1 / 4

Stress in tungsten target

Goran Skoro . Stress in tungsten target. Tungsten cylinder (operating at 2000 K). Only difference (simulations vs. ISS baseline) is the beam energy value (6 instead 10 GeV) . TUNGSTEN.

ciel
Télécharger la présentation

Stress in tungsten target

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. Goran Skoro Stress in tungsten target

  2. Tungsten cylinder (operating at 2000 K) • Only difference (simulations vs. ISS baseline) is the beam energy value (6 instead 10 GeV) TUNGSTEN • The target is bombarded at 50 Hz by a proton beam (4 MW power) consisting of 4x2ns long bunches in a pulse with length from 1 to 80 s. 17cm • The target material exposed to the beam is 17 cm long and 2(6) cm in diameter. 2cm micro-pulse macro-pulse Beam energy = 6 GeV ISS baseline (April 2006): 4 MW, 10 GeV, 50 Hz, 4 bunches per pulse, 2 ns rms.

  3. Power = 4 MW, repetition rate = 50 Hz, Beam energy = 6 GeV (parabolic distribution) Stephen Brooks’s MARS calculations Energy deposition in tungsten target Radius Temperature rise per pulse [K] Length [cm] Input for thermal stress calculations (LS-DYNA) Here, beam radius = 1cm, rod radius = 1cm 2nd case analysed: beam radius = 1cm, rod radius = 3cm NB. Stephen has produced results for 0.1cm and 0.3cm beam radius values, too. Temperature rise in tungsten for 0.3cm beam radius reaches 1100 K per pulse at the centreline of the target (assuming 4 MW, 50 Hz).

  4. Results Beam radius = 1cm, Rod radius = 1cm Beam radius = 1cm, Rod radius = 3cm Macro pulse length [s] Peak Von Mises Stress [MPa] supported LS-DYNA Comment. Bigger radius really reduces peak stress in the target but we have ‘significant’ reduction (~2x) only for short macro-pulse length (where radial stress contribution dominates).

More Related