Difference between revisions of "IAC LeadFlourideCherenkovCrystalTests"

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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 -- 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.
+
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 cryalt
+
   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) ~3h ours 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
+
  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) ~3hours 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
+
  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:

PbFl_RadTests-12-3-07

PbFl_RadTests-12-4-07

PbFl_RadTests-12-5-07


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