The Advanced Photon Source linac modulators PSpice simulation and upgrade.
The APS linac modulators provide DC pulses to Thales 35/45-MW klystrons. The modulators are pulse forming network (PFN)-type pulsers with EMI 40-kV switch-mode charging supplies. The PFN consists of two 8-cell lines connected in parallel. EEV CX1836A thyratrons are used as discharge switches. The PSpice simulation of the modulators using OrCAD release 9.1 made it possible to find appropriate parameters of RC circuits that reduce high-frequency ringing of the pulse transformer primary voltage. In order to improve pulse top flatness (originally {+-}3%), new coils were built and installed. The coils allow discrete tuning of pulse waveforms by changing the amount of used turns. The advantage of two parallel-line PFN configurations was also used. An equivalent method using a low-voltage generator was used for PFN fine tuning.
- Research Organization:
- Argonne National Lab., IL (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 795847
- Report Number(s):
- ANL/ASD/CP-108093
- Country of Publication:
- United States
- Language:
- English
Similar Records
A hybrid anode reactor for the SLAC modulator
Final Conversion of the Spallation Neutron Source Extraction Kicker Pulse Forming Network to a High Voltage Solid-State Switch
Temperature Dependent Pspice Model
Conference
·
Wed Jun 01 04:00:00 UTC 1994
·
OSTI ID:10194031
Final Conversion of the Spallation Neutron Source Extraction Kicker Pulse Forming Network to a High Voltage Solid-State Switch
Conference
·
Sun Sep 01 04:00:00 UTC 2019
·
OSTI ID:1813279
Temperature Dependent Pspice Model
Conference
·
Sun Jan 01 04:00:00 UTC 2012
·
OSTI ID:1055013