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tours:faq [2017/02/24 14:08] constan |
tours:faq [2019/03/18 16:15] constan [How LONG did it take to build the NSCL/Cyclotrons/other equipment?] |
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===== Questions with Incomplete Answers ===== | ===== Questions with Incomplete Answers ===== | ||
+ | |||
+ | ==== How much water does the laboratory use? ==== | ||
+ | //(from Brad Bull)// Our estimated annual usage is about 36M gallons. Peak is 250k a day during the hottest time of year. Most of the water is used for evaporative cooling (cooling towers). | ||
+ | |||
+ | ==== What will happen to the cyclotrons when they are removed to make way for the FRIB linac? ==== | ||
+ | //(from Brad Sherrill)// | ||
+ | They might be repurposed for other research at MSU. There are no plans to send them anywhere. | ||
==== Can I get a tour of the FRIB tunnel? ==== | ==== Can I get a tour of the FRIB tunnel? ==== | ||
- | //(from Jessica Kolp)// Each Wednesday at 3:30-5:00, there is a public tour at FRIB Trailer #6. For the safety of our visitors, the following rules apply for FRIB construction site tours: | + | //(from Jessica Kolp and Rebecca Abel)// By appointment, after 3:30pm, groups may schedule a public tour starting at FRIB Trailer #6. For the safety of our visitors, the following rules apply for FRIB construction site tours: |
* Closed-toe shoes or work boots required (no high heels, athletic/tennis shoes or sandals) | * Closed-toe shoes or work boots required (no high heels, athletic/tennis shoes or sandals) | ||
* Long pants required (no shorts, capris, or dresses) | * Long pants required (no shorts, capris, or dresses) | ||
* Must be more than 16 years old | * Must be more than 16 years old | ||
* Safety gear will be provided | * Safety gear will be provided | ||
+ | |||
+ | ==== Fun FRIB facts ==== | ||
+ | //(from Brad Bull's Staff Info talk 6/24/17)// | ||
+ | * Concrete: ~35000 cubic yards | ||
+ | * Steel: >10 million lbs | ||
+ | * Soil excavated: ~150,000 cubic yards | ||
+ | * that soil would make a mountain 175 feet high | ||
+ | * Much off-side fabrication (two sites in Lansing) sped up work | ||
+ | * Power consumption: 18 MW | ||
+ | * Final square footage: 580,000 (double what NSCL was before) | ||
+ | * Planning, design, and construction are only 10-20% of total cost of ownership! | ||
+ | |||
+ | ==== What is the heaviest rare isotope beam ever studied at NSCL? ==== | ||
+ | Tellurium-134. | ||
==== What kind of controls are used? ==== | ==== What kind of controls are used? ==== | ||
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* 2013: ReA3 reaccelerator commissioned. | * 2013: ReA3 reaccelerator commissioned. | ||
* 2015: ReA3 experiments begin. | * 2015: ReA3 experiments begin. | ||
- | * 2016: Cyclotron Gas Stopper online? | + | * 2019: Cyclotron Gas Stopper online? |
* 2022: FRIB comes online? | * 2022: FRIB comes online? | ||
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==== How many nuclei are in the beam? ==== | ==== How many nuclei are in the beam? ==== | ||
- | Beam density is measured in current... that's a good description for a beam of moving positively-charged ions. Our ECR can produce varying amounts of ions, depending on the desired element. One example is a "primary beam" from the source of oxygen-16. The ECR can reliably produce 100 pnA (particle nano-amps) of this element, which equates to between 10 and 100 billion particles per second (a beam power of about 1.3 kW). Once the CCF has fragmented the primary beam and produced a filtered rare isotope beam, it represents a tiny fraction of the initial current. Beams made of isotopes near stability will contain millions of particles per second, while extremely unstable/rare isotopes could be produced at the rate of one per hour or even less! | + | Beam density is measured in current... that's a good description for a beam of moving positively-charged ions. Our ECR can produce varying amounts of ions, depending on the desired element. One example is a "primary beam" from the source of oxygen-16. The ECR can reliably produce 100 pnA (particle nano-amps) of this element, which equates to between 10 and 100 billion particles per second (a beam power of about 0.2 kW). Once the CCF has fragmented the primary beam and produced a filtered rare isotope beam, it represents a tiny fraction of the initial current. Beams made of isotopes near stability will contain millions of particles per second, while extremely unstable/rare isotopes could be produced at the rate of one per hour or even less! |
==== How long does it take for a nucleus to get from the ion source to a detector? ==== | ==== How long does it take for a nucleus to get from the ion source to a detector? ==== |