Abstract
In order to separate and identify fragmentation products with the Super-Fragment Separator (SuperFRS) at FAIR a high resolving power detector system is required for position and Time-Of-Flight (TOF) measurements. The TOF detector is used to measure the velocity of the particles and hence, in conjunction with their momentum or energy, to determine their mass and hence their identity. Aiming to develop a system with a precision down to about 50 ps in time and resistant to a high radiation rate of relativistic heavy ions of up to 107 per spill (at the second focal plane), we have shown a conceptual design for a Cherenkov detector envisioned for the future TOF measurements employing Iodine Naphthalene (C10H7I) as a fluid radiator. The application of a liquid radiator allows the circulation of the active material and therefore to greatly reduce the effects of the degradation of the optical performance expected after exposure to the high ion rates at the Super-FRS. The prototype of a TOF-Cherenkov detector was designed, constructed and its key-properties have been investigated in measurements with heavy ions at CaveC at GSI. These measurements were performed with nickel ions at 300–1500 MeV/u and ion-beam intensities of up to 4×106 ions/spill of 8 s. As a first result a maximum detection efficiency of 70% and a timing resolution of 267 ps (σ) was achieved. We report the first attempt of time measurements with a Cherenkov detector based on a liquid radiator. Further optimization is required.
| Original language | English |
|---|---|
| Pages (from-to) | 207-212 |
| Number of pages | 6 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 866 |
| DOIs | |
| Publication status | Published - 11 Sep 2017 |
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Keywords
- Cherenkov detector
- Detection efficiency
- Heavy ions
- Super-FRS
- Time-of-Flight detector
- Timing accuracy
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation
Cite this
First beam test of a liquid Cherenkov detector prototype for a future TOF measurements at the Super-FRS. / Kuzminchuk-Feuerstein, Natalia; Ferber, Nadine; Rozhkova, E. I.; Kaufeld, Ingo; Voss, Bernd.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 866, 11.09.2017, p. 207-212.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - First beam test of a liquid Cherenkov detector prototype for a future TOF measurements at the Super-FRS
AU - Kuzminchuk-Feuerstein, Natalia
AU - Ferber, Nadine
AU - Rozhkova, E. I.
AU - Kaufeld, Ingo
AU - Voss, Bernd
PY - 2017/9/11
Y1 - 2017/9/11
N2 - In order to separate and identify fragmentation products with the Super-Fragment Separator (SuperFRS) at FAIR a high resolving power detector system is required for position and Time-Of-Flight (TOF) measurements. The TOF detector is used to measure the velocity of the particles and hence, in conjunction with their momentum or energy, to determine their mass and hence their identity. Aiming to develop a system with a precision down to about 50 ps in time and resistant to a high radiation rate of relativistic heavy ions of up to 107 per spill (at the second focal plane), we have shown a conceptual design for a Cherenkov detector envisioned for the future TOF measurements employing Iodine Naphthalene (C10H7I) as a fluid radiator. The application of a liquid radiator allows the circulation of the active material and therefore to greatly reduce the effects of the degradation of the optical performance expected after exposure to the high ion rates at the Super-FRS. The prototype of a TOF-Cherenkov detector was designed, constructed and its key-properties have been investigated in measurements with heavy ions at CaveC at GSI. These measurements were performed with nickel ions at 300–1500 MeV/u and ion-beam intensities of up to 4×106 ions/spill of 8 s. As a first result a maximum detection efficiency of 70% and a timing resolution of 267 ps (σ) was achieved. We report the first attempt of time measurements with a Cherenkov detector based on a liquid radiator. Further optimization is required.
AB - In order to separate and identify fragmentation products with the Super-Fragment Separator (SuperFRS) at FAIR a high resolving power detector system is required for position and Time-Of-Flight (TOF) measurements. The TOF detector is used to measure the velocity of the particles and hence, in conjunction with their momentum or energy, to determine their mass and hence their identity. Aiming to develop a system with a precision down to about 50 ps in time and resistant to a high radiation rate of relativistic heavy ions of up to 107 per spill (at the second focal plane), we have shown a conceptual design for a Cherenkov detector envisioned for the future TOF measurements employing Iodine Naphthalene (C10H7I) as a fluid radiator. The application of a liquid radiator allows the circulation of the active material and therefore to greatly reduce the effects of the degradation of the optical performance expected after exposure to the high ion rates at the Super-FRS. The prototype of a TOF-Cherenkov detector was designed, constructed and its key-properties have been investigated in measurements with heavy ions at CaveC at GSI. These measurements were performed with nickel ions at 300–1500 MeV/u and ion-beam intensities of up to 4×106 ions/spill of 8 s. As a first result a maximum detection efficiency of 70% and a timing resolution of 267 ps (σ) was achieved. We report the first attempt of time measurements with a Cherenkov detector based on a liquid radiator. Further optimization is required.
KW - Cherenkov detector
KW - Detection efficiency
KW - Heavy ions
KW - Super-FRS
KW - Time-of-Flight detector
KW - Timing accuracy
UR - http://www.scopus.com/inward/record.url?scp=85021239435&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85021239435&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2017.06.010
DO - 10.1016/j.nima.2017.06.010
M3 - Article
AN - SCOPUS:85021239435
VL - 866
SP - 207
EP - 212
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
ER -