MCP work
をテンプレートにして作成
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開始行:
[[S1249 Phase-3]]
*measurement [#gf88ea9d]
-offset
-distortion
*IP address [#f707fb3d]
-daq machine 123
-stage machine +22
*for sum problem [#peb967db]
&ref(./line2.png,50%);~
-4ns jitter = 40 ch
-it might be correspond to the width of sum histogram. the width is 40ch.
-DLのスレッショルドをアンバランスにとれば、和差プロットの傾きは解決できそうだ。
-ソフトウェア上でも解決できないか。
*Beta source test [#n5fefd8c]
**run sheet [#nb32d750]
-dat1,2 : MCP500,DL250,ref3150,sig3200,hold3100, bias2.3
-dat3 : ref3150->ref3175
-dat4 : ref3175->ref3150
-dat5 : DL250 to 125
-dat6 : ref, sig 3200
-dat7 : bias 2.375. ref-sig 25V, threshold is same
-dat8 : with AIMS~
**run 280 [#o834b319]
-see ag/fujiwara/MCPdata, run0280.root and MCP8.C are available.
**this moment [#he97cb11]
&ref(./timing_delayline.png,50%);~
- purple: tdc trigger, blue, green: delay line layer w left and right respectively.~
&ref(./beta1.gif,50%);~
&ref(./image_projx_nearthecenter.gif,50%);~
-vw layer image, selected single hit event
*MCP positive ion detection mode [#x1ee9b8d]
**First light(2011/6/17) [#a58d1a2c]
&ref(./20110617_01.png,50%);
-dark count - 3Hz (Vacuum gauge OFF)
-2.3kV bias voltage
--Front is stable at 0V.
--Back -2.3kV
--Surface current 35uA
--Holder +250V, reference wire +250V, Signal wire +300V
-Blue line; w/o Amp, Pink line;w/ amp.
--sometimes amp'd out was saturated.
**Nominal voltage [#wb82676c]
&ref(./20110617_02.png,50%);
-2.4kV bias voltage.
-36uA surface current.-> 67MOhm.
***Next things to do [#gb68cff4]
-The negative particle detection mode.
-with beta source
-and try to UV -photoelectron emission/ By using UV lamp. UV can be introduce through the view port.
*Negative mode (electron detection mode) [#c640971c]
**Voltage- Current check [#jb6fa4ec]
-1.2kV bias. 300V front, 1500V back, others 1500V, 17uA
--Front voltage is stable.
-1.3kV bias, 300V front 1600V back others 1600V, 18~19uA
-Froating effect can be seen. when Back voltage set to 1.7kV, front voltage increase 300 -> 325V.
-1.4kV bias(F350 - B1750 - Others1750), 20uA.
These are consistent with positive ion mode.
**Negative detection mode, Low bias voltage(2.1kV) [#vbaed71f]
&ref(./20110617_03.png,50%);
-2.1kV bias(F550- B2650-Others2650),31uA.
**Negative detection mode, Nominal bias voltage(2.3kV) [#hd9a222e]
&ref(./20110617_05.png,50%);
-2.3kV bias(600 - 2900 - 3050 -3050 - 3100),35uA
**With beta source [#oe3dcd59]
&ref(./20110617_06.png,50%);
-source set nearby the positron window.
-rate w/ source Sr90 1kHz
-rate w/o source 10Hz
**Delay line signal [#df5b55fb]
***z1 [#ffba815e]
&ref(./20110617_07.png,50%);
-pink - MCP(front), green - Delay line.
-terminal 1(z1)
***x1 [#g4984178]
&ref(./20110617_08.png,50%);
-pink - MCP(front), green - Delay line.
-terminal 3(x1)
***y1 [#g4984178]
&ref(./20110617_09.png,50%);
-pink - MCP(front), green - Delay line.
-terminal 5(y1)
*UV [#p7799818]
**100Hz [#xa40a200]
&ref(./20110617_10.png,50%);
-after cut UV ramp, rate back to 5Hz.
-UV on, but light left from the view port -> 5Hz.
**1Hz [#k10b879f]
&ref(./20110617_11.png,50%);
-UV light 1Hz ->count syncronize. 1pulse -> 100~200 signal.
-long time constant? pulse structure changed drastically.
--photoelectron from MCP? because, delay line also saturated.
**after UV off [#xddc2f76]
&ref(./20110617_12.png,50%);
**UV degrade [#p90963f1]
-view port overlayed by pylex glass, in order to reduce UV.
**&size(18){&color(red){KEEP Xenon lamp rep rate < 530Hz.};}; [#te4f77c8]
**20Hz [#kd407d89]
-rate 110count/sec`20Hz -> 5count/pulse
**1Hz [#a0b48b46]
-rate 532counts/60sec 1Hz-^> 9count/pulse
**500Hz [#v4ec268d]
-persist
&ref(./20110617_15.png,50%);&br;
-single
&ref(./20110617_16.png,50%);
-time structure
&ref(./20110617_17.png,50%);
-green delay line, pink MCP
終了行:
[[S1249 Phase-3]]
*measurement [#gf88ea9d]
-offset
-distortion
*IP address [#f707fb3d]
-daq machine 123
-stage machine +22
*for sum problem [#peb967db]
&ref(./line2.png,50%);~
-4ns jitter = 40 ch
-it might be correspond to the width of sum histogram. the width is 40ch.
