1 / 28

Irradiation Tests Module 3B

Irradiation Tests Module 3B. L-wire 64. L. U. 485cm. 1. Position. Irradiate small area: 2x2 cm 2 , with 2 mCu 90 Sr, 2 cm distance (~200 nA). Many tests, see last slide for overview. NB: gas flow from Upper to Lower. Source profile. Gas flow. History Module 3. Construction:

nona
Download Presentation

Irradiation Tests Module 3B

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Irradiation Tests Module 3B L-wire 64 L U 485cm 1 Position Irradiate small area: 2x2 cm2, with 2 mCu 90Sr, 2 cm distance (~200 nA) Many tests, see last slide for overview NB: gas flow from Upper to Lower Source profile Gas flow

  2. History Module 3 • Construction: • 12 May 2004 • Flushed with Ar/CO2, 10 l/hr: • 9 June 2006 – 29 June 2004 • (Humidity of gas on input : Tdew=-76 0C, 17 June 2004) • 18 June 2004: Tdew=-22 0C • 22 June 2004: Tdew=-33 0C • 29 June 2004: Tdew=-35 0C • Total gas flow ~4800 liter • Medium Scale Test: flushed in C-frame, 76 l/hr (7 modules) • 7 April 2005 – End of May • ~7500 liter • Flushed with Ar/CO2, 10 l/hr (2.5 – 20): • 6 Jan 2006 – present • Date Time Tmitchell Tcorrected H20 content(ppm) • 23-1-2006 18h28 -38 -35.5 212.3 • 24-1-2006 9h26 -41 -37.89 163.4 • 24-1-2006 18h25 -41 -37.89 163.4 • 25-1-2006 -43.8 -41.00 115.6 • 26-1-2006 16h26 -48 -45.66 67.1 • ~5000 liter NB: Remarkably, the humidity of the module did not increase between 2004 and 2006 !

  3. VI: Module 3B90Sr scan before and after 1st irradiation Module irradiated at 486 cm from lower end

  4. VI: Module 3B90Sr scan before and after 1st irradiation After irradiation: Before irradiation: Ratio: Irr/Non-irr: Source position: 484cm

  5. VI: Module 3B90Sr scan before and after 2nd irradiation Module irradiated at 462 cm from lower end

  6. VI: Module 3B90Sr scan before and after 2nd irradiation After irradiation: Before irradiation: Ratio: Irr/Non-irr: Source position: 462cm

  7. VI: Module 3B90Sr scan before and after 3rd irradiation L-side Module irradiated at 23 cm from lower end

  8. VI: Module 3B90Sr scan before and after 3rd irradiation: L-side After irradiation: Before irradiation: Ratio: Irr/Non-irr: Source position: 20cm

  9. VI: Module 3B 5th irradiation: upper side, around straw 32 60 hours Source profile (linear): Source profile (logar.):

  10. VI: Module 3B90Sr scan before and after 5th irradiation 60 hours Module irradiated at 430 cm from lower end

  11. VI: Module 3B90Sr scan before and after 5th irradiation: 60 hours After irradiation: Before irradiation: Ratio: Irr/Non-irr: Source position: 430cm

  12. VI: Module 3B90Sr scan before and after 6th irradiation • By accident gas flow: off… • Irradiated • 4 hours with HV • 8 hours without HV • Used 2 sources • Source collimated circular at 442 cm • Source collimated with slit at 475 cm(used for 90Sr scans) Point collimated Slit collimated

  13. VI: Module 3B90Sr scan before and after 6th irradiation: No gas flow! After 6th irradiation: ! Before 6th irradiation: Ratio: Irr/Non-irr: • Point collimated: 442 cm • effect is circular, as expected • Slit collimated: 475 cm • gain increased!? • No gas flow • Only 4 hrs at HV=1600V Source positions: 442cm and 475 cm

  14. VI: Module 3B 7th irradiation: upper side, around straw 32 20 l/hr Source profile (linear): Source profile (logar.):

  15. VI: Module 3B90Sr scan before and after 7th irradiation 20 l/hr Gas flow: 20 l/hr Source at 390 cm Irradiated 15 hours

  16. VI: Module 3B90Sr scan before and after 7th irradiation: 20 l/hr After 7th irradiation: Before 7th irradiation: Ratio: Irr/Non-irr: • Gas flow: 20 l/hr Source positions: 390cm

  17. VI: Module 3B 8th irradiation: upper side, around straw 32 2.5 l/hr Source profile (linear): Source profile (logar.):

  18. VI: Module 3B90Sr scan before and after 8th irradiation 2.5 l/hr Gas flow: 2.5 l/hr Source at 375 cm Irradiated 15 hours

  19. VI: Module 3B90Sr scan before and after 8th irradiation: 2.5 l/hr After 8th irradiation: Before 8th irradiation: Ratio: Irr/Non-irr: • Gas flow: 2.5 l/hr Source positions: 375 cm

  20. VI: Module 3B90Sr scan before and after 9th irradiation 2 sources Gas flow: 10 l/hr 2 sources  Does the 1st source eats the pollutions?? Irradiated 15 hours • Used 2 sources • Source collimated circular at 340 cm • Source collimated with slit at 360 cm(used for 90Sr scans)

  21. VI: Module 3B90Sr scan before and after 9th irradiation: 2 sources After 9th irradiation: Before 9th irradiation: Ratio: Irr/Non-irr: • Two sources: Source positions: 340 and 460 cm

  22. VI: Module 3B90Sr scan before and after 10th irradiation dryer?? Gas flow: 20 l/hr Source at 310 cm Irradiated 15 hours Humidity on output: Tdew= -43 oC  <200 ppm Wire locator

  23. VI: Module 3B90Sr scan before and after 10th irradiation: dryer?? After 8th irradiation: Before 8th irradiation: Ratio: Irr/Non-irr: • Gas flow: 20 l/hr • Humidity: <200 ppm Source positions: 310 cm

  24. VI: Module 3B11th irradiation: upper side, around straw 32 dry: 20-30 ppm Source profile (linear): Source profile (logar.):

  25. VI: Module 3B90Sr scan before and after 11th irradiation dry: 20-30 ppm Gas flow: 20 l/hr Source at 415 cm Irradiated 15 hours Humidity on output: Tdew= -51 oC  20-30 ppm

  26. VI: Module 3B90Sr scan before and after 11th irradiation: dry: 20-30 ppm After 8th irradiation: Before 8th irradiation: Ratio: Irr/Non-irr: • Gas flow: 20 l/hr • Humidity: 20-30 ppm Source positions: 415 cm

  27. Humidity 29 Jan 23 Jan

  28. Conclusions Gas flow L-wire 64 L U 485cm 1 Position

More Related