About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Advanced Materials for Harsh Environments
|
| Presentation Title |
Comparative Study of Thin Polymeric Materials for Use in Large-Area, Low-Mass Pressure Windows for Heavy-Ion Detectors |
| Author(s) |
Lucas Rakieten, Marco Cortesi, Laurel Seidensticker, Iulia-Maria Harca |
| On-Site Speaker (Planned) |
Lucas Rakieten |
| Abstract Scope |
At the Facility for Rare Isotope Beams (FRIB) thin composite polymeric materials are used as pressure windows in various transmission detectors for heavy-ion beam tracking and particle identification. These materials must meet stringent requirements that includes a low mass thickness, high uniformity, large areas, and the ability to withstand pressures up to 1 atm.
Several novel materials were selected as candidates and investigated - Aramid, Kapton, and Nomex. Tensile testing was performed to determine mechanical properties for an accurate characterization using Finite Element Analysis (FEA). Each material was evaluated for stress, strain, and deformation behavior using FEA. For porous materials composite thin film laminates were fabricated with a combination of materials to guarantee vacuum tightness.
Results from FEA show that Nomex/Kevlar laminated to Kapton met design requirements. When tested in the vacuum chamber at 1 atm, the lamination was able to maintain vacuum integrity with minimal deformation. |