Difference between revisions of "G2p optics"
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| + | Short Optics Plan | ||
| + | Define the following jobs: | ||
| + | A. Acceptance calib, sieve out, raster on and off (large C12, no LHe) B. Delta scan, (sieve in, C12, no LHe) C. Beam persion scan (Sieve in, large C12, no Lhe, 12 points or 8 points) D. Pointing (Sieve in, CH2, need refill LHe) | ||
| + | Here is the summary of all optics: | ||
| + | 1. 0T @ 2.257: Do A, move sieve in, do B and C(12 points), refill LHe do D. | ||
| + | At the end take elastic NH3 data to check NH3 thickness. | ||
| + | When finish: move sieve out; Ramp field up to 2.5T; Drian LHe | ||
| + | 2. 2.5T|90deg @ 2.257: Do A, move sieve in, do B and C(12 points), refill LHe do D | ||
| + | When finish: Ramp field up to 2.5T; Drian Lhe out | ||
| + | 3. 5.01T|6deg @ 2.257: Do B and C(8 points), refill LHe do D. 4. 2.5T|90deg @ 1.706: Do A, move sieve in, do B and C(8 points), refill LHe do D When finish: Rotate target field to 6 deg; Ramp up to 5.01T; Drian Lhe out | ||
| + | 5. 5.01T|6deg @ 1.706: Do B and C(8 points), refill LHe do D | ||
| + | When finish: Move sieve out; Rotate target field to 90 deg; Ramp up to 5.01T; Drain LHe out | ||
| + | 6. 5.01T|90deg @ 2.257: Do A, move sieve in, do B and C(8 points), refill LHe do D | ||
| + | When finish: Turn off target field; Drian Lhe, move sieve out. | ||
| + | 7. 0T @ 1.159: Do A, move sieve in, do B and C(8 points), refill LHe do D. | ||
| + | At the end take elastic NH3 data to check NH3 thickness. | ||
| + | When finish: move sieve out; Ramp field up to 2.5T; Drian Lhe out | ||
| + | 8. 2.5T|90deg @ 1.159: Do A, move sieve in, do B and C(8 points), refill LHe do D | ||
| + | When finish: Ramp field up to 5.01T; Drian Lhe out | ||
| + | 9. 5.01T|6deg @ 1.159: Do B and C(8 points), refill LHe do D | ||
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| + | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/g2p_optics_plan.pdf Detail G2P|GEP optics plan] | ||
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| + | ---- | ||
| + | For commissioning: | ||
*[https://hallaweb.jlab.org/wiki/index.php/G2p_optics_procedure Procedure suggested by Vince] | *[https://hallaweb.jlab.org/wiki/index.php/G2p_optics_procedure Procedure suggested by Vince] | ||
*[https://hallaweb.jlab.org/wiki/index.php/G2p_other_optics_plan Procedure suggested by Jin] | *[https://hallaweb.jlab.org/wiki/index.php/G2p_other_optics_plan Procedure suggested by Jin] | ||
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Revision as of 11:39, 1 March 2012
Short Optics Plan Define the following jobs: A. Acceptance calib, sieve out, raster on and off (large C12, no LHe) B. Delta scan, (sieve in, C12, no LHe) C. Beam persion scan (Sieve in, large C12, no Lhe, 12 points or 8 points) D. Pointing (Sieve in, CH2, need refill LHe) Here is the summary of all optics: 1. 0T @ 2.257: Do A, move sieve in, do B and C(12 points), refill LHe do D. At the end take elastic NH3 data to check NH3 thickness. When finish: move sieve out; Ramp field up to 2.5T; Drian LHe 2. 2.5T|90deg @ 2.257: Do A, move sieve in, do B and C(12 points), refill LHe do D When finish: Ramp field up to 2.5T; Drian Lhe out 3. 5.01T|6deg @ 2.257: Do B and C(8 points), refill LHe do D. 4. 2.5T|90deg @ 1.706: Do A, move sieve in, do B and C(8 points), refill LHe do D When finish: Rotate target field to 6 deg; Ramp up to 5.01T; Drian Lhe out 5. 5.01T|6deg @ 1.706: Do B and C(8 points), refill LHe do D When finish: Move sieve out; Rotate target field to 90 deg; Ramp up to 5.01T; Drain LHe out 6. 5.01T|90deg @ 2.257: Do A, move sieve in, do B and C(8 points), refill LHe do D When finish: Turn off target field; Drian Lhe, move sieve out. 7. 0T @ 1.159: Do A, move sieve in, do B and C(8 points), refill LHe do D. At the end take elastic NH3 data to check NH3 thickness. When finish: move sieve out; Ramp field up to 2.5T; Drian Lhe out 8. 2.5T|90deg @ 1.159: Do A, move sieve in, do B and C(8 points), refill LHe do D When finish: Ramp field up to 5.01T; Drian Lhe out 9. 5.01T|6deg @ 1.159: Do B and C(8 points), refill LHe do D
For commissioning:
