Мақаланы E-mail арқылы жіберу Сцинтилляционный времяпролетный годоскоп
- Авторлар: Алексеев В.И.1, Басков В.А.1, Варфоломеева Е.А.1, Дронов В.А.1, Львов А.И.1, Кольцов А.В.1, Кречетов Ю.Ф.2, Полянский В.В.1, Сидорин С.С.1
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Мекемелер:
- Физический институт им. П.Н. Лебедева Российской академии наук
- Объединенный институт ядерных исследований
- Шығарылым: № 1 (2024)
- Беттер: 20-25
- Бөлім: ТЕХНИКА ЯДЕРНОГО ЭКСПЕРИМЕНТА
- URL: https://freezetech.ru/0032-8162/article/view/670231
- DOI: https://doi.org/10.31857/S0032816224010036
- EDN: https://elibrary.ru/gbjzxe
- ID: 670231
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Fig. 1. Scheme of the experimental setup for searching for heavy lepton at the FIAN Pakhra accelerator: T – copper target; S1 – S3 – scintillation counters; G1 and G2 – scintillation hodoscopes; M – permanent magnet; CC1 and CC2 – scintillation spectrometers.
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Fig. 2. Scheme of the SVPG: 1 – duralumin frame, 2 – photomultiplier tube light-protective casing, 3 – scintillation rod, 4 – metallized mylar, 5 – black paper, 6 – photomultiplier tube-85, 7 – photomultiplier tube voltage divider.
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Fig. 3. Calibration schemes of the SVPG: a – calibration using a radioactive source; b – calibration using a secondary electron beam. S1 and S2 – trigger scintillation counters; K – lead collimator; C1, C2 – SVPG channels; З1–З4 – time delay blocks; Ф1–Ф4 – blocks of shapers with a tracking threshold; СС – coincidence circuit; TDC – time-to-digital converter; Start – start signal of the TDC block; Stop – time signals from channels C1 and C2 of the SVPG; KK – crate controller of the CAMAC system; PS – personal computer.
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Fig. 4. Distribution of coordinates obtained using the SVPG module, with the radioactive source (a) and counters S1 and S2 positioned at the center of the module (x = 0) in the case of electrons with an energy of 20 MeV passing through the SVPG (b).
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Fig. 5. Dependences of the coordinate resolution of the SVPG module on the voltages on the voltage dividers of the photomultiplier tube (1 – left, 2 – right) with the position of the radioactive source at the center of the module (x = 0).
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Fig. 6. Dependence of the electron registration efficiency of the SVPG module on the voltages on the photomultiplier voltage dividers at U = Ul = Ur (x = 0) (electrons from a radioactive source (1); electron beam with an energy of 20 MeV (2)).
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Fig. 7. Dependence of the coordinate resolution of the SVPG module on the position of the radioactive source (1) and counters S1, S2 (2) on the working face of the SVPG module.
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Fig. 8. Dependence of the coordinate resolution of the SVPG module on the voltage on the voltage dividers of the photomultiplier tube at U = Ul = Ur and the position of the counters S1 and S2 at the center of the module (x = 0).
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