Possible Sciences with weather balloons 1. Experiment to measure the concentrations of Ozone , Carbon di-oxide and other constituents and aerosol etc. and quantify the changes in chemical balance over place and time. 2. Effect of green house effect, man made propellers etc. on the vertical profile of environmental properties like Temperature and pressure etc. and on the abundance of the chemical species like ozone, CO 2 etc. 3. Study the atmospheric plasma flow and magnetic field and interaction of them with Cosmic wind 4. Effect of Solar activity on atmosphere, on geomagnetic field, Ionization at different Heights. Etc. 5. VLF amplitude measurements at different height for ionospheric studies 6. Study the cloud distribution, study the effect of Industry in air pollution in different industrial area. And more. . . . .
Nation wide balloon experiment Nation wide experiment with recoverable weather balloons will allow us scientific studies on Atmosphere and astronomy Throughout the year. Simultaneous studies like 1. Effect of astronomical events (like solar flare or solar wind) on atmosphere 2. Measurements of chemical abundances in atmosphere all over the country etc. can be done with balloons for which recovery is not important Possible places for weather balloon experiments with suitable time span
LAB FACILITIES FOR BALLOON and VLF EXPERIMENT PCB designing CNC machine SMD Workstation Climate Chamber 1 GHz spectrum analyzer Drill Machine 100 MHz DSO with 2 KV High Voltage source for the experimental setup of Giger Counter
GPS Communication System GPS Antenna Walky- Talky GPS Trans receiver circuit Typical profile of the ascent and descent of a balloon. In this Dignity-20 mission the burst happened at 36 km. The ascent took about 150 minutes and the descent took about 50 minutes Payload for communication system Typical trajectory of a balloon between lift-off and landing. Here Dignity-20 mission trajectory is shown on a Google map and Google earth from the GPS data.
Si-PIN and Cd. Te Photo Diode detector and results Fig. : Si-PIN photo diode for Balloon mission (left) and its analog for geant 4 simulation (right). Calibration with Eu 152 (left) and Ba 133 (right) The spectrum of an X type solar flare as seen by a Si-PIN detector (left) and cd. Te detector(below) at various heights. Energy Spectrum of Am-241 Energy Channel calibration for the Sphinx payload presented Energy Spectrum of Am-241
GM & MUON detector and results D 10 Payload Cosmic ray counts as a function of time between launching and landing of the payload (left). Generally the same profile is seen while rising and falling after the balloon burst. When converted to height the average data is shown on the right. At ~ 15 km, the count rate is highest as most of the secondary cosmic rays are generated there. At a higher altitude the count is lower, since the air is thin. Muon Detector Raw data showing distribution of Muon count rate in D 17 mission D 22 Payload The payload box containing the GM and Muon counters in the balloon in D 16 GM Tube D 16 Muon Data D 12 Payload
BICRON PMT (2” Dia) detector and results D 28 Cosmic ray counts (per minute) in the PMT with time (in min). The red curvs gives the count below 1000 channel. The curve is the total count, and the blue one is the subtracted count rate D 27 Cosmic ray counts (per minute) in the PMT varying with height in km. The red curvs gives the count below 1000 channel. The curve is the total count, and the blue one is the subtracted count rate
Hamamatsu PMT (1” x 1”)detector and results Complete Payload setup Resolution Vs. Energy Calibration Cosmic ray counts (per minute) in the PMT with time (in min). The red curvs gives the count below 1000 channel. The curve is the total count, and the blue one is the subtracted count rate D 23 Payload Spectrum of Ba-133 Payload setup using Arm-9 processor Spectrum of Am-141
