PEM Harness

The PEM harness is the set of 16 RG174 cables which go from the PEM dynode directly to the
ASD Transition boards. There are 4 lines terminated in 50 ohms. There are 48 harnesses (24 wedges per side, East and West). The harness connects to the Plug light box using two AMP connector packages (parts list below), which are connected to the 16 RG174 cables which are terminated with male LEMO's on the end ASD/TB end.


Part's list and costs:
768+76 spares Male LEMO connectors: (FFS.00.250.CTCE, $6.36). We assume a 6 week lead time. Total cost $6.36*844=$5,367.84

The cable from the PMT connectors to the ASD/TB is 19,440 ft (768+76 spares *23 ft) of RG174 which is $0.14/foot; The total value is $2,720. We are recycling all of it and the cable is already in hand.


The AMP connector packages bundle the RG174 cables so they can be connected to the plug light boxes. We note that the 400 50-ohm terminators are not explicitly costed as the parts should be under $1 and the labor to install them is part of the overall assembly. Similarly, the 20 ft of tubing to protect the cables from the harness casing (2 inches/AMP connector) is also under $3 and is not listed explicitly. The parts for a single harness are:

AMP 1-332056-0 Ferrule 1000*$0.20 (Need 768+78 spares. Come in packages of 1000)
AMP 51565-1 Socket 1100*$2.53 (Need 960+96 spares. Come in packages of 100)
AMP 201356-1 Connector 106*$4.02 (Need 96+10 spares. We are recycling 50 that we have in hand)
AMP 204087-1 Housing 106*$23.98 (Need 96+10 spares. Come in packages of 100. We are recycling 6 of the 36 that we have in hand.)
AMP 200867-1 Female Jackscrew Kit 106*$1.72 (Need 96+10 spares. Come in packages of 100. We are recycling 6 of the 14 that we have in hand.)
AMP 200868-1 Male Jackscrew Kit 106*$2.20 (Need 96+10 spares. Come in packages of 100. We are recycling 6 of the 14 that we have in hand.)


Based on previous construction of similar harnesses we estimate this is 4 hrs/harness and 48 harnesses -> 24 days. We assume an additional 2 days/tecnician to setup and fix. With 3 ElecTechF this can take 10 days. The FNAL rate for ElecTechF is $24/hour.


Parts = 14,527 Labor = 5,760 Parts & Labor = 20,287 Recycling = 3,188

The longest lead time is 40 days which is on the 51565-1.