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Synchrotron components questions
- What is the purpose of the electron gun?
☐ a) shoots electrons from a cannon
☐ b) produces protons by heating up an anode
☐ c) uses thermionic emission to produce electrons
☐ d) uses drift tubes to accelerate electrons - What is the speed of electrons after the linac?
☐ a) 56.995% of the speed of light
☐ b) 100 km/hr
☐ c) 100 miles/hr
☐ d) 99.995% of the speed of light - What does linac stand for?
☐ a) Linear alternating current
☐ b) Linear accelerator
☐ c) Lights not on at collimator
☐ d) Light accelerator - How does the booster ring work?
☐ a) Thermonic emission
☐ b) RF voltages simultaneous ramping magnetic strength and cavity fields
☐ c) Drift tubes
☐ d) High constant current difference between the cathode and the target anode - What is the speed/energy of the electrons in the booster ring?
☐ a) 3 GeV
☐ b) 100 GeV
☐ c) 99.95% speed of light
☐ d) 1000 km/hr - Why must the electron beam be contained in an ultra-high vacuum?
☐ a) So that it doesn’t get too hot
☐ b) To keep the protons inside
☐ c) To minimise noise
☐ d) To minimise attenuation of the electron beam
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Synchrotron specifications - What is the maximum energy of Australian Synchrotron?
☐ a) 1.5 GeV, ☐ b) 3 GeV, ☐ c) 5 GeV, ☐ d) 7 GeV - What is the circumference of the storage ring in the Australian synchrotron?
☐ a) 130 m, ☐ b) 165 m, ☐ c) 216 m, ☐ d) 245 m - What is the circumference of the booster ring of the Australian synchrotron?
☐ a) 130 m, ☐ b) 165 m, ☐ c) 216 m, ☐ d) 245 m - How many beam lines are there at the Australian synchrotron?
☐ a) 1, ☐ b) 3-5, ☐ c) 8-15, ☐ d) 26-32 - Which year did the Australian synchrotron open?
☐ a) 1997, ☐ b) 2001, ☐ c) 2004, ☐ d) 2007 - What are the circumference & the maximum energy of the Spring-8 synchrotron in
Japan?
☐ a) 8GeV, 1436m, ☐ b) 6GeV, 432m, ☐ c) 3GeV, 126m, ☐ d) 3GeV, 562m - What are the circumference & the maximum energy of the Diamond Light Source
in the UK?
☐ a) 8GeV, 1436m, ☐ b) 6GeV, 432m, ☐ c) 3GeV, 126m, ☐ d) 3GeV, 562m
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Australian Synchrotron imaging and medical beam line (IMBL)
Note: these questions will be discussed during the interview with the IMBL scientist.
- What is the length of the beam line?
☐ a) 16m, ☐ b) 130-150m, ☐ c) 315-350m, ☐ d) 42m - Why is the beam line this long?
☐ a) To minimise the electrical noise from the nearby air conditioning system
☐ b) To speed up the electrons
☐ c) To allow for beam expansion
☐ d) To minimise attenuation of the electron beam - What insertion devices are used in the beam line?
☐ a) Superconducting multi-pole wiggler magnet
☐ b) The yellow Wiggle
☐ c) Wedge dipole magnet
☐ d) The red Wiggle - What range of energies was the beam line designed for?
☐ a) 2–10 keV, ☐ b) 15–150 keV, ☐ c) 120–123 keV, ☐ d) 35–50 keV - How many hutches are there on the IMBL?
☐ a) 1, ☐ b) 2 pairs, ☐ c) 7, ☐ d) 3 pairs
Health and safety monitoring at the Australian Synchrotron (5%)
Note: relevant information can be found in the Australian Synchrotron – Visitor Safety
Information document. - What safety hazards are present at the Australian Synchrotron?
☐ a) radiation (when the machine is running)
☐ b) high voltage electrical systems
☐ c) high magnetic fields
☐ d) compressed air systems
☐ e) low pressure water systems
☐ f) All of the above - Individuals with which medical conditions/devices fitted must inform the designated
Australian Synchrotron staff member on arrival?
☐ a) A cardiac pacemaker or implantable defibrillator
☐ b) A catheter that has metal components
☐ c) A metal clip placed to prevent bleeding from an intracranial aneurysm
☐ d) A medication pump (such as that used to deliver insulin or a pain-relieving drug)
☐ e) A cochlear (inner ear) implant
☐ f) All of the above
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Diamond Light Source (UK)
Watch the following video and answer the following questions.
Video: Tour of Diamond Light Source
https://www.diamond.ac.uk/Public/VisitUs/Virtual-Visit.html#
Note: there are a couple of videos on the above web page, make sure you watch the correct
one - What day each week do they turn the beamlines off for maintenance?
☐ a) Monday, ☐ b) Tuesday, ☐ c) Thursday, ☐ d) Sunday - How regularly do they put current back into the beam, and what is the constant
current?
☐ a) Every 24 hrs, 200 mA
☐ b) Every 1 hr, 100 mA
☐ c) Every 10 min, 300 mA
☐ d) Every 6 hrs, 200 mA - How thick is the roof of the concrete tunnel in which the particle accelerator is
placed?
☐ a) ~30 cm, ☐ b) ~50 cm ☐ c) ~1.4m, ☐ d) ~2.2 m - How many laps (approximately) of the booster ring do the electrons complete to
increase their energy from 100 MeV to 3 GeV?
☐ a) 1000, ☐ b) 5,500 ☐ b) 15,000, ☐ c) ~150,000 - What type of magnets are green coloured in the storage ring?
☐ a) Bending magnets
☐ b) Focussing magnets
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Synchrotron Research Paper Questions
Consult the “Finding research article – Synchrotron” document and complete the following
questions for the article that you have been assigned.
- What is the full title of the research article
- What is the name of the institution(s) of the first author
- In your own words provide a brief summary (few sentences) explaining what the
synchrotron was being used to help study and why the topic is of interest (avoid using
any acronyms) - What is the name of the synchrotron and beamline that was used for imaging, or
used to produce example data - What was the energy of synchrotron X-rays used for imaging (if provided)
Sample Solution
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