HV trip recovery
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Basic Information

  • The trip is signaled by a sounding alarm. The alarm can be silenced using the button on the corresponding alarm panel (where this paper is hanging).

We suggest to use the serial CAEN control according to the following:

Instructions

Connect to the caen1 serial node, then hit return another time. You will get a menu like this (MAIN MENU, if you see a CAEN LOGO like described later hit return again):

C.A.E.N. SY527 V2.16 Crate 01

M A I N  M E N U

Display Display/Modify channels
Protections Set/Reset password
Crate Connect a new crate
Map Crate map
Kill Kill all channels
Alarms Reset alarms
Status Select type of alarm
Format Reformat EEPROM
Upgrade Firmware Upgrade via RS232
Quit Abandon program

 

Select item


Hit C for CRATE:
you will be asked for a crate number. Type the crate number you want to switch on (between 1 and 4, typically you will want to check ALL of them and put the channels back on sequentially, doing one crate at a time). Then hit key D for DISPLAY. You will get the following page, which is showing one 16-channel-board (called page in this menu, board or page numbers start from 0 and HV channel numbers go from 0 to 15):


C.A.E.N. SY527 V2.16 A734

sec_1_inner Ch_En is: On V0-SEL I0-SEL Crate 01 Page 1 *
Channel HVmax Vmon Imon V0set I0set Pw Status Ch#

ILL17 3098 2000.00 0547.00 uA 2000.00 2500.00 uA On 1.00
ILL18 3098 1924.60 0517.00 uA 1925.00 2500.00 uA On 1.01
ILL19 3098 2231.60 0625.00 uA 2232.00 2500.00 uA On 1.02
ILL20 3098 1872.60 0499.00 uA 1873.00 2500.00 uA On 1.03
ILL21 3098 1864.60 0498.00 uA 1865.00 2500.00 uA On 1.04
ILL22 3098 2155.00 0599.00 uA 2155.00 2500.00 uA On 1.05
ILL23 3098 1914.40 0514.00 uA 1915.00 2500.00 uA On 1.06
ILL24 3098 1909.80 0513.00 uA 1910.00 2500.00 uA On 1.07
ILS01 3098 1816.60 0482.00 uA 1817.00 2500.00 uA On 1.08
ILS02 3098 1973.00 0538.00 uA 1973.00 2500.00 uA On 1.09
ILS03 3098 1974.80 0536.00 uA 1975.00 2500.00 uA On 1.10
ILS04 3098 1989.80 0542.00 uA 1990.00 2500.00 uA On 1.11
ILS05 3098 1963.60 0533.00 uA 1964.00 2500.00 uA On 1.12
ILS06 3098 1929.60 0519.00 uA 1930.00 2500.00 uA On 1.13
ILS07 3098 2099.60 0582.00 uA 2100.00 2500.00 uA On 1.14
ILS08 3098 1771.40 0465.00 uA 1772.00 2500.00 uA On 1.15

Quit Change Update Next Prev More Switch V/Isel

Now hit the key S for SWITCH. The page will show a new line at the bottom:

 

C.A.E.N. SY527 V2.16 A734

sec_1_inner Ch_En is: On V0-SEL I0-SEL Crate 01 Page 1 *

Channel HVmax Vmon Imon V0set I0set Pw Status Ch#
ILL17 3098 2000.00 0547.00 uA 2000.00 2500.00 uA Off 1.00
ILL18 3098 1924.60 0517.00 uA 1925.00 2500.00 uA Off 1.01
ILL19 3098 2231.60 0625.00 uA 2232.00 2500.00 uA Off 1.02
ILL20 3098 1872.60 0499.00 uA 1873.00 2500.00 uA Off 1.03
ILL21 3098 1864.60 0498.00 uA 1865.00 2500.00 uA Off 1.04
ILL22 3098 2155.00 0599.00 uA 2155.00 2500.00 uA On 1.05
ILL23 3098 1914.40 0514.00 uA 1915.00 2500.00 uA On 1.06
ILL24 3098 1909.80 0513.00 uA 1910.00 2500.00 uA On 1.07
ILS01 3098 1816.60 0482.00 uA 1817.00 2500.00 uA On 1.08
ILS02 3098 1973.00 0538.00 uA 1973.00 2500.00 uA On 1.09
ILS03 3098 1974.80 0536.00 uA 1975.00 2500.00 uA On 1.10
ILS04 3098 1989.80 0542.00 uA 1990.00 2500.00 uA On 1.11
ILS05 3098 1963.60 0533.00 uA 1964.00 2500.00 uA On 1.12
ILS06 3098 1929.60 0519.00 uA 1930.00 2500.00 uA On 1.13
ILS07 3098 2099.60 0582.00 uA 2100.00 2500.00 uA On 1.14
ILS08 3098 1771.40 0465.00 uA 1772.00 2500.00 uA On 1.15

sec_1_inner XXXX.XX XXXX.XX XXX

Quit Change Update Next Prev More Switch V/Isel


The page could look like this, namely some channels or all channels are off (trip condition). The underlined XXX will be highlighted (make sure that the LAST xxx field is highlighted: this correspond to power switch).

Now simply hit the 1 (one) key on the keyboard (NO RETURN), then hit S again to return to the previous page without the XXX. Now you should see the channels going up and being back on. You can browse the other boards (pages) in the crate hitting P for PREVIOUS and N for NEXT. When you are done and you see all HVs ON you can go back hitting Q (QUIT) and choose another crate with C from the main menu. To exit from the main menu hit Q again. You will see the CAEN logo

Keep control key down and hit "\" (backslash) to return to the LATSRV> prompt.
Now simply type logout and return and you are done.


If the previous procedures don't work or if you suspect another problem that you cannot understand or solve (like groups of dead electronic channels as seen in the monitoring histograms, etc.), try to reach the LAC people through the following list.

Call list:

  • LAC pager number is 849 6125
  • Frascati office (JLAB) 5284
  • Genova office (JLAB) 7266
  • P. Rossi office (Frascati) 39-06-94032549
  • Genova office  39-010-3536336
  •               "        39-010-3536458

e-mails:


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