Navigation Unit IMU unit IMU Block for data acquisition Variation of D 17 tilt angle w. r. t. zenith from accelerometer Angular velocity of D 17 With time obtained From gyroscope Azimuthal variation of orientation of D 30 obtained from magnetometer D 27 coverage in galactic coordinate
The nature of the tilt of the payload and the angular velocity as a function of height in the D-20 mission. Clearly, the pointing accuracy is higher beyond an altitude of 25 km. D 30 height vs temperature D 26 gyro data with sun position D 21 payload with navigation unit D 30 height vs Pressure
SUN SENSOR
Study of Dual Balloon dynamics D 23 D 28 D 26 D 29 D 27 D 30
D 9 Payload D 4 Payload D 18 D 10 Payload D 2 Payload D 6 Payload after Recover D 31 Payload Ejection System VLF MICRO ANTENNA D 11 Payload D 3 Payload
FUTURE PAYLOADS MINT HARSHAW 3” X 3” PMT Cs. I Scntillator MINT BICRON 3” X 3” PMT CO sensor Proportional Counter PMT
MAJOR BALLOON EXPERIMENTS PERFOMED Dignity XI : Cosmic ray study with Si PIN detector onboard a weather balloon. On 12 -03 -2011 Dignity XII: Cosmic ray study with Geiger-M¨uller counter onboard a weather balloon on 14 -03 -2011 Dignity XIII: Cosmic ray study with Geiger-M¨uller counter onboard a weather balloon on 14 -05 -2011 Dignity XIV: Cosmic ray study with Geiger-M¨uller counter onboard a weather balloon on 15 -05 -2011 Dignity XV: weather balloon with a meteoric dust collector on 20 -10 -2011 Dignity XVI: Cosmic ray study with Geiger-M¨uller and Muon counter onboard a weather balloon on 20 -10 -2011 Dignity XVII: Cosmic ray study with Muon counter with a 6 DOF navigation unit onboard a weather balloon 11 -11 -2011
MAJOR BALLOON EXPERIMENTS PERFOMED Dignity XVIII : Meteoric dust collector onboard a weather balloon on 20 -11 -2011 Dignity XIX: Cosmic ray study with Muon counter onboard a weather balloon on 21 -11 -2011 Dignity XX: X-ray study with BGO scintilator with Hamamatsu PMT on 22 -112011 Dignity XXI: Cosmic ray study with Muon counter and 9 DOF navigation unit with Pressure and temperature sensor board onboard a weather balloon on 7 -05 -2012. Dignity XXII: Cosmic ray study using Russian Geiger tube with Pressure and temperature sensor board on 08 -05 -2012 Dignity XXIII: X-ray study with Na. I(Ti) scintilator counter with PMT (with collimator), Muon counter and 6 DOF with Pressure and temperature sensor board onboard a weather balloon on 09 -05 -2012 Dignity XXIV: X-ray study with Na. I(Ti) scintilator counter with PMT (with collimator) and 6 DOF with Pressure and temperature sensor board onboard a weather balloon on 10 -05 -2012
MAJOR BALLOON EXPERIMENTS PERFOMED Dignity XXV: Cosmic ray study with Muon counter with collimator and 9 DOF with Pressure and temperature sensor boardnavigation unit onboard a weather balloon on 12 -05 -2012 Dignity XXVI: X-ray study with Na. I(Ti) scintilator counter with Hamamatsu PMT (with collimator), 6 DOF with Pressure and temperature sensor board and SMS system onboard a weather balloon on 23 -05 -2012 Dignity XXVII: X-ray study with Na. I(Ti) scintilator counter, BICRON PMT, 9 DOF with Pressure and temperature sensor board and SMS system onboard a weather balloon. On 24 -05 -2012 Dignity XXVIII: X-ray study with Na. I(Ti) scintilator counter, BICRON PMT, 9 DOF with Pressure and temperature sensor board and SMS system onboard a weather balloon. On 25 -05 -2012 Dignity XXIX : X-ray study with Na. I(Ti) scintilator counter, BICRON PMT, 9 DOF with Pressure and temperature sensor board and SMS system onboard a weather balloon. On 04 -06 -2012
MAJOR BALLOON EXPERIMENTS PERFOMED Dignity XXX: X-ray study with Na. I(Ti) scintilator counter, BICRON PMT, 9 DOF with Pressure and temperature sensor board and SMS system onboard a weather balloon. On 05 -06 -2012 Dignity XXXI: Study of Venus transit using Telescope and camera on 06 -06 -2012
Скачать презентацию Possible Sciences with weather balloons 1 Experiment to
c7f5a99d81760933c80cf570a60024c2.ppt