September 12, 2011

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summary what was been done

Run #	Beam	Dump magnet	Collimator	Radiator 10 um Al	Target	Comments
2359	Centered	In	Open	Out	No	Test radiator in/out. R(upstream) = 157/40244 = 0.0039 e+/pulse, R(downstream) = 183/40244 = 0.0045 e+/pulse
2360	Centered	In	Open	Centered	No	Test radiator in/out. R(upstream) = 898/40244 = 0.0223 e+/pulse, R(downstream) = 1040/40244 = 0.0258 e+/pulse About 83% of photons are coming from the radiator. Good
2361	Up 2 mm	In	Open	Up 2 mm	No	Test radiator in/out. R(upstream) = 730/40839 = 0.0179 e+/pulse, R(downstream) = 867/40839 = 0.0212 e+/pulse
2362	Up 2 mm	In	Open	Out	No	Test radiator in/out. R(upstream) = 172/41035 = 0.0042 e+/pulse, R(downstream) = 258/41035 = 0.0063 e+/pulse About 77% of photons are coming from the radiator. Good
2363	Up 2 mm	In	Open	Out	No	Test radiator in/out. Added 1" Al hardener against Cu bricks after vacuum window. R(upstream) = 87/41037 = 0.0021 e+/pulse, R(downstream) = 119/41037 = 0.0029 e+/pulse
2364	Up 2 mm	In	Open	Up 2 mm	No	Test radiator in/out. R(upstream) = 777/50837 = 0.0153 e+/pulse, R(downstream) = 847/50837 = 0.0167 e+/pulse About 86% of photons are coming from the radiator. Good
2365	Up 2 mm	In	Open	Up 2 mm	No	Test radiator in/out. Now 2" Al hardener against Cu bricks after vacuum window. R(upstream) = 574/41235 = 0.0139 e+/pulse, R(downstream) = 717/41235 = 0.0174 e+/pulse
2366	Up 2 mm	In	Open	Out	No	Test radiator in/out. R(upstream) = 117/41035 = 0.0028 e+/pulse, R(downstream) = 136/41035 = 0.0033 e+/pulse About 80% of photons are coming from the radiator. Good
2367	Down 2 mm	In	Open	Out	No	Test radiator in/out. Removed 2" Al hardener R(upstream) = 160/41036 = 0.0039 e+/pulse, R(downstream) = 199/41036 = 0.0048 e+/pulse
2368	Down 2 mm	In	Open	Down 2 mm	No	Test radiator in/out. R(upstream) = 628/40639 = 0.0154 e+/pulse, R(downstream) = 714/40639 = 0.0176 e+/pulse About 75% of photons are coming from the radiator. Good
2369	Down 2 mm	In	Open	Down 2 mm	No	Test radiator in/out. Added 1" Al hardener against Cu bricks after vacuum window. R(upstream) = 454/40640 = 0.0111 e+/pulse, R(downstream) = 536/40640 = 0.0132 e+/pulse
2370	Down 2 mm	In	Open	Out	No	Test radiator in/out. R(upstream) = 98/40639 = 0.0024 e+/pulse, R(downstream) = 112/40639 = 0.0027 e+/pulse About 78% of photons are coming from the radiator. Good
2371	Up 2 mm	In	Open	Up 2 mm	No	Test radiator in/out to reproduce previous result. Same 1" Al hardener against Cu bricks after vacuum window. R(upstream) = 935/40641 = 0.0230 e+/pulse, R(downstream) = 1050/40641 = 0.0258 e+/pulse
2372	Up 2 mm	In	Open	Out	No	Test radiator in/out. R(upstream) = 153/40640 = 0.0038 e+/pulse, R(downstream) = 144/40640 = 0.0035 e+/pulse About 84% of photons are coming from the radiator. Good
2374	Up 2 mm	In	Open	Up 2 mm	DU plate	DU plate oriented 45 and 45 degree. Same 1" Al hardener upstream of collimator. Too short
2375	Up 2 mm	In	Open	Up 2 mm	DU plate	Same. Re-doing 2374 R(beam left) = 0.0003 n/pulse R(beam right) = 0.00024 n/pulse R(upstream) = 0.022 e+/pulse
2376	Up 2 mm	In	Open	Out	DU plate	R(beam left) = 0/176520 = 0 n/pulse R(beam right) = 0/176520 = 0 n/pulse R(upstream) = 659/176520 = 0.0037 e+/pulse About 83% of photons are coming from the radiator. Good
2377	Down 2 mm	In	Open	Out	DU plate	R(beam left) = 6/166815 = 0.0000359 n/pulse R(beam down) = 4/166815 = 0.0000239 n/pulse R(beam right) = 20/166815 = 0.000119 n/pulse R(upstream) = 411/166815 = 0.0025 e+/pulse R(upstream) = 423/166815 = 0.0025 e+/pulse
2378	Down 2 mm	In	Open	Down 2 mm	DU plate	R(beam 45 left) = n/pulse R(beam down) = 174/238320 = 0.000730 n/pulse R(beam 45 right) = n/pulse R(upstream) = 3258/238320 = 0.0137 e+/pulse R(upstream) = 3757/238320 = 0.0158 e+/pulse About 82% of photons are coming from the radiator. Good
2379	Down 2 mm	In	Open	Down 2 mm	DU plate	Increased voltage on 2 photonics (A22 & A24) detectors from -1600 -> -1700 V R(beam 45 left) = n/pulse R(beam down) = n/pulse R(beam 45 right) = n/pulse R(upstream) = 4061/248339 = 0.0163 e+/pulse R(upstream) = 5220/248339 = 0.0210 e+/pulse