Details
| Original language | English |
|---|---|
| Article number | 6501710 |
| Pages (from-to) | 1-10 |
| Number of pages | 10 |
| Journal | IEEE Transactions on Instrumentation and Measurement |
| Volume | 73 |
| Publication status | Published - 2024 |
| Externally published | Yes |
Abstract
A new digitizer, the HPM7177, which is a fundamental component of the signal chain for high precision measurement of particle accelerator magnet currents, is presented. It was designed to meet the unprecedented performance requirements for new 14 kA and 18 kA power converters (PCs) for the High Luminosity Large Hadron Collider (HL-LHC) project at CERN, particularly in terms of low-frequency noise and stability. To determine accurately the performance of the digitizer, which is on a similar level as state-of-the-art classical metrological equipment, we carried out a thorough characterization using the programmable Josephson voltage standard (PJVS) at PTB-Braunschweig. At its nominal full scale of 10 V , the digitizer has a white noise level of < 175 n V Hz-1/2 , 1/f noise floor ≈ 7e-8 V , and a 12-h peak-to-peak stability better than 2 μ V or 0.2 parts per million (ppm). The static non-linearity from 0 V to +10 V is < 1 ppm and remains stable to ≈ e-7 l evel in 12. The digitizer operates at a fixed rate of 10 k Samples s and can be synchronized externally. Besides qualifying HPM7177 for its application, the characterization reveals important aspects of its operation, as well as some performance limitations.
Keywords
- Analog-to-digital converter (ADC), digitizer, High Luminosity Large Hadron Collider (HL-LHC), high precision, Large Hadron Collider (LHC), low noise, metrology, programmable Josephson voltage standard (PJVS)
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Instrumentation
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Transactions on Instrumentation and Measurement, Vol. 73, 6501710, 2024, p. 1-10.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Design and Metrological Characterization of a Digitizer for the Highest Precision Magnet Powering in the High Luminosity Large Hadron Collider
AU - Beev, Nikolai
AU - Bastos, Miguel Cerqueira
AU - Martino, Michele
AU - Valuch, Daniel
AU - Palafox, Luis
AU - Behr, Ralf
N1 - Publisher Copyright: © 1963-2012 IEEE.
PY - 2024
Y1 - 2024
N2 - A new digitizer, the HPM7177, which is a fundamental component of the signal chain for high precision measurement of particle accelerator magnet currents, is presented. It was designed to meet the unprecedented performance requirements for new 14 kA and 18 kA power converters (PCs) for the High Luminosity Large Hadron Collider (HL-LHC) project at CERN, particularly in terms of low-frequency noise and stability. To determine accurately the performance of the digitizer, which is on a similar level as state-of-the-art classical metrological equipment, we carried out a thorough characterization using the programmable Josephson voltage standard (PJVS) at PTB-Braunschweig. At its nominal full scale of 10 V , the digitizer has a white noise level of < 175 n V Hz-1/2 , 1/f noise floor ≈ 7e-8 V , and a 12-h peak-to-peak stability better than 2 μ V or 0.2 parts per million (ppm). The static non-linearity from 0 V to +10 V is < 1 ppm and remains stable to ≈ e-7 l evel in 12. The digitizer operates at a fixed rate of 10 k Samples s and can be synchronized externally. Besides qualifying HPM7177 for its application, the characterization reveals important aspects of its operation, as well as some performance limitations.
AB - A new digitizer, the HPM7177, which is a fundamental component of the signal chain for high precision measurement of particle accelerator magnet currents, is presented. It was designed to meet the unprecedented performance requirements for new 14 kA and 18 kA power converters (PCs) for the High Luminosity Large Hadron Collider (HL-LHC) project at CERN, particularly in terms of low-frequency noise and stability. To determine accurately the performance of the digitizer, which is on a similar level as state-of-the-art classical metrological equipment, we carried out a thorough characterization using the programmable Josephson voltage standard (PJVS) at PTB-Braunschweig. At its nominal full scale of 10 V , the digitizer has a white noise level of < 175 n V Hz-1/2 , 1/f noise floor ≈ 7e-8 V , and a 12-h peak-to-peak stability better than 2 μ V or 0.2 parts per million (ppm). The static non-linearity from 0 V to +10 V is < 1 ppm and remains stable to ≈ e-7 l evel in 12. The digitizer operates at a fixed rate of 10 k Samples s and can be synchronized externally. Besides qualifying HPM7177 for its application, the characterization reveals important aspects of its operation, as well as some performance limitations.
KW - Analog-to-digital converter (ADC)
KW - digitizer
KW - High Luminosity Large Hadron Collider (HL-LHC)
KW - high precision
KW - Large Hadron Collider (LHC)
KW - low noise
KW - metrology
KW - programmable Josephson voltage standard (PJVS)
UR - http://www.scopus.com/inward/record.url?scp=85182378897&partnerID=8YFLogxK
U2 - 10.1109/TIM.2023.3343809
DO - 10.1109/TIM.2023.3343809
M3 - Article
AN - SCOPUS:85182378897
VL - 73
SP - 1
EP - 10
JO - IEEE Transactions on Instrumentation and Measurement
JF - IEEE Transactions on Instrumentation and Measurement
SN - 0018-9456
M1 - 6501710
ER -