201309 R1ProgressRep - Revision history

Abdehait: /* 9/20/13 */

2013-09-28T15:30:01Z

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2013-09-28T15:22:48Z

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2013-09-28T14:13:57Z

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2013-09-28T14:08:28Z

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2013-09-22T17:35:14Z

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2013-09-20T16:58:27Z

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2013-09-20T16:39:47Z

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2013-09-20T16:35:37Z

2013-09-04T21:13:19Z

@@ Line 37: / Line 37: @@
-#replaced Sector 1 HV_SL1 board 4 due to a broken bus pin
+#replaced Sector 1 HV_SL1 board 4 due to a broken bus pin (Done)
 #continue burning in Sector 5
 #finish taking scope pictures of sense wire output on Sector 5

← Older revision		Revision as of 15:22, 28 September 2013
Line 34:		Line 34:
	The board drags a high current, all the boots were removed and the current is 15 uA for field, 12 uA for guard, and 1 um for sense as the applied voltage on them is 35V, 10V,50V successively.		The board drags a high current, all the boots were removed and the current is 15 uA for field, 12 uA for guard, and 1 um for sense as the applied voltage on them is 35V, 10V,50V successively.

−	The current disappears as all the guard jumpers (GW1P2 and GW2P2)are removed, or removing the field jumper FW13.Resistance is measured between FW13 and GW2P2 and it value is 2.8 Mohm, and the same for between GW1P2 and FW1. Since SL2 in S5 has not an applied voltage, it can be a reference. SL2 HV board (course) has open line resistance between all the jumpers that were measured previously. Also a new SL1 HV board (coarse) resistance measurements show open line for the the same jumpers, so I replaced the board.	+	The current disappears as all the guard jumpers (GW1P2 and GW2P2)are removed, or removing the field jumper FW13. so I replaced the board to check it has an effect.

← Older revision		Revision as of 14:13, 28 September 2013
Line 34:		Line 34:
	The board drags a high current, all the boots were removed and the current is 15 uA for field, 12 uA for guard, and 1 um for sense as the applied voltage on them is 35V, 10V,50V successively.		The board drags a high current, all the boots were removed and the current is 15 uA for field, 12 uA for guard, and 1 um for sense as the applied voltage on them is 35V, 10V,50V successively.

−	The current disappears as all the guard jumpers (GW1P2 and GW2P2)are removed, or removing the field jumper FW13.Resistance is measured between FW13 and GW2P2 and it value is 2.8 Mohm, and the same for between GW1P2 and FW1. Since SL2 in S5 has not an applied voltage, it can be a reference. SL2 HV board (course) has open line resistance between all the jumpers that were measured previously.	+	The current disappears as all the guard jumpers (GW1P2 and GW2P2)are removed, or removing the field jumper FW13.Resistance is measured between FW13 and GW2P2 and it value is 2.8 Mohm, and the same for between GW1P2 and FW1. Since SL2 in S5 has not an applied voltage, it can be a reference. SL2 HV board (course) has open line resistance between all the jumpers that were measured previously. Also a new SL1 HV board (coarse) resistance measurements show open line for the the same jumpers, so I replaced the board.

@@ Line 33: / Line 33: @@
 #discovered current draw beyond 20 uA when Sector 1 HV_SL1 board 7 voltage is raising to 500 volts.  need to debug
 The board drags a high current, all the boots were removed and the current is 15 uA for field, 12 uA for guard, and 1  um for sense as the applied voltage  on them is 35V, 10V,50V successively.
 #replaced Sector 1 HV_SL1 board 4 due to a broken bus pin

@@ Line 32: / Line 32: @@
 #discovered current draw beyond 20 uA when Sector 1 HV_SL1 board 7 voltage is raising to 500 volts.  need to debug
 #replaced Sector 1 HV_SL1 board 4 due to a broken bus pin
 #continue burning in Sector 5

@@ Line 1: / Line 1: @@
 =09/04/13=
@@ Line 28: / Line 27: @@
 |}
 [[CLAS12_R1_Progress_Reports#September_2013]]

← Older revision		Revision as of 21:13, 4 September 2013
Line 1:		Line 1:
		+
		+	=09/04/13=
		+
		+	Replaced 10 clean room filters
		+
		+
		+	Tasks remaining:
		+
		+	#Measure all Field and Sense wire tensions prior to potting
		+	# pot S2 & S3
		+	#install Windows on S2 & S3
		+	#install HVBs & STBs onto S2 & S3
		+	#burn in S2 & S3
		+	#finish Q&A on all chambers
		+
		+
		+
		+	David Coneff is managing two student workers and plans to finish the above remaining tasks before Jan 2014 as a part time worker, their work schedule is given below.
		+
		+
		+	{\|border="1" \| cellpadding="20" cellspacing="0 class="wikitable"
		+	\|-
		+	\|Mon \|\| Tues\|\|Wed \|\|Thurs \|\| Fri \|\| Sat \|\| Sun
		+	\|-
		+	\| 1-5pm \|\| \|\| 1-5pm \|\| \|\| 1-5pm \|\| 11am-5pm \|\|
		+	\|-
		+	\|-
		+	\|}


	[[CLAS12_R1_Progress_Reports#September_2013]]		[[CLAS12_R1_Progress_Reports#September_2013]]