The Recent Improvements of the SNS Extraction Kicker Power Supplies

Yugang Tan; Robert Saethre

doi:10.1109/IPMHVC51093.2022.10099421

The Recent Improvements of the SNS Extraction Kicker Power Supplies

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A total of 14 extraction kickers., with one as the hot spare., are in service to extract protons out of the storage ring at the SNS. The jitter issue and the short lifetime of the switches were resolved after the thyratrons were replaced with solid state switches in 2018. This paper discusses the recent improvements. Two thyristor switches suffered overheating damage in separate incidents. One was due to the oil pump failure and the other was the result of a disconnected oil hose. An ultrasonic flow meter and a fiber optic temperature monitoring system have been installed for each extraction kicker power supply. The flow meter continuously monitors the entire tank oil flow. The temperature monitor detects the thyristor switch real-time temperatures in three locations. Fault thresholds are selected so that the thyristor switches are protected from overheating damage. Alarms are configured to alert staff to take actions before faults occur. In addition., the cause of an intermittent misfire issue was identified, and the solution was implemented. Lastly., a future oscilloscope upgrade and an oil level sensor are discussed.

Original language	English
Title of host publication	2022 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2022
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	141-143
Number of pages	3
ISBN (Electronic)	9781665471657
DOIs	https://doi.org/10.1109/IPMHVC51093.2022.10099421
State	Published - 2022
Externally published	Yes
Event	2022 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2022 - Knoxville, United States Duration: Jun 19 2022 → Jun 23 2022

Publication series

Name	2022 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2022

Conference

Conference	2022 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2022
Country/Territory	United States
City	Knoxville
Period	06/19/22 → 06/23/22

Funding

This manuscript has been authored by UT-Battelle, LLC, under contract DE- AC05-00OR22725 with the US Department of Energy (DOE). The publisher acknowledges the US government license to provide public access under the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access- plan. This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The publisher acknowledges the US government license to provide public access under the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan.

Funders	Funder number
DOE Public Access Plan
U.S. Department of Energy

Keywords

Extraction Kicker
Flow Meter
Temperature Monitor

Access to Document

10.1109/IPMHVC51093.2022.10099421

Cite this

Tan, Y., & Saethre, R. (2022). The Recent Improvements of the SNS Extraction Kicker Power Supplies. In 2022 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2022 (pp. 141-143). (2022 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2022). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IPMHVC51093.2022.10099421

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abstract = "A total of 14 extraction kickers., with one as the hot spare., are in service to extract protons out of the storage ring at the SNS. The jitter issue and the short lifetime of the switches were resolved after the thyratrons were replaced with solid state switches in 2018. This paper discusses the recent improvements. Two thyristor switches suffered overheating damage in separate incidents. One was due to the oil pump failure and the other was the result of a disconnected oil hose. An ultrasonic flow meter and a fiber optic temperature monitoring system have been installed for each extraction kicker power supply. The flow meter continuously monitors the entire tank oil flow. The temperature monitor detects the thyristor switch real-time temperatures in three locations. Fault thresholds are selected so that the thyristor switches are protected from overheating damage. Alarms are configured to alert staff to take actions before faults occur. In addition., the cause of an intermittent misfire issue was identified, and the solution was implemented. Lastly., a future oscilloscope upgrade and an oil level sensor are discussed.",

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year = "2022",

doi = "10.1109/IPMHVC51093.2022.10099421",

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Tan, Y & Saethre, R 2022, The Recent Improvements of the SNS Extraction Kicker Power Supplies. in 2022 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2022. 2022 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2022, Institute of Electrical and Electronics Engineers Inc., pp. 141-143, 2022 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2022, Knoxville, United States, 06/19/22. https://doi.org/10.1109/IPMHVC51093.2022.10099421

The Recent Improvements of the SNS Extraction Kicker Power Supplies. / Tan, Yugang ; Saethre, Robert.
2022 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2022. Institute of Electrical and Electronics Engineers Inc., 2022. p. 141-143 (2022 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2022).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - A total of 14 extraction kickers., with one as the hot spare., are in service to extract protons out of the storage ring at the SNS. The jitter issue and the short lifetime of the switches were resolved after the thyratrons were replaced with solid state switches in 2018. This paper discusses the recent improvements. Two thyristor switches suffered overheating damage in separate incidents. One was due to the oil pump failure and the other was the result of a disconnected oil hose. An ultrasonic flow meter and a fiber optic temperature monitoring system have been installed for each extraction kicker power supply. The flow meter continuously monitors the entire tank oil flow. The temperature monitor detects the thyristor switch real-time temperatures in three locations. Fault thresholds are selected so that the thyristor switches are protected from overheating damage. Alarms are configured to alert staff to take actions before faults occur. In addition., the cause of an intermittent misfire issue was identified, and the solution was implemented. Lastly., a future oscilloscope upgrade and an oil level sensor are discussed.

AB - A total of 14 extraction kickers., with one as the hot spare., are in service to extract protons out of the storage ring at the SNS. The jitter issue and the short lifetime of the switches were resolved after the thyratrons were replaced with solid state switches in 2018. This paper discusses the recent improvements. Two thyristor switches suffered overheating damage in separate incidents. One was due to the oil pump failure and the other was the result of a disconnected oil hose. An ultrasonic flow meter and a fiber optic temperature monitoring system have been installed for each extraction kicker power supply. The flow meter continuously monitors the entire tank oil flow. The temperature monitor detects the thyristor switch real-time temperatures in three locations. Fault thresholds are selected so that the thyristor switches are protected from overheating damage. Alarms are configured to alert staff to take actions before faults occur. In addition., the cause of an intermittent misfire issue was identified, and the solution was implemented. Lastly., a future oscilloscope upgrade and an oil level sensor are discussed.

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The Recent Improvements of the SNS Extraction Kicker Power Supplies

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