About 5T05-1 and L/R asimmetry for some top BOXEs

Subject: About 5T05-1 and L/R asimmetry for some top BOXEs
Roberto.Giuliani@lngs.infn.it
Date: Wed Mar 22 2000 - 07:57:06 EST

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
• Next message: Nicola.Zaccheo@lngs.infn.it: "Calibrations runs deleted"
• Previous message: MACRO Scintillator Calibrations: "Laser calibrations"

 Hi all

Checking the data for calibration we discovered a L/R problem for 5T05-1.
So looking for this box we discovered a broken splitter, so actually
5T05-1 was running with one PMT only.

Furthermore we had to change the voltage value for
***5T05-11 the side with broken splitter) ***.

Now the gain is:
  5T05-10 -1720 V (not changed!!)
  5T05-11 -1670 V (fixed/changed resistor splitter, OLD voltage -1690)
  splitter resistor=280 KOHM.

Notes for 5T05-10: PMT Signal has **sligth** instability.

In Addition there are other boxes related with L/R asimmetry:

5T05-1 Debugged/Fixed

6T02-0 Could not be checked because the passerella was broken

6T07-1 Both PMTs OK; gain @4mV

6T11-0 Could not be checked because the passerella was broken

Ciao
Stephane Coutu
Ioannis Katsavounidis
Robero Giuliani

• Next message: Nicola.Zaccheo@lngs.infn.it: "Calibrations runs deleted"
• Previous message: MACRO Scintillator Calibrations: "Laser calibrations"

This archive was generated by hypermail 2a24 : Wed Mar 22 2000 - 07:57:11 EST