From: Ian Bearden (bearden@nbi.dk)
Date: Fri Jan 17 2003 - 10:39:02 EST
On 16. Jan JJG wrote in the shift report: 6. First 16 channels of H1 slat distribution alternate in abnormally in yield. TRIGGER BOARD problem??? EXPERT MUST INVESTIGATE. 7. H2: TDCTOP ch 31 is dead. On 17. Jan, I write: I am starting the ADC calibrations for the TOF detectors, and have seen this problem. In H1, slat 1 is OK, slat 2 has very few counts. This pattern repeats up slat 15 OK, slat 16 very count, and then things look OK. Has anyone looked into this? It dosn't seem to be a problem related to pulse height, as the ADC peak is roughly where it should be (though with far too few counts!). This is a critical problem (assuming we get beam and HPSS at the same time) so please take a look. Thanks, Ian -------------------------------------------------------------------- | I.G. Bearden | | Niels Bohr Institute Tb 3 email: bearden@nbi.dk | | Blegdamsvej 17 phone: (+45) 35 32 53 23 | | København Ø FAX: (+45) 31 42 10 16 | | Danmark Www: http://www.nbi.dk/~bearden | -------------------------------------------------------------------- ------------------------------------------------------------
This archive was generated by hypermail 2.1.5 : Fri Jan 17 2003 - 10:39:16 EST