IAC LeadFlourideCherenkovCrystalTests: Difference between revisions
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Radiation exposure tests in December for Hall A. | Radiation exposure tests in December for Hall A. | ||
We will have three days of beamtime (Dec 3 | We will have three days of beamtime (Dec 3-5). We will use the the 25-MeV linac to direct an electron beam upon the PbF2 crystals. The lead Flouride Crystals will be placed on a translator table so that each crystal can moved into the beam. The crystals are 30x30x185 mm^3 and are 1000g each. | ||
Need to know. | Need to know. | ||
a. beam current and rep rate | a. beam current and rep rate | ||
b. total time of exposure for each individual | b. total time of exposure for each individual crystals | ||
o Day 1: 5 hours of beamtime | o Day 1: 5 hours of beamtime | ||
1a) a first irradiation(blocks 1~4) ~5 hours Day 1 | 1a) a first irradiation(blocks 1~4) ~5 hours Day 1 | ||
2a) do a transparency measurement (blocks 1~4) ~3 hours Day 1 | 2a) do a transparency measurement (blocks 1~4) ~3 hours Day 1 | ||
3a) do a block (blocks 1~4) curing exposure to a blue light 24 hours day 1 day | 3a) do a block (blocks 1~4) curing exposure to a blue light 24 hours day 1 day | ||
o Day 2: 5 hours of beamtime | o Day 2: 5 hours of beamtime | ||
1b) a first irradiation(blocks 5~8) ~5 hours Day 2 | 1b) a first irradiation(blocks 5~8) ~5 hours Day 2 | ||
2b) do a transparency measurement (blocks 5~8) ~ | 2b) do a transparency measurement (blocks 5~8) ~3 hours Day 2 | ||
3b) do a block (blocks 5~8 curing exposure to a blue light 24 hours Day 2 and Day 3 | 3b) do a block (blocks 5~8 curing exposure to a blue light 24 hours Day 2 and Day 3 | ||
o Day 3: 5 hours + 5 hours of beamtime. | o Day 3: 5 hours + 5 hours of beamtime. | ||
4a) repeat a transparency measurement (blocks 1~4) ~3hours day 3 | 4a) repeat a transparency measurement (blocks 1~4) ~3hours day 3 | ||
5a) do a second irradiation (blocks 1~4) ~5 hours day 3 | 5a) do a second irradiation (blocks 1~4) ~5 hours day 3 | ||
3a) do a transparency measurement (blocks 1~4) ~3 hours day 3 | 3a) do a transparency measurement (blocks 1~4) ~3 hours day 3 | ||
4b) repeat a transparency measurement (blocks 5~8) ~ | 4b) repeat a transparency measurement (blocks 5~8) ~3 hours day 3 | ||
5b) do a second irradiation (blocks 5~8) ~5 hours day 3 at the end of | 5b) do a second irradiation (blocks 5~8) ~5 hours day 3 at the end of the day | ||
the day | |||
Revision as of 00:38, 18 November 2007
Radiation exposure tests in December for Hall A.
We will have three days of beamtime (Dec 3-5). We will use the the 25-MeV linac to direct an electron beam upon the PbF2 crystals. The lead Flouride Crystals will be placed on a translator table so that each crystal can moved into the beam. The crystals are 30x30x185 mm^3 and are 1000g each.
Need to know.
a. beam current and rep rate b. total time of exposure for each individual crystals
o Day 1: 5 hours of beamtime
1a) a first irradiation(blocks 1~4) ~5 hours Day 1 2a) do a transparency measurement (blocks 1~4) ~3 hours Day 1 3a) do a block (blocks 1~4) curing exposure to a blue light 24 hours day 1 day
o Day 2: 5 hours of beamtime
1b) a first irradiation(blocks 5~8) ~5 hours Day 2 2b) do a transparency measurement (blocks 5~8) ~3 hours Day 2 3b) do a block (blocks 5~8 curing exposure to a blue light 24 hours Day 2 and Day 3
o Day 3: 5 hours + 5 hours of beamtime.
4a) repeat a transparency measurement (blocks 1~4) ~3hours day 3 5a) do a second irradiation (blocks 1~4) ~5 hours day 3 3a) do a transparency measurement (blocks 1~4) ~3 hours day 3 4b) repeat a transparency measurement (blocks 5~8) ~3 hours day 3 5b) do a second irradiation (blocks 5~8) ~5 hours day 3 at the end of the day
Day 4 and Day 5 will be used to more curing and transparency measurement
The specifics are listed belwo
RunPlan:
References:
NIM articles:
File:Achenbach NIM A416 1998 pg357.pdf
Private Communications
File:FEL IrradiationTests 8-25-07.pdf
File:TransmissionTestProcedure J.Roche 10-15-07.pdf
File:CalorimeterHeatingEquations.pdf