-DLのスレッショルドをアンバランスにとれば、和差プロットの傾きは解決できそうだ。
-ソフトウェア上でも解決できないか。
*Beta source test [#n5fefd8c]
**run sheet [#nb32d750]
-dat1,2 : MCP500,DL250,ref3150,sig3200,hold3100, bias2.3
-dat3 : ref3150->ref3175
-dat4 : ref3175->ref3150
-dat5 : DL250 to 125
-dat6 : ref, sig 3200
-dat7 : bias 2.375. ref-sig 25V, threshold is same
-dat8 : with AIMS~
**run 280 [#o834b319]
-see ag/fujiwara/MCPdata, run0280.root and MCP8.C are available.
**this moment [#he97cb11]
&ref(./timing_delayline.png,50%);~
- purple: tdc trigger, blue, green: delay line layer w left and right respectively.~
&ref(./beta1.gif,50%);~
&ref(./image_projx_nearthecenter.gif,50%);~
-vw layer image, selected single hit event
*MCP positive ion detection mode [#x1ee9b8d]
**First light(2011/6/17) [#a58d1a2c]
&ref(./20110617_01.png,50%);
-dark count - 3Hz (Vacuum gauge OFF)
-2.3kV bias voltage
--Front is stable at 0V.
--Back -2.3kV
--Surface current 35uA
--Holder +250V, reference wire +250V, Signal wire +300V
-Blue line; w/o Amp, Pink line;w/ amp.
--sometimes amp'd out was saturated.
**Nominal voltage [#wb82676c]
&ref(./20110617_02.png,50%);
-2.4kV bias voltage.
-36uA surface current.-> 67MOhm.
***Next things to do [#gb68cff4]
-The negative particle detection mode.
-with beta source
-and try to UV -photoelectron emission/ By using UV lamp. UV can be introduce through the view port.
*Negative mode (electron detection mode) [#c640971c]
**Voltage- Current check [#jb6fa4ec]
-1.2kV bias. 300V front, 1500V back, others 1500V, 17uA
--Front voltage is stable.
-1.3kV bias, 300V front 1600V back others 1600V, 18~19uA
-Froating effect can be seen. when Back voltage set to 1.7kV, front voltage increase 300 -> 325V.
-1.4kV bias(F350 - B1750 - Others1750), 20uA.
These are consistent with positive ion mode.
**Negative detection mode, Low bias voltage(2.1kV) [#vbaed71f]
&ref(./20110617_03.png,50%);
-2.1kV bias(F550- B2650-Others2650),31uA.
**Negative detection mode, Nominal bias voltage(2.3kV) [#hd9a222e]
&ref(./20110617_05.png,50%);
-2.3kV bias(600 - 2900 - 3050 -3050 - 3100),35uA
**With beta source [#oe3dcd59]
&ref(./20110617_06.png,50%);
-source set nearby the positron window.
-rate w/ source Sr90 1kHz
-rate w/o source 10Hz
**Delay line signal [#df5b55fb]
***z1 [#ffba815e]
&ref(./20110617_07.png,50%);
-pink - MCP(front), green - Delay line.
-terminal 1(z1)
***x1 [#g4984178]
&ref(./20110617_08.png,50%);
-pink - MCP(front), green - Delay line.
-terminal 3(x1)
***y1 [#g4984178]
&ref(./20110617_09.png,50%);
-pink - MCP(front), green - Delay line.
-terminal 5(y1)
*UV [#p7799818]
**100Hz [#xa40a200]
&ref(./20110617_10.png,50%);
-after cut UV ramp, rate back to 5Hz.
-UV on, but light left from the view port -> 5Hz.
**1Hz [#k10b879f]
&ref(./20110617_11.png,50%);
-UV light 1Hz ->count syncronize. 1pulse -> 100~200 signal.
-long time constant? pulse structure changed drastically.
--photoelectron from MCP? because, delay line also saturated.
**after UV off [#xddc2f76]
&ref(./20110617_12.png,50%);
**UV degrade [#p90963f1]
-view port overlayed by pylex glass, in order to reduce UV.
**&size(18){&color(red){KEEP Xenon lamp rep rate < 530Hz.};}; [#te4f77c8]
**20Hz [#kd407d89]
-rate 110count/sec`20Hz -> 5count/pulse
**1Hz [#a0b48b46]
-rate 532counts/60sec 1Hz-^> 9count/pulse
**500Hz [#v4ec268d]
-persist
&ref(./20110617_15.png,50%);&br;
-single
&ref(./20110617_16.png,50%);
-time structure
&ref(./20110617_17.png,50%);
-green delay line, pink MCP
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