HiSPARC II Detector Installation Manual
Contents
1. The cables in the outside area roof and along the facade should be preferable assembled in secure and stable metal plastic cable gutters the power voltage on the PMTs is 12 Volts and accepts only limited load Avoid short circuits protect the connectors against mechanical forces humidity and prevent sharp cable bends The GPS antenna is mounted on a stable tube or at an antenna anchor in the direct vicinity of the detector station so that the antenna has an as large as possible view on the sky After proper installation 5 satellites at least or more should be observed simultaneously The GPS antenna is mounted on a tube anchor while the antenna has a screw threat under neath that matches a 34 gas fitting or the supplied plastic antenna stand The GPS antenna cable has been preferably mounted in a stable cable gutter also this cable has a length of 30 meters and should not without taking special precautions be modified The cable is symmetric on both ends it has the same connectors while it should not lay hang loose especially not along a mast use cable ties Special precautions should be obeyed with respect to the roof protection against lightning 2 Positioning the detectors and GPS antenna Two different HISPARC detector configurations are supported a two ski box setup Figure 2 1 and a four ski box setup Figure 2 3 The arrangement with two ski boxes is most suitable when th2. it is recommended to step through the list below and to check each item Each detector has a label with the detector station identification number This unique number will also be used in the analysis software and is listed on the status page of the cluster the sta tion belongs to on the HiSPARC website and in the logbook of the detector This number also links to the serial number of the PMT To prevent damage to the PMT during transportation make sure that the detector arrangement in the ski box is such that the PMT is always at the higher end of the ski box same side as where the cable entry in the bottom of the box is located Each detector has passed a full electrical test and has been documented the report is in cluded in the logbook and published at the website of the high school institute a copy is submit ted to the coordinating institute Each detector has been calibrated documentation in the logbook copy at school institute and website and coordinating institute 1 signal cable coax and 1 power cable 5 wires per ski box have been tested and installed the standard maximum length of these cables is 30 meters The cables have number tags at both ends Note that when installing the cables the power cables are asymmetric both ends have a different connector male female The PMT has a male connector and has to be connected to the female connector of the power cable
3. are kept in ski boxes 1 which used under normal conditions meet the requirements for application even under extreme weather conditions The boxes obtain their guaran teed stability by securing them via their standard mounting connections 4 brackets and properly clos ing the boxes hinges and 3 point locking mechanism and lock key lock To ensure that the boxes remain secured on the roof even under extreme weather conditions a robust anchoring method has been developed Figure 1 1 This anchoring method avoids modifications to the roof itself Although the total weight and therefore the load on the roof increases a good spread of the weight ensures that the load increase remains within limits less than 50 kg m 1 i p Figure 1 1 HISPARC detector with two ski boxes Before the ski boxes with their detectors are placed on the roof several electrical tests have to be com pleted The full documentation of the setup has to be made available both on paper and at the local high school institute website This is the responsibility of the students taking part in the construction and installation of the detectors With the help of this documentation the individual measurements from each scintillator photo multiplier tube PMT and readout electronics can be combined This informa tion is essential for the signal analyses and interpretation of the measurements on the cosmic radia tion Before the ski boxes are installed
4. by the school available from do it yourself markets Put the detector back into the box when the attachment links have been assembled Note that the ca ble trays need to reach the ski box as far as possible and that the cables should exceed the minimum required length to the connectors of the PMTs prees VET GAD Baa a KA Figure 4 5 Another detail of the attachment link and attachment grip left The de tector is put back into the box and is supported by plastic foam right The additional cable length is kept alongside the scintillator inside the ski box Figure 4 6 Herewith a simple strain relief for the cables and PMT is obtained The cables are provided with two additional cable ties mounted close to the cable transit they should not be cut short In this way an addi tional strain relief is created Figure 4 6 Make sure that when tightening the attachment links the joggles re main on top of the aluminium beam left The ridges can then easily be bent with a hammer Installation has almost completed right Each detection station possesses two sets of keys One set is guarded by the school blue label the spare keys are collected and stored by the cluster coordinator red label Finally it is extremely important to properly close the lid of the ski box the lid should match at all edges while the key can be turned without applying any force Figure 4 7 Ofcourse no plastic 17 foa
