Testing SHMS Preshower

Status

• The SHMS Calorimeter has been cabled with signal and HV.
• Have checked setting each channel to 1400V that signal is seen.
• Altered voltages within SHMS Calorimeter to match around 50 mV per tube.
• Added external PMT's across top of calorimeter, 6 in total,
• 06/28 Taking data for number of events through calorimeter and external PMT's
• 07/10 Added diagram of Modules and Live connections
• 07/18 Added plots of SHMS Cal. data

Computer Setup

• Computer is called cnu. The account is gep5.

HV Setup

• Can control the CAEN 403 through terminal on cnu.
  • Open terminal
  • type "su" to login as superuser.
  • type "minicom"
• Listing of the HV setting and cable numbering for the preshower and scintillators
• Preshower HV for Neg and for Positive side on July 30th at 4:41

Event Data

• Coincidence data between SHMS Cal and external PMTs Hits per hour
• Diagram of modules used for collecting coincidence data Module Diagram
• Voltage versus PMT# plots for the negative and positive sides of the calorimeter. plot

Data taking Log

Run number	Start Date/Time	Trigger	PreShower Threshold	Scintillator Threshold	End Date/Time	Events	HV figure	Comments
34	July 30th 17:53:19	P1 && P14	20mV	N/A	July 31st 09:29:09	368	Pos HV]	TDC range 1024ns (250ps/ch)
35	July 31st 09:37:27	P1 && P2	20mV	N/A	July 31st 10:29:10	2178	Pos HV]	TDC range 1024ns (250ps/ch)
36	July 31st 14:29:14	P1 && P2	20mV	N/A	July 31st 14:35:00	144	Pos HV]	TDC range 1024ns (250ps/ch power outage ending run)
37	July 31st 14:38:13	P1 && P2	20mV	N/A	July 31st 14:56:13	738	Pos HV]	TDC range 1024ns (250ps/ch)
38	July 31st 15:26:35	P1 && P5	20mV	N/A	July 31st 15:47:02	119	Pos HV]	TDC range 280ns (70ps/ch) power outage ending run
40	July 31st 19:43:43	P1 && P5	20mV	N/A	Aug 1st 10:24:51	6367	Pos HV]	TDC range 280ns (70ps/ch)
41	Aug 1st 10:33:25	P1 && P2	20mV	50mV	Aug 1st 11:04:16	1240	Pos HV Scint HV	TDC range 280ns (70ps/ch) Added scintillators to the TDC with threshold = 50mV
42	Aug 1st 11:07:31	P1 && P2	20mV	50mV	Aug 2nd 9:38:29	55941	Pos HV Scint HV	TDC range 1024ns (250ps/ch)
43	Aug 2nd 9:52:34	P1 && P2	15mV	40mV	Aug 2nd 11:46:39	9183	Pos HV] Scint HV	TDC range 1024ns (250ps/ch)
44	Aug 2nd 11:55:03	P1 && P2	10mV	30mV	Aug 2nd 15:02:54	28155	Pos HV] Scint HV	TDC range 1024ns (250ps/ch)
45	Aug 2nd 15:45:12	P1 && P2	10mV	30mV	Aug 2nd 17:26:06	26089	Updated Pos Preshower HV Scint HV	TDC range 1024ns (250ps/ch) raised HV for bars 1,2,11 & 14
46	Aug 2nd 17:48:46	P1 && P6	10mV	15mV	Aug 3rd 11:09:04	33524	Run 45 Preshower HV Scint HV	TDC range 1024ns (250ps/ch)
47	Aug 3rd 11:10:29	P1 && P14	10mV	15mV	Aug 3rd 14:43:08	1090	Run 45 Preshower HV Scint HV	TDC range 1024ns (250ps/ch)
48	Aug 3rd 14:47:49	P2 && P14	10mV	15mV	Aug 3rd 17:53:55	1243	Run 48 Preshower HV Run 48 Scint HV	TDC range 1024ns (250ps/ch) Raised PSH1 HV, Scint Bot Mid HV
49	Aug 3rd 17:54:51	P2 && P14	10mV	15mV	Aug 6th 10:24:59	25869	Run 49 Preshower HV Run 48 Scint HV	TDC range 1024ns (250ps/ch)
50	Aug 6th 10:33:46	P2 && P14	20mV	15mV	Aug 6th	Aug 7th 09:31:34	Run 49 Preshower HV Run 48 Scint HV	TDC range 1024ns (250ps/ch)