1 / 4

T-506 REPORT FOR 6-27-13

T-506 REPORT FOR 6-27-13. Goal: study radiation effects on Si diode sensors at fluences of 5, 20, and 80 MRad (electromagnetically induced) ILC applications (far-forward calorimetry) Four types of sensors: n-type/p-type and float-zone/magnetic-Czochralski

washi
Download Presentation

T-506 REPORT FOR 6-27-13

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. T-506 REPORT FOR 6-27-13 • Goal: study radiation effects on Si diode sensors at fluences of 5, 20, and 80 MRad (electromagnetically induced) • ILC applications (far-forward calorimetry) • Four types of sensors: n-type/p-type and float-zone/magnetic-Czochralski • Wisdom had been that sensors don’t withstand one MRad

  2. T-506 So Far We 6/19 Begin installation (open access) Th 6/20 Complete installation; search and secure 3-5pm Fr 6/21 Alignment with beam. Activation study with dummy sample. Accumulate 2 MRad of first 5 MRad run. Sa 6/22 Complete three of four 5 MRad runs. Accumulate 15 MRad of first 20 MRad run. Su 6/23 Complete first 20 MRad run and last 5 MRad run. Mo 6/24 Study first 5 MRad sample at UCSC. Tu 6/25 Complete 2nd 20 MRad run. We 6/26 Down most of shift (see next); begin 3rd 20 MRad run Th 6/27 Complete 3rd 20 MRad run; confirm beam quality (thanks Janice & Peter); 4 MRad calibration run (capillary and radiochroic dosimetry)

  3. June 26 Tribulations • Changing to 3rd 20 MRad sample, smell something burning • Peltier controller hot; relay burned out (bad connection) • Try running entire apparatus cold; motion stages give out at -2o C or so (freezing condensation? Was very humid) • Find new peltier controller; re-install with beefy relay (thanks to Keith Jobe) • 24 hour period with no problems afterwards. •  No clear evidence yet of trouble with radiation, but move most things outside target box (will complete today).

  4. But: first results available Tuesday • 5 MRad exposure of p-type float-zone sensor Clearly not dead after 5 MRad!

More Related