5. should press the box firmly to the aluminium profile The photo shows the clamp lock in unlocked position turn the central part clockwise and secure the position of the lock with the red cut out The second series newer ski boxes are delivered with 4 clamps 4 rubber cover plates 4 plastic cover plates and 8 nuts Figure 4 2 The clamps are inserted from below into the bottom of the ski box chose the holes that are at the largest distance from each other Next the rubber cover plate and plastic cover plate in this order are slid over the clamps Finally the bolds are mounted and press the box firmly to the aluminium profile The remaining openings in the bottom of the ski box are covered with black stickers belong to the contents of the delivery Figure 4 2 Ski boxes of the second series contain 4 clamps 4 rubber cover plates and 4 plastic cover plates The clamps are fixed by twisting nuts 8 pieces on the threats of the clamp The unused holes in the bottom of the ski box are sealed by black plastic stickers For the anchoring of one ski box on the roof following components should be used Figure 4 3 de viating from this anchoring method Is discouraged and at your own risk Figure 4 3 Four concrete sidewalk profiles 01 lay on top of rubber tiles 05 The alu minium beams 02 are pressed to the concrete by attachment links 04 while at the same time fixing the position of the ski box clam
6. HISPARC II Detector Installation Manual Version 1 7 Filipe Freire amp Bob van Eijk April 16 2009 For more information about the HiSPARC project visit http www hisparc nl This user guide the HiSPARC II software and other information can be found at http www hisparc nl drupal Warning The HiSPARC detector with its scintillator light guide and PMT is a fragile device Please take the following precautions to avoid damage Pack the detector carefully during transportation make sure it will not move inside the ski box add additional plastic foam When tilting the ski box make sure the high side at which the PMT and cable entry are located is always on top Support the lower end of the scintillator against sliding When handling the detector outside the ski box make sure the scintillator and light guide are supported at the proper positions to avoid breaking the glue connections Avoid external forces on the PMT and clashes with other objects Temporarily paper tape the cables and connectors to the light guide to avoid tension on the cables and PMT Contents Instructions for the installation of HISPARC detectors 2 Positioning the detectors and GPS antenna 3 On the installation of the ski boxes 4 Placing the ski boxes 5 Available guides manuals and papers Literature 11 14 19 20 1 Instructions for the installation of HISPARC detectors The HiSPARC detectors
7. a S pe ee be vee t 5 me A NS Ne A EN ji Nan ae CEA RN Ts et Pa gt pt x f A 7 3 j oe i mpa za xk p WA gt i gt Figure 3 1 Please pay attention Working on a roof requires keeping a distance of 2 me ters to the edges Optionally place the GPS on a stable tube or use the plastic antenna anchor Do not leave the cable hanging freely off the antenna e Careful Pay attention when handling the bare detector The glue connections scintillator light guide and light guide PMT are fragile and may easily break Unrecoverable damage to the PMT may be the result Figure 3 2 The cable transit is plugged into the hole in the bottom of the ski box in the vicinity of the PMT The bulk of the transit sits inside the ski box only the nut at the bottom of the image above will sit outside the ski box Do not drill holes into the bottom of the ski box except for the one that holds the cable transit Figure 3 2 at the higher end of the box The transit is mounted inside the box so only the nut at the bottom of the image will be on the outside of the ski box Do not place any additional weights inside the ski boxes When transporting the ski box pay close attention whether the box is properly closed three point lock while there is sufficient foam inside the box to prevent the sliding of the scintillator and light guide never leaf the key in the lock of the box it may simply break away when hitt
8. e local station is combined with other stations in the direct neighbourhood cluster centres The total detector surface area of this station amounts to 0 5 0 5 1 0 m In order to minimise the angular depend ence the ski boxes are put in parallel the effective size of the station in two directions will then be 1 m Figure 2 1 The typical distance between the two ski boxes should be about 5 to 6 meters 3 a 6 Meter Figure 2 1 HISPARC configuration with two detectors The total surface of the scintillators amounts to 1 mf The GPS antenna can be installed on a stand plastic anchor at the middle of the axis connecting the two scintillator centres The GPS can be installed at the middle of the axis between the two scintillator centres PE SE IE 3 EE pe Figure 2 2 The GPS antenna is mounted on the plastic anchor To prevent modifications to the roof the anchor is secured by a weight tile The GPS can be positioned at the middle of the axis between the two scintillator centres Figure 2 2 Measure the North South orientation of this axis with a compass and make a sketch A configuration with 4 detectors offers the possibility to determine the direction of a local particle shower Also here the arrangement has an optimised geometric symmetry three detectors form the corner points of an equilateral triangle with sides of 10 m The fourth detector is placed at the centre of gravity of the triangle When all fou
