Team B

Instructor: Dr. Son Cao

Supporter: Ph.D. student Quyen Phan; M.Sc. Sang Truong

Members:

• Nguyen Thi Yen Binh
• Trinh Hoang Dieu Ngan
• Dang Quoc Trieu
• Nguyen Duc Phu
• Nguyen Thi Nhung

Group B Final presentation and final report

• MPPC properties
  • observe 1pe, 2pe and the corresponding threshold
  • check the rising/falling time (note the definition of the rising and falling time)
  • dark count rate with 1pe; 2pe; 3pe
  • check `pattern` trigger (need calibration?) with coincidence of 2, 3
    • Use DRS4 waveform generator (or Arduino) for example
    • Coincidence gate

• Fluorescence lifetime by exciting with UV LED
  • Measure rising/falling time with oscilloscope (note the signal size)
  • Fit with exponential and/or oscilloscope measurement function

• Cosmic muon counter
  • calculate the rate with area of detector (size of plastic scintillator)
  • Scintillator inefficiency (rate of 1,2,4; vs rate of 1,2,3,4)
  • Muon Signal corresponding to how many P.E?

1. Act#1 (1.5h, Feb. 27 AM): safety, lab arrangement, components, rules; light source (LED) driven with waveform generator, arduino or analog discovery; various LED wavelength; soldering a circuit for LED (this is to use with MPPC later, so think a bit about design to easily coupling to MPPC (direct or with optical fibers, mimicking the use of the WLS))

2. Act #2 (1.75h, Feb. 27 PM) oscilloscope functionality, signal generation with analog discovery, counting function and coincidence pattern trigger

3. Act #3 (2.75h, Feb. 28 AM): Single MPPC circuit; soldering, testing signal, pedestal; noise mitigation with Faraday case, checked if can see single P.E without amplifier?

4. Act #4 (2.75h, Feb. 28 PM): Start working with MPPC array; measure MPPC characteristics (noise rate, gain; timing response); measure the fluorescence lifetime with Thorlabs fluorescence plates

5. Act #5 (2.75h, Mar. 1 AM): Continue with fluorescence lifetime measurement if needed. measure coincidence rate. Work in combination of Scintillator, wavelength shifting fiber and photosensor; concept of muon counter; NIM modules to use: discriminator, scaler, coincidence (and delay if needed)

6. Act #6 (2.75h, Mar. 1 PM): Data taking and analysis

7. Act #7 (2.75h, Mar. 2 PM): Data taking and analysis

8. Act #8 (2.75h, Mar. 3 AM): Data taking and analysis

9. Act #9 (2.75h, Mar. 3 PM): Data taking and analysis

• MPPC array 4 x4, model Hamamatsu S13361-3050AE-04, specification https://www.hamamatsu.com/content/dam/hamamatsu-photonics/sites/documents/99_SALES_LIBRARY/ssd/s13361-3050_series_kapd1054e.pdf
  • AiT power supply model ABPS and amplifier model PBA116L
• One single MPPC S13360-1225 https://www.hamamatsu.com/content/dam/hamamatsu-photonics/sites/documents/99_SALES_LIBRARY/ssd/s13360_series_kapd1052e.pdf: try to soldering; check and suppress the noise. No need amplifier to observe the signal; use along with Matsusada low-noise DC power supply
• 4 plastic scintillator and wavelength shifting fiber
  • size: 2.5cm width x 1.3 cm thick x 25 cm long
• Oscilloscope SDS 1104X-E/ with ethernet connected https://siglentna.com/USA_website_2014/Documents/UserManual/SDS1000X&Xplus_UserManual_UM0101X-E02A.pdf
• Optical fibers (Thorlabs 2m) and unknown
• DAQ PC: IFIRSE06/ Ubuntu 22.04; relevant software available: ROOT, GEANT4