Abstract
The Super-Kamiokande (SK) detector is a ring imaging Cherenkov detector for neutrino physics and proton-decay search and consists of 50000 tons of pure water equipped with about 13000 photo-multipliers (PMTs). The old front-end electronics and online system running for more than one decade were all upgraded in September, 2008 and the data acquisition was started successfully. The new front-end electronics is based on a charge to time converter (QTC) and a multi-hit TDC. TCP/IP based readout channel is implemented to handle large amounts of data. In the new data acquisition (DAQ) scheme, the hardware event-trigger for the data reduction is replaced by processing all the hits in the online farm, so that we are able to lower the threshold of the detection energy for solar neutrino and analyze consecutive events whose time interval is too long to detect in the previous system. To make the new online system to be capable of processing larger dataflow of up to 470MB/s, we utilize Gigabit and 10Gigabit Ethernet techniques and distribute the load over Linux PCs to handle a large amount of data. In this paper, we will describe the design and performance of the new system in the commissioning.
| Original language | English |
|---|---|
| Title of host publication | 2009 16th IEEE-NPSS Real Time Conference - Conference Record |
| Pages | 201-205 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2009 |
| Externally published | Yes |
| Event | 2009 16th IEEE-NPSS Real Time Conference - Beijing, China Duration: May 10 2009 → May 15 2009 |
Other
| Other | 2009 16th IEEE-NPSS Real Time Conference |
|---|---|
| Country | China |
| City | Beijing |
| Period | 5/10/09 → 5/15/09 |
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Keywords
- Data acquisition
- Event building
- Front-end electronics
- Neutrinos
ASJC Scopus subject areas
- Computational Theory and Mathematics
- Computer Networks and Communications
- Software
- Electrical and Electronic Engineering
Cite this
Commissioning of the new electronics and online system for the Super-Kamiokande experiment. / Yamada, S.; Awai, K.; Hayato, Y.; Kaneyuki, K.; Kouzuma, Y.; Nakayama, S.; Nishino, H.; Okumura, K.; Obayashi, Y.; Shimizu, Y.; Shiozawa, M.; Takeda, A.; Heng, Y.; Yang, B.; Chen, S.; Tanaka, T.; Yokozawa, T.; Koshio, Yusuke; Moriyama, S.; Arai, Y.; Ishikawa, K.; Minegishi, A.; Uchida, T.
2009 16th IEEE-NPSS Real Time Conference - Conference Record. 2009. p. 201-205 5321856.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Commissioning of the new electronics and online system for the Super-Kamiokande experiment
AU - Yamada, S.
AU - Awai, K.
AU - Hayato, Y.
AU - Kaneyuki, K.
AU - Kouzuma, Y.
AU - Nakayama, S.
AU - Nishino, H.
AU - Okumura, K.
AU - Obayashi, Y.
AU - Shimizu, Y.
AU - Shiozawa, M.
AU - Takeda, A.
AU - Heng, Y.
AU - Yang, B.
AU - Chen, S.
AU - Tanaka, T.
AU - Yokozawa, T.
AU - Koshio, Yusuke
AU - Moriyama, S.
AU - Arai, Y.
AU - Ishikawa, K.
AU - Minegishi, A.
AU - Uchida, T.
PY - 2009
Y1 - 2009
N2 - The Super-Kamiokande (SK) detector is a ring imaging Cherenkov detector for neutrino physics and proton-decay search and consists of 50000 tons of pure water equipped with about 13000 photo-multipliers (PMTs). The old front-end electronics and online system running for more than one decade were all upgraded in September, 2008 and the data acquisition was started successfully. The new front-end electronics is based on a charge to time converter (QTC) and a multi-hit TDC. TCP/IP based readout channel is implemented to handle large amounts of data. In the new data acquisition (DAQ) scheme, the hardware event-trigger for the data reduction is replaced by processing all the hits in the online farm, so that we are able to lower the threshold of the detection energy for solar neutrino and analyze consecutive events whose time interval is too long to detect in the previous system. To make the new online system to be capable of processing larger dataflow of up to 470MB/s, we utilize Gigabit and 10Gigabit Ethernet techniques and distribute the load over Linux PCs to handle a large amount of data. In this paper, we will describe the design and performance of the new system in the commissioning.
AB - The Super-Kamiokande (SK) detector is a ring imaging Cherenkov detector for neutrino physics and proton-decay search and consists of 50000 tons of pure water equipped with about 13000 photo-multipliers (PMTs). The old front-end electronics and online system running for more than one decade were all upgraded in September, 2008 and the data acquisition was started successfully. The new front-end electronics is based on a charge to time converter (QTC) and a multi-hit TDC. TCP/IP based readout channel is implemented to handle large amounts of data. In the new data acquisition (DAQ) scheme, the hardware event-trigger for the data reduction is replaced by processing all the hits in the online farm, so that we are able to lower the threshold of the detection energy for solar neutrino and analyze consecutive events whose time interval is too long to detect in the previous system. To make the new online system to be capable of processing larger dataflow of up to 470MB/s, we utilize Gigabit and 10Gigabit Ethernet techniques and distribute the load over Linux PCs to handle a large amount of data. In this paper, we will describe the design and performance of the new system in the commissioning.
KW - Data acquisition
KW - Event building
KW - Front-end electronics
KW - Neutrinos
UR - http://www.scopus.com/inward/record.url?scp=72749100932&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=72749100932&partnerID=8YFLogxK
U2 - 10.1109/RTC.2009.5321856
DO - 10.1109/RTC.2009.5321856
M3 - Conference contribution
AN - SCOPUS:72749100932
SN - 9781424444557
SP - 201
EP - 205
BT - 2009 16th IEEE-NPSS Real Time Conference - Conference Record
ER -