1 / 2

Heater model

Heater model. Objective: Better model of MB magnets and heaters in ROXIE. Based on previous simulations the current ‘sunglasses’ approach is not safe in case of a symmetric quench at nominal current. More accurate estimations of maximum allowable thresholds are needed. Steps:

bianca-cole
Download Presentation

Heater model

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. Heater model • Objective: • Better model of MB magnets and heaters in ROXIE. Based on previous simulations the current ‘sunglasses’ approach is not safe in case of a symmetric quench at nominal current. More accurate estimations of maximum allowable thresholds are needed. • Steps: • QP3 validation with SM18/Block 4 data • Validation of quench propagations speed in reduced ROXIE model • Validation of full ROXIE model with SM18/Block 4 data • Adding and validating a more accurate heater model in ROXIE Daniel Egede Rasmussen TE-MPE-PE

  2. Low current thresholds • Objective: • The tune feedback requires rapid changes to the current in the RQTD/F circuits. The derivative calculation in the QPS is very sensitive to these changes and the I<100 A threshold had to be raised to avoid false triggering. For post LS1 operation an increased threshold is needed beyond 100. • Steps: • QP3 simulations to establish maximum threshold for busbar protection <150 A • ROXIE simulation of each 600 A circuit type at the extremity of the threshold space. Daniel Egede Rasmussen TE-MPE-PE

More Related