You are here: Hades Wiki>HODO Web>WebHome (30 Jan 2015, JochenMarkert)EditAttach

Hodoscope detectors

Three pieces of Hodoscope detectors for beam position monitoring are available. Two of them are identical with scintillator rod dimensions 100 x 10 x 5 mm, the third one has smaller rods (100 x 6.5 x 6.5 mm). All three detectors show significant light attenuation inside the scintillators and had to be repaired in Optical laboratories of the Charles University in Prague, Czech Republic.

Hodoscope

Hodoscope publication in NIM: Pion_beam-hodoscope.pdf

Photomultipliers datasheet: Photomultiplier_tube_R3478.pdf

Hodoscope drawings

created in SimpleGeo (http://theis.web.cern.ch/theis/simplegeo/)

Hodoscope drawings ppt: Hodoscope_drawings.pptx

Hodoscope drawings pdf: Hodoscope_drawings.pdf

Source file Hodoscope_drawings_source.dat

Material file materials.db

High Voltage for PMTs

How to set HV

HV values on Hodoscope nr.2: HV_for_hodoscope.pdf

VNCs

vncviewer hadesdaq01:1 is main DAQ VNC

vncviewer hadesdaq01:2 is used for HODO/START

Thresholds on PaDiWa Amps

Setting the thresholds on PaDiWa front-end boards Thresholds

TDC calibration of TRB3 TRB3calibration

Look-up table (24. 4. 2014): Lookup_table_start_category.pdf

Attenuation before repair

Attenutaion length before repair was 4 - 7 cm depanding on the rod and method of measurement (cosmic muons, gamma or beta radiation).

Hodoscope nr.3 - measurement with 90Sr radioactive source: Hodoskop3_attenuation.pdf

After repair

Attenuation length after exchange of scintillator rods is cca 24 cm.

Short report about attenuation measurement after repair: after_repair.pdf

Beam results

Pulse amplitudes on protons measured with osciloscope:

Pulse amplitudes

"Heat map" with well focused beam: Beam profile on hodoscope (Y axis):

Heat map Profile

QA over web browser:

open web browser from any machine in GSI network: hades33/mon/

or from outside: http://cerberus.x-matter.uni-frankfurt.de:8888/mon

or from WiFi: http://cerberus.x-matter.uni-frankfurt.de:3060/mon

OR via SOCKS proxy setting:

1. open a ssh connection and activate 'dynamic port forwarding'
ssh -D 1080 USERNAME@lxi001.gsi.de

2. Setup SOCKS proxy in Firefox
Edit->Preferences->Advanced
open tab 'Network'
click on Connection 'Settings...'
activate 'Manual Proxy Configuration'
setup:
SOCKS Host: localhost Port: 1080
(ensure that all other Proxy fields are blank (or 0))

How to analyze the data (may 14 test):

QA was moved to hadestof@lxhadeb06.gsi.de

0.) go to folder /analysis/tof/May14

1.) to find last 20 hld files type:

zsh

ls -ltr /store/**/*.hld(.om[0,20]L+33)

2.) run defall.sh placed in the /makeDST/ folder

3.) use analysis macro from /makeDST_ilse to analyse the files (./analysisDST name_of_the_file_from_step_1 number_of_events)

Beamtime info

August14

exchange of 2 modified Padiwas for lower rods

8->3

1->16

LookUp table and CalParameters for START and HODO: calibpar_notshifted.txt

HODO Web Utilities

Topic attachments
I Attachment Action Size Date Who Comment
HV_for_hodoscope.pdfpdf HV_for_hodoscope.pdf manage 251.1 K 05 May 2014 - 10:43 OndrejSvoboda High Voltage for Hodoscope nr.2
Hodoscope.datdat Hodoscope.dat manage 331.0 K 30 Sep 2014 - 06:49 OndrejSvoboda Hodoscope drawings source file
Hodoscope_drawings.pdfpdf Hodoscope_drawings.pdf manage 1315.0 K 30 Sep 2014 - 06:33 OndrejSvoboda Hodoscope drawings pdf
Hodoscope_drawings.pptxpptx Hodoscope_drawings.pptx manage 3799.5 K 30 Sep 2014 - 06:35 OndrejSvoboda Hodoscope drawings pptx
Hodoskop3_attenuation.pdfpdf Hodoskop3_attenuation.pdf manage 531.4 K 05 May 2014 - 12:23 OndrejSvoboda Attenuation measurement with Hodoscope nr.3 and 90Sr source
Lookup_table_start_cathegory.txttxt Lookup_table_start_cathegory.txt manage 48.6 K 06 May 2014 - 09:24 OndrejSvoboda Look-up table for start cathegory
Photomultiplier_tube_R3478.pdfpdf Photomultiplier_tube_R3478.pdf manage 215.7 K 05 May 2014 - 10:34 OndrejSvoboda Photomultiplier tube from hodoscope
Pion_beam-hodoscope.pdfpdf Pion_beam-hodoscope.pdf manage 440.0 K 05 May 2014 - 10:30 OndrejSvoboda Design and commissioning of the GSI pion beam - hodoscope description
after_repair.pdfpdf after_repair.pdf manage 260.0 K 06 May 2014 - 07:25 OndrejSvoboda 90Sr measurement of hodoscope nr. 2 after repair
calibpar_notshifted.txttxt calibpar_notshifted.txt manage 6.1 K 19 Aug 2014 - 19:33 LukasChlad LookUp plus CalPars (before shift)
hodo_pulse_amplitude.jpgjpg hodo_pulse_amplitude.jpg manage 145.1 K 05 May 2014 - 12:03 OndrejSvoboda Pulse amplitudes from Hodoscope nr.2 stripe 0, protons 2 GeV
hodoscope.jpgjpg hodoscope.jpg manage 283.6 K 06 May 2014 - 06:51 OndrejSvoboda hodoscope layout
hodoscope_heatmap.jpgjpg hodoscope_heatmap.jpg manage 7.0 K 05 May 2014 - 12:31 OndrejSvoboda Hodoscope heatmap with well focused beam
hodoscope_profile.jpgjpg hodoscope_profile.jpg manage 3.3 K 05 May 2014 - 12:37 OndrejSvoboda Beam profile in Y axis seen in Hodoscope
materials.dbdb materials.db manage 3.0 K 30 Sep 2014 - 06:51 OndrejSvoboda Hodoscope drawings material file
Topic revision: r17 - 30 Jan 2015, JochenMarkert
 
This site is powered by FoswikiCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding Hades Wiki? Send feedback