacuum: HG DE BC I F VU QR WX P Y T S S cd ef iV hg b` a qp W st g r v u xF w ’y ”„ •‡ —‘ ‚“ ƒ †  S – fg ™d e ih kƒ ˜ j €y ˆ‡ ‘ ‚ ƒ † ‰ „… Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  14. 14. ’ lm “ on TMR ½¼ ” ¦ €• before HIP § ¾ p ‡€ „¿ –— rq Š ÀÁ ˜™ Target station ¨ s :  ©ª š› ÃÄ « tu œ ­¬ Å Œ wv Æ   xy after HIP Ÿž z{ ¡  Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009 | ~} £¢  ¥¤ € Ç ‡ W-Ta „œ ÉÈ  „…‚ƒ ³´ Š Ê ®­ ËÆ †‡ ¯ Ì ¦ ˆ‰ à § €° Š Œ‹ µ¶ ± Í ²œ  ¸· Ê Ž ËÆ  ‘} ¹º ÎÏ »
  15. 15. 4 Instrument Ò Ò Í À Ó ×Ö ÑÚ É Ó Ú ß % Ä Ó ½ Õ Ø% Ù Û Ü ½ Ù Þ Ô ¼ Ý ÑÐ Ä¿ Ð  4 2 ä à '( @á âã 87 1 quot; Ö Ö Ó Ã ä æ% Çè éê ë ì ½ Ä ã è $% ç 7 Ð quot; å 4 Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  16. 16. 4 ¤¤ ¤¤ î 3He         ÿ ö îí ¡ ¡ ¡ ¡ ÷ ïð 𠙁 – ¥¥ ¥¥ ñ ü ’ Instrument òó ££ ¢¢ ££ ¢¢ ¦§ ¦§ ¦§ ¦§ ‘ õô • ö © ¨© ¨ © ©¨ ¨ ÷ õ  ø Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009 ù š òó š €  îí !! !!  quot; quot; quot; quot; ú š ûð #$ #$ #$ #$ ü ýþ ” %% %% š ‘
  17. 17. Outline • CSNS project overview • CSNS project present status • CSNS rotating target concept Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  18. 18. Summary of Main Advantages of a Rotating Target • Longevity - expectation is one target for the life of the facility – Reduced waste; independence of W-price development and manufacturer; high availability of facility; reduced life cycle cost. • Radiation damage independent of horizontal bam profile • No attached hot cell needed for replacement (if at all necessary) – Substantial cost savings; better utilization of building • Reduced coolant activation; easier water loop • Wear parts (bearings, drive and rotating union) can be replaced hands on. • More neutron beam ports Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  19. 19. RD on rotating target concept (CSNS mock-up test stand) • Test the validity of this concept and to gain first experience with a rotating target. • Provide first demonstration of the viability of the above concept by using a full model of the target head components and shaft and a dummy target with the right diameter and weight; • Confirm that acceptance criteria can be reached; • Gain experience in running a rotating target; • Verify certain parameters obtained by calculations. • To produce a sound basis for a decision as to whether or not CSNS wants to adopt a rotating target as the preferred solution. Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  20. 20. Rotating target mock-up Dummy target 5 Long shaft 4 Shaft support Helium 3 enclosure Rotating joint Driven unit 2 Cooling system 3 Test stand 1 Measurement protons Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  21. 21. CSNS Rotating Target Mock-up Stand • Use dummy disk of correct diameter and weight (adjust thickness) • Short circuit coolant flow in the disk with orifice to simulate pressure drop (allows replacement with “real” prototype) • Keep full length of shaft accessible to allow varying position of lower radial bearing • Use gear box and cardan joint to connect to motor • Use variable speed motor to explore range of revolution frequencies (0.5 – 5Hz) Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  22. 22. Uses of Test Stand • Use Test Stand to practice exchange of target bearing and rotating union. • Practice greasing of bearing • Test stand can be used to develop position monitoring for target disk, spill water recovery, monitoring of bearing, etc. • At a later stage replace lower bearing support plate by target plug inner shielding block with integrated lower bearing. • If available, replace dummy target by assembly demonstration target (SS or Al-alloy) • The final target can be tested for tightness and smooth running on the test stand (acceptance criteria). Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  23. 23. Acceptance Criteria for Mock-up • Leakage from rotation union 1 l/month • Temperature at stationary ring of bearing 50 C • Vibration amplitude at shaft transition 1mm • Lateral force on lower bearing 10 kg • Vertical deflection at outer edge of target disc 1mm • Horizontal deflection at circumference of target 1mm Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  24. 24. The Conceptual Solution for the CSNS Rotating Target Disk () Complete with coolant enclosure with coolant enclosure removed Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  25. 25. The Conceptual Solution for the CSNS Rotating Target Disk Involute shaped segments with grooves on surface Target shaft Hub (transition Tie bolts Rotating target window piece) Upper target container plate welded to hub → requires similar materials Upper and lower plate of inner disk have different shapes → check effect on cost Lower target container plate not supported in centre → check for deformation Check Al-hub (temperature) in case of loss of coolant Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  26. 26. Target dummy Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  27. 27. Rotating shaft Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  28. 28. Rotating shaft continue Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  29. 