9. en the GPS antenna and the ski boxes and make a sketch in which the North South orientation of the ski boxes is determined by a compass Include the sketch in the logbook and publish this information at the local web pages Figure 3 4 The detector is supported by foam The foam is also used to prevent the detector from moving during transportation the ski box is filled up with additional foam Do not remove the foam before the ski box has reached its final position 4 Placing the ski boxes The ski boxes are fixed via their standard attachments As a result the stress on the attachments will be identical to the stress on a car roof rack Only in this way save mounting can be guaranteed There are two different series of ski boxes of approximately the same size However the way the at tachments are secured differs The first series older ski boxes contain 4 clamps and 4 clamp locks Figure 4 1 Before the clamps are inserted into the clamp locks from below it is advised to remove the detector from the ski box and place it securely on the roof supported by foam Figure 4 1 The first series of ski boxes have been delivered with 4 clamps and 4 clamp locks The clamps are inserted from below into the bottom of the box and slide into the clamp locks The clamp locks are mounted on support rails inside the ski box and are positioned at maximum distance The height at which the clamp locks are mounted is flexible but
10. ing something Keep the detectors horizontally during transportation Figure 3 3 when tilted the PMT always has to sit at the end in the highest position Y gt TA A f gt gt n oe NN a 1 s 3 Na r 7 i K 4 f x Na i R 1 z ai a F P F p gt le ru E 4 kt e r Ga z nS AA a W ra i r S 4 3 5 lt en es mn 5 i a d is s d 2 gt ar Poe lt na i KN ma np Ta e CA al p7 Ki pkb Ng Baza a a aa mea z ES i fsi Hs 3 1 a 7 a z 3 Ue n aa Pa d lr 3 a Ve TAPAT MG ER Ad lt ane r dea EN 3 1 ta a eT a a B A P k K v A Mr 23 Png T 3 Gn s 5 i lt SY Eb A kien 8 x f PRECY f r Hi ae AG J zx o 5 EE Zedd gi s f i s NP 3 dn od 3 tg 4 Pa ao sA x r J wt 2 Pe ek Dor y hek T 4 i y z i 1 i 4 d i gt 1 a 4 b s Pi i i ae ss i n J pa s p E Ki ij e m f gt gt Figure 3 3 Make sure that during transportation the scintillator and light guide are fixed tightly by foam Keep the ski box locked in horizontal position when the box has to be tilted make certain that the PMT always re mains at the highest end of the box Remove the foam Figure 3 4 that was inserted before transportation on top of the scintillator and light guide only then when the detector has arrived at its final position Measure the precise distance betwe
11. m should be left inside the ski box on top of either the scintillator or the light guide Figure 4 7 Ready to measure cosmic particles DISCLAIMER The anchoring method described in this document has been developed on the basis of information provided by the manufacturer of the ski boxes and has been verified by mechanical engineers The method has proven itself over the past years Modification in any way of this method will be your own responsibility and is strongly discouraged 5 Available guides manuals and papers Following HISPARC user guides and installation manuals are available in pdf format Dutch and Eng lish language and can be found at the HiSPARC website http www hisparc nl Detector Construction Manual Version 1 0 Software Installation Manual Version 1 0 Detector Installation Manual Version 1 7 Data Acquisition User Guide Version 2 2 Data Analysis User Guide Version 1 0 In addition a number of articles on selected topics Dutch language only Poisson Statistiek and educational material is also available Koos Kortland Anneke de Leeuw Kosmische Straling 1 20 Literature Ski box Jetbag Apollo 700 2325 x 690 x 400 see for instance http www hapro nl http www jetbag com
12. ps 03 15 e 8 pieces 100 x 15 x 5 cm or 4 pieces 100 x 30 x 5 cm of concrete sidewalk profiles 1 la e 2 aluminium beams 200 x 5 x 2 5 cm stainless steel or aluminium 2 for fixing the position of the clamps 3 e About 8 meters of stainless steel attachment links Bandit width of 34 inch and 8 34 inch tail ends 4 Depending on the roof covering rubber mats or a number of rubber tiles 5 can be used to support the concrete sidewalk profiles The stainless steel attachment links 4 are stringed with an attachment grip upper left corner in Figure 4 4 around the aluminium beam 2 and concrete sidewalk profiles 1 The beam presses the two clamps 3 against the sidewalk profiles The clamps stick out through the bottom of the ski box The clamp locks bolts on the clamps at the inside of the ski box ensure the tight mounting of the box onto the beam The stainless steel toggle bottom left has joggles and ridges upper right with which the attachment link is kept under tension With a hammer the ridges are bent around the attachment link The attachment grip has a build in cutting device with which the attachment link can be cut to length 8 attachment links are mounted for each ski box Figure 4 4 The attachment links are stringed around the aluminium beam and con crete sidewalk profiles The toggle has joggles and ridges with which the attachment link is secured This material has to be purchased
13. r detectors generate a signal 4 triangles can be distinguished triangulation for the determination of the shower direction can be performed 4 times and can be tested on consistency 3 3 2886 75 10 Meter Figure 2 3 HISPARC configuration with four detectors The total surface of the scintillators 2 mf Detectors 1 and 2 are connected to the Master while the Slave unit reads the signals from 3 and 4 The GPS antenna can be mounted on a stand plastic anchor precisely half way the axis connecting the scintillator centres of 3 and 4 The GPS can be installed half way the axis connecting the scintillator centres 3 and 4 If another posi tion is chosen it is necessary to make a detailed sketch of the position of the GPS antenna with re spect to the detectors Also here the orientation of the axis between 3 and 4 towards the North has to be determined with a compass make a sketch The number ordering for the detectors should not be changed Master scintillator 1 and 2 and Slave scintillator 3 and 4 3 On the installation of the ski boxes Please take note of the regulations regarding working on flat roofs i e keep a distance of more than 2 meters from the edge of the roof Sometimes these measures can not be met Figure 3 1 mar ea a SABA AT N Panga Se Se EE WA S is gt gt r a gS ae SD A z n Na J Ses ee pa i hace 178 nne Ja Kr a 2 bad b Ja NG i mi a
Download Pdf Manuals
Related Search