P. Bauer
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View article: Correction coil and magnet feeder lessons learned
Correction coil and magnet feeder lessons learned Open
China has contributed to the manufacturing of the Error Field Correction Coils (CC) and the Magnet Feeders for ITER (International Thermonuclear Experimental Reactor). The manufacturing projects have been carried by ASIPP (Institute of Pla…
View article: Coupling and Hysteresis Loss Measurements on the ITER CS Module #4
Coupling and Hysteresis Loss Measurements on the ITER CS Module #4 Open
The fourth CS Module (CSM#4) of the ITER Central Solenoid was tested in November/December 2022 at the premises of General Atomics, Poway, US. During the measurement campaign, the CSM#4 was submitted to dumps of the transport current from d…
View article: AC Losses Calculations for the ITER CS and PF Magnet Systems During Plasma Operation
AC Losses Calculations for the ITER CS and PF Magnet Systems During Plasma Operation Open
While the ITER magnet system assembly is progressing, models are being developed to predict the performances of the coils in support of the preparation of commissioning and operation. In particular, the AC losses generated in the coils dur…
View article: Multiphysics Model of Quench for the ITER Central Solenoid
Multiphysics Model of Quench for the ITER Central Solenoid Open
The ITER Central Solenoid (CS), the backbone of the ITER magnet system, is composed of 6 modules, each made of 40 pancakes, for a total conductor length of about 36 km. More than 4 km of pipes, about 30 bypass or control valves, the heat e…
View article: Voltages in the ITER magnets during operation
Voltages in the ITER magnets during operation Open
Powerful electromagnetic transients characterize the operation of the ITER superconducting magnet system. This is especially the case for so-called plasma disruptions, but also during plasma current initiation and termination and during th…
View article: Description of the AC Loss Model for the ITER Central Solenoid During a Plasma Scenario
Description of the AC Loss Model for the ITER Central Solenoid During a Plasma Scenario Open
AC loss is a major heat load in the pulsed, superconducting ITER coils, and thus a design driver for the cryo-system and superconductor. Given the importance of AC loss, extensive AC loss characterization of the components of the ITER coil…
View article: Synchrotron radiation issues in the VLHC
Synchrotron radiation issues in the VLHC Open
Fermilab and other DOE high energy physics laboratories are studying the possibility of a Very Large Hadron Collider (VLHC) for operation in the post-LHC era. The current VLHC design [1] foresees a 2-staged approach, where the second stage…
View article: Accelerator physics and technology limitations to ultimate energy and luminosity in very large hadron colliders
Accelerator physics and technology limitations to ultimate energy and luminosity in very large hadron colliders Open
The following presents a study of the accelerator physics and technology limitations to ultimate energy and luminosity in very large hadron colliders (VLHCs). The main accelerator physics limitations to ultimate energy and luminosity in fu…
View article: Synchrotron radiation issues in future hadron colliders
Synchrotron radiation issues in future hadron colliders Open
Hadron machines mostly use high field superconducting magnets operating at low temperatures. Therefore the issue of extracting a SR power heat load becomes more critical and costly. Conceptual solutions to the problem exist in the form of …
View article: Electropolishing on small samples at Fermilab
Electropolishing on small samples at Fermilab Open
The electropolishing process (EP) is considered an essential step in the processing of high gradient SRF cavities. Studies on EP of small samples has been started at Fermilab as part of the SRF materials R&D program. A simple bench top…
View article: AC Losses in the First ITER CS Module Tests: Experimental Results and Comparison to Analytical Models
AC Losses in the First ITER CS Module Tests: Experimental Results and Comparison to Analytical Models Open
The ITER Central Solenoid (CS) will be manufactured by assembling a stack of six modules, which are under fabrication by the US ITER organization and its subcontractors. The tests of the first CS Module have been performed at the premises …
View article: Development of HTS Current Leads for the ITER Project
Development of HTS Current Leads for the ITER Project Open
The HTS current leads for the ITER project will be the largest ever operated, with unprecedented currents, up to 68 kA and voltages, up to 14 kV. According to the ITER agreement they will be provided in-kind by China. After an extensive de…
View article: Manufacture and Test of the ITER TF Type HTS Current Lead Prototypes
Manufacture and Test of the ITER TF Type HTS Current Lead Prototypes Open
High temperature superconducting current leads (HTS-CL) are designed to supply the current to the large superconducting ITER magnets for the operation with reduced heat load to the cryogenic system. The Toroidal field (TF) current leads ar…