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

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Technology

Published on May 8, 2009

Author: ESS_BILBAO

Source: slideshare.net

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

CSNS Rotating target concept CSNS target team ESS-bilbao initiative Bilbao Spain March 16-18, 2009

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

CSNS layout Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009

Future of CSNS     £¤ © £¢ ¨ ¡  £¢ µ £§ ¦¥ £¤ ¦¥ Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009

Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009

Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009

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

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

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    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

    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

    ’ 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 »

    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

    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 ‘

    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

    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

    R&D 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

    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

    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

    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

    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

    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

    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

    Target dummy Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009

    Rotating shaft Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009

    Rotating shaft continue Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009

    Rotating shaft support Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009

    Support bearing Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009

    Shaft support (Segmented lower radial bearing ) Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009

    lower radial bearing Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009

    Rotating joint Jia et.al, CSNS Rotating target, ESS-bilbao initiative , March 16-18, 2009

    ! 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

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