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procedures:pinsources:pin_sources [2010/06/28 12:15] rhodges |
procedures:pinsources:pin_sources [2010/06/29 07:59] (current) rhodges |
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- | . | + | ===I. |
Before mounting pin sources, it is helpful to gather all the necessary materials: | Before mounting pin sources, it is helpful to gather all the necessary materials: | ||
+ | | ||
+ | * two tweezers: use what is most comfortable for you. The best for me was to use one with a thin, curved mouth and a second one with scissor-style opening. See pictures below. | ||
+ | * needle-nosed pliers | ||
+ | * set of metal slides, cleaned with acetone, in boxes with numbered slots | ||
+ | * thin plastic case to hold slide steady while mounting | ||
+ | * | ||
+ | * radiation meter (Betty has a digital one) | ||
+ | * finally, get the bundle of pin sources from Pete Griffins / Becky DeZess in ORCBS. | ||
- | -lay down thick paper towels on the table | + | ===II. Creating Bundles=== |
- | + | ||
- | -two tweezers: use what is most comfortable for you. The best for me was to use one with a thin, curved mouth and a second one with scissor-style opening. See pictures below. | + | |
- | + | ||
- | -needle-nosed pliers | + | |
- | + | ||
- | -set of metal slides, cleaned with acetone, in boxes with numbered slots | + | |
- | + | ||
- | -thin plastic case to hold slide steady while mounting | + | |
- | + | ||
- | -liquid super glue (not gel!) | + | |
- | + | ||
- | -radiation meter (Betty has a digital one) | + | |
- | + | ||
- | -finally, get the bundle of pin sources from Pete Griffins / Becky DeZess in ORCBS. | + | |
- | + | ||
- | II. Creating Bundles | + | |
Bundles of pin sources must be made at least 24 hours in advance. Check that Pete or Becky will be around when you want to put the pin sources into the irradiation machine, usually they leave by 4 pm. | Bundles of pin sources must be made at least 24 hours in advance. Check that Pete or Becky will be around when you want to put the pin sources into the irradiation machine, usually they leave by 4 pm. | ||
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Put together enough pins for all the slides you will need, plus extras. | Put together enough pins for all the slides you will need, plus extras. | ||
- | bundle.JPG | ||
- | pins_in_nut_New.JPG | + | {{: |
+ | {{: | ||
Trim off the wire ends, to enough room for the pins to go into the irradiator. You may need to bend the ends to fit. | Trim off the wire ends, to enough room for the pins to go into the irradiator. You may need to bend the ends to fit. | ||
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Mark one side of the pin sources with a colored Sharpie. | Mark one side of the pin sources with a colored Sharpie. | ||
- | III. Mounting Pin Sources | + | ===III. Mounting Pin Sources=== |
Mounting the pin sources is a two-person job. Remember the pins are radioactive! Gloves should be worn while handling hot pin sources. | Mounting the pin sources is a two-person job. Remember the pins are radioactive! Gloves should be worn while handling hot pin sources. | ||
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The first person should hold the slide onto the lip of the plastic case; this will keep it steady and level during the mounting process. | The first person should hold the slide onto the lip of the plastic case; this will keep it steady and level during the mounting process. | ||
- | hold_slide.JPG | + | |
- | hold_pin.JPG | + | {{: |
- | hira_06_2010 039.jpg | + | |
+ | {{: | ||
+ | {{: | ||
The second person should use the scissor-like tweezers to pick up a pin while the first person sets a drop of glue into the groove. | The second person should use the scissor-like tweezers to pick up a pin while the first person sets a drop of glue into the groove. | ||
Set the colored end of the pin into the groove of the slide. The first person should now use the curved tweezers to pinch the end of the pin against the slide. | Set the colored end of the pin into the groove of the slide. The first person should now use the curved tweezers to pinch the end of the pin against the slide. | ||
- | hira_06_2010 040.jpg | ||
- | set_groove.JPG | ||
- | holder.JPGThe second person can hold the pin in place with the scissor-style tweezers. We used a shallow box so that we could rest the tip of the tweezers against the bottom while holding the pin in the groove. | + | {{: |
+ | {{: | ||
- | hira_06_2010 042.jpg | + | The second person can hold the pin in place with the scissor-style tweezers. We used a shallow box so that we could rest the tip of the tweezers against the bottom while holding the pin in the groove. |
+ | |||
+ | {{: | ||
Keep the pin straight until the glue begins to set (30-60 seconds) but let go before it dries completely. | Keep the pin straight until the glue begins to set (30-60 seconds) but let go before it dries completely. | ||
- | IV. Testing Pin Sources | + | {{: |
+ | |||
+ | ===IV. Testing Pin Sources=== | ||
Before using the pin sources, you should measure the radiation with the digital radiometer. | Before using the pin sources, you should measure the radiation with the digital radiometer. | ||
- | hira_06_2010 045.jpgrad_meter.jpg | + | {{: |
+ | {{: | ||
Before you throw anything out, remember that anything that has touched the pin sources may now be radioactive. | Before you throw anything out, remember that anything that has touched the pin sources may now be radioactive. | ||
+ | |||
+ | [[procedures: |