Difference between revisions of "PePPO 03132012"

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-=Accelerator Configuration=
-;Accelerator Settings
-{| border="1"
-| beam energy || 6.8 MeV
-|-
-| Beam type: ||   Electron
-|-
-| I_average:     || 0.3 nA
-|-
-| I_peak:     || 0.05<math> \mu</math> A 0.006 duty factor
-|-
-| pulse width:|| 10 <math>\mu</math>s  (it seems on 200 <math> \mu</math>s is possible?)
-|-
-| Rate:|| 60 Hz
-|-
-| PEPPO Spectrometer:|| 151.3 A
-|-
-|}
-= Set HV to Detectors  =
-{| border="1"  |cellpadding="20" cellspacing="0
-|-
-|                 || Signal channel  || HV dac || HV (V)
-|-
-|   Detectors #1  || A1   || 2.4 || 960
-|-
-|   Detectors #2  || A2   || 3.0 || 1200
-|-
-|}
-[https://positron.jlab.org/wiki/index.php/PEPPo_Annihilation_Counter_Descriptions#Turning_on_HV_PS How to turn HV On]
-=Scope Pictures=
-CH1: Beam Sync
-CH2: A1
-CH3: A2
-{| border="1"  |cellpadding="20" cellspacing="0
-|-
-| Target|| Pictures
-|-
-|     No Target || [[File:1_03132012_AnnhCountScopePic.png| 200 px]] [[File:2_03132012_AnnhCountScopePic.png| 200 px]]
-|-
-|     Chromox Target|| [[File:3_03132012_AnnhCountScopePic.png| 200 px]]  [[File:4_03132012_AnnhCountScopePic.png| 200 px]]
-|}
-= Run Plan=
-;Signal Definitions for Trigger logic
-:SYNC:=60 Hz sync pulse 200 micro seconds long
-:Det1:= Annihilation Counter #1 (HV1)
-:Det2:=Annihilation Counter #2 (HV2)
-Please make the following measurements
-{| border="1"  |cellpadding="20" cellspacing="0
-|-
-| Run#|| run mode|| Run length ||Beam||Target ||Trig Logic||  VME discriminator Threshold (mV)|| HV1 (setting/V) || HV2 (setting/V) || PL (setting/ns)|| PTW (setting/ns)
-|-
-|   2902  || sample  || 5 minutes || e<math>^-</math> ||  Chromox   ||  (Det1 OR Det2) ||                       50         ||   2.4/960       ||     3/1200      ||       ||
-|-
-|   2903  || sample  || 5 minutes ||e<math>^-</math>  ||  Empty   ||    (Det1 OR Det2) ||                       50         ||   2.4/960       ||     3/1200      ||       ||
-|-
-|   2905 || sample  || 10 minutes || e<math>^-</math> || Chromox   ||   Det1 AND Det2||                       50         ||   2.4/960       ||     3/1200      ||        ||
-|-
-|  2904   || sample  || 15 minutes ||e<math>^-</math>  ||  Empty   ||   Det1 AND Det2 ||                       50         ||   2.4/960       ||     3/1200      ||       ||
-|-
-|    2908 || sample  || 30 minutes After Beam Studies end || off  ||  out   ||    (Det1 or Det2) ||                       50         ||   2.4/960       ||     3/1200      ||        ||
-|-
-|    2909 || sample  || 30 minutes After Beam Studies end || off  ||  out   ||    (Det1 AND Det2) ||                       50         ||   2.4/960       ||     3/1200      ||        ||
-|-
-|}

Difference between revisions of "PePPO 03132012"

Revision as of 01:32, 14 March 2012

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