1 / 5

Update on Out-Gassing Tests for Protvino's Scintillator Prototype and Future Measures

This report provides an update on the out-gassing tests conducted on A. Gonidec's scintillator prototype, which includes 20 scintillator plates and 19 lead plates. The prototype's out-gassing rate was measured at 6.7 × 10^-9 mbar·l/(sec·cm²) after five days of pumping, confirming previous data from CKM. It suggests that a separate vacuum volume for the photon veto may not be needed. Future work includes gas load composition measurements and ongoing specifications for vacuum pumps, with an emphasis on optimizing wrapping materials for reduced pump down time.

myra-greer
Télécharger la présentation

Update on Out-Gassing Tests for Protvino's Scintillator Prototype and Future Measures

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. Update on out-gassing tests A Gonidec

  2. Protvino’s prototype 28 cm 39 cm 12 cm ■ 20 scintillator plates wrapped in paper - scintillator surface about 3 m2 - paper surface about 6 m2 ■ 19 lead plates – surface about 3 m2 ■ Fibers During the test the prototype was mounted on Al support plate (about 0.8 m2) A Gonidec

  3. Results - I A Gonidec

  4. Results - II The outgassing rate measured by CKM (5 days of pumping)is 6.7·10-9 mbar ·l /(sec · cm2) A Gonidec

  5. Conclusions • The out-gassing rate measured on the Protvino prototype confirms the figure from CKM which we use to specify the vacuum system. • With this out-gassing rate it would not be necessary to enclose the photon veto in a separate vacuum volume. • Measurements of the gas load composition still to be performed using mass spectrometry. • Progressing on the vacuum pumps specification. Firms have been contacted, proposals expected soon. • The pump down time will have to be reduce by a proper choice of wrapping material. Further tests to be done. • We are presently testing a sample of a “spaghetti” calorimeter. A Gonidec

More Related