Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1689922 | Vacuum | 2015 | 6 Pages |
Abstract
Two in-vacuum kicker magnets serve to inject and to extract the electron beams for the TPS injector. A large gas load generated from the outgassing of kicker ferrites (CMD5005) causes concern. To study the effect of vacuum firing in decreasing the outgassing from kicker ferrites, we set up a test bench to record spectra from a residual-gas analyzer (RGA) and measured the rates of outgassing during vacuum firing. The RGA spectrum revealed that water vapor is the dominant gas from the unbaked ferrites; with the throughput method the rate of outgassing, q2.7 (Ferrite), before baking was 5.5 Ã 10â9 mbar L sâ1 cmâ2. A duration 40 h of vacuum firing at 200 °C is required to remove the water vapor from the kicker ferrites and to yield a rate between 2.2 Ã 10â12 and 2.6 Ã 10â12 mbar L sâ1 cmâ2 after vacuum firing.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
C.K. Chan, C.C. Chang, C.L. Chen, C.S. Chen, C.S. Yang,