29. Rotating shaft support Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  30. 30. Support bearing Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  31. 31. Shaft support (Segmented lower radial bearing ) Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  32. 32. lower radial bearing Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  33. 33. Rotating joint Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  34. 34. ! II I I ( ( '' ( ( '' D D cc D D cc q pq p q qp p SS SS II I I T T ) ) T T ) ) P P P P 1 1 00 rs rs 1 1 00 rs rs f f ee f f ee Q Q Q Q t t t t 2 2 2 2 ì Å Driven system 33 33 ½ ½ u u u u 4 Ö 45 45 45 45 quot; Ä 66 66 7 77 77 5 Ã H H GG H H GG SGMGH75ACA61 RR R R 9 89 8 9 98 8 RR R R Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009 Ð DYNABOX110BASIC10.25 9 ! `` ` ` S S S S 7 gg g g 22 T T T T Ã a a a a 1 bb bb @@ @@ à PLC 2 c c c c UU UU è SS SS h h h h $ 4 ½ T T T T 5 5 5 5 4 V V A A V V A A # U U U U 4 CC B B CC B B WW WW Ð 4 V V V V i i i i DE DE DE DE ÒÒ E E E E XX XX Ó FF FF S S S S Y Y Y Y F F F F HH G G HH G G T T T T d d ' ' d d ' ' É !Æ Ð bb bb
  35. 35. Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  36. 36. Mock-up running report • Leakage from rotation union 1 l/month ( not good) • Temperature at stationary ring of bearing 50 C (RT) v v vv • Vibration amplitude at shaft transition 1 mm (0.4mm ) • Lateral force on lower bearing 10 kg (1kg) • Vertical deflection at outer edge of target disc 1mm (0.15 mm) • Horizontal deflection at circumference of target 1mm (0.4 mm) Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  37. 37. CSNS Drive unit Block house Water feed and Target plug support unit (ca 60 cm Ø) Outer (concrete) shielding Reflector Proton beam Plug for Inner (steel) shielding neutron guides Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  38. 38. Target Station Overview Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  39. 39. Target Plug Reflector and shield cooling (in series for each side) Two half-shells around target shaft, Bolted together and attached to target plug top plate Tie rods Target Consider square shield cross section for central central target shield cylinder 3,5 m Stacked plates openings in Target plug vessel to vessel make Cooled shielding connections (vertically segmented) Upper reflector (vertically segmented) Approx. weight (3, 5 m high) 55x55 square block: 8.3 t (55cm diam. cylinder: 6.5 t) 55 cm Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  40. 40. Vertical Insertion of Target and Upper Moderator Upper moderator Design for segmented upper target plug plug (ca 2 m) to reduce weight for lift Outer liner Top lid Inner liner Target Lower and upper reflector plug reflector shielding Target plug plug subdivided ≈ 4m into sector- segments in upper Inlet plate for lower region reflector cooling (premod?) Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  41. 41. Schematic Plan View of the Target Block cold thermal Reflector Moderator plug Add on Removable Proton beam shielding for shield plug for neutron tunnel guide bundle guide bunker Storage for Target radioactive or plug cold spare plugs thermal Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  42. 42. Possible Arrangement of Buildings possible extension User and User and experiment experiment control control rooms rooms (2nd and 3rd floor) (2nd and 3rd floor) Target and instrument hall possible extension for neutron guide hall Fast neutron station ca 40 m Utility rooms on upper floor Shielded bunker on ground floor possible (intermediate active storage) extension Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  43. 43. Rotating target neutronics Dr. Liang Tianjiao • 3 moderators • Upper moderator: Decoupled poisoned Hydrogen (20k) and Water Moderator, • Lower moderator: Coupled Hydrogen Moderator (20k) • Be + SS304 reflector Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  44. 44. Geometry of three moderators configuration Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  45. 45. Geometry of three moderators configuration Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  46. 46. Geometry of three moderators configuration Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  47. 47. Geometry of three moderators configuration Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  48. 48. Geometry of three moderators configuration Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  49. 49. Spectra from three moderators Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  50. 50. Spectra from three moderators Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  51. 51. Pulse Peak Intensity Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  52. 52. CHM Surface Intensity Distribution (all energy) Target side Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  53. 53. DWM Surface Intensity Distribution (100meV) Target side Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009
  54. 54. DPHM broad side Surface Intensity Distribution (10meV) Target side